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Unreleased

Fixed

  • Plugins:
    • OAuth 2.0: properly checking ownership of a token when refreshing it. #2461

0.10.2 - 2017/05/01

Changed

  • The Kong DNS resolver now honors the MAXNS setting (3) when parsing the nameservers specified in resolv.conf. #2290
  • Kong now matches incoming requests via the $request_uri property, instead of $uri, in order to better handle percent-encoded URIS. A more detailed explanation will be included in the below "Fixed" section. #2377
  • Upstream calls do not unconditionally include a trailing / anymore. See the below "Added" section for more details. #2315
  • Admin API:
    • The "active targets" endpoint now only return the most recent nonzero weight Targets, instead of all nonzero weight targets. This is to provide a better picture of the Targets currently in use by the Kong load balancer. #2310

Added

  • 🎆 Plugins can implement a new rewrite handler to execute code in the Nginx rewrite phase. This phase is executed prior to matching a registered Kong API, and prior to any authentication plugin. As such, only global plugins (neither tied to an API or Consumer) will execute this phase. #2354
  • Ability for the client to chose whether the upstream request (Kong <-> upstream) should contain a trailing slash in its URI. Prior to this change, Kong 0.10 would unconditionally append a trailing slash to all upstream requests. The added functionality is described in #2211, and was implemented in #2315.
  • Ability to hide Kong-specific response headers. Two new configuration fields: server_tokens and latency_tokens will respectively toggle whether the Server and X-Kong-*-Latency headers should be sent to downstream clients. #2259
  • New cassandra_schema_consensus_timeout configuration property, to allow for Kong to wait for the schema consensus of your Cassandra cluster during migrations. #2326
  • Serf commands executed by a running Kong node are now logged in the Nginx error logs with a DEBUG level. #2410
  • Ensure the required shared dictionaries are defined in the Nginx configuration. This will prevent custom Nginx templates from potentially resulting in a breaking upgrade for users. #2466
  • Admin API:
    • Target Objects can now be deleted with their ID as well as their name. The endpoint becomes: /upstreams/:name_or_id/targets/:target_or_id. #2304
  • Plugins:
    • 🎆 New Request termination plugin. This plugin allows to temporarily disable an API and return a pre-configured response status and body to your client. Useful for use-cases such as maintenance mode for your upstream services. Thanks to @pauldaustin for the contribution. #2051
    • Logging plugins: The produced logs include two new fields: a consumer field, which contains the properties of the authenticated Consumer (id, custom_id, and username), if any, and a tries field, which includes the upstream connection successes and failures of the load- balancer. #2367 #2429
    • http-log: Now set an upstream HTTP basic access authentication header if the configured conf.http_endpoint parameter includes an authentication section. Thanks @amir for the contribution. #2432
    • file-log: New config.reopen property to close and reopen the log file on every request, in order to effectively rotate the logs. #2348
    • jwt: Returns 401 Unauthorized on invalid claims instead of the previous 403 Forbidden status. #2433
    • key-auth: Allow setting API key header names with an underscore. #2370
    • cors: When config.credentials = true, we do not send an ACAO header with value *. The ACAO header value will be that of the request's Origin: header. #2451

Fixed

  • Upstream connections over TLS now set their Client Hello SNI field. The SNI value is taken from the upstream Host header value, and thus also depends on the preserve_host setting of your API. Thanks @konrade for the original patch. #2225
  • Correctly match APIs with percent-encoded URIs in their uris property. Generally, this change also avoids normalizing (and thus, potentially altering) the request URI when trying to match an API's uris value. Instead of relying on the Nginx $uri variable, we now use $request_uri. #2377
  • Handle a routing edge-case under some conditions with the uris matching rule of APIs that would falsely lead Kong into believing no API was matched for what would actually be a valid request. #2343
  • If no API was configured with a hosts matching rule, then the preserve_host flag would never be honored. #2344
  • CNAME records are now properly being cached by the DNS resolver. This results in a performance improvement over previous 0.10 versions. #2303
  • When using Cassandra, some migrations would not be performed on the same coordinator as the one originally chosen. The same migrations would also require a response from other replicas in a cluster, but were not waiting  for a schema consensus beforehand, causing indeterministic failures in the migrations, especially if the cluster's inter-nodes communication is slow. #2326
  • The cassandra_timeout configuration property is now correctly taken into consideration by Kong. #2326
  • Correctly trigger plugins configured on the anonymous Consumer for anonymous requests (from auth plugins with the new config.anonymous parameter). #2424
  • When multiple auth plugins were configured with the recent config.anonymous parameter for "OR" authentication, such plugins would override each other's results and response headers, causing false negatives. #2222
  • Ensure the cassandra_contact_points property does not contain any port information. Those should be specified in cassandra_port. Thanks @Vermeille for the contribution. #2263
  • Prevent an upstream or legitimate internal error in the load balancing code from throwing a Lua-land error as well. #2327
  • Allow backwards compatibility with custom Nginx configurations that still define the resolver ${{DNS_RESOLVER}} directive. Vales from the Kong dns_resolver property will be flattened to a string and appended to the directive. #2386
  • Plugins:
    • hmac: Better handling of invalid base64-encoded signatures. Previously Kong would return an HTTP 500 error. We now properly return HTTP 403 Forbidden. #2283
  • Admin API:
    • Detect conflicts between SNI Objects in the /snis and /certificates endpoint. #2285
    • The /certificates route used to not return the total and data JSON fields. We now send those fields back instead of a root list of certificate objects. #2463
    • Endpoints with path parameters like /xxx_or_id will now also yield the proper result if the xxx field is formatted as a UUID. Most notably, this fixes a problem for Consumers whose username is a UUID, that could not be found when requesting /consumers/{username_as_uuid}. #2420
    • The "active targets" endpoint does not require a trailing slash anymore. #2307
    • Upstream Objects can now be deleted properly when using Cassandra. #2404

0.10.1 - 2017/03/27

Changed

  • ⚠️ Serf has been downgraded to version 0.7 in our distributions, although versions up to 0.8.1 are still supported. This fixes a problem when automatically detecting the first non-loopback private IP address, which was defaulted to 127.0.0.1 in Kong 0.10.0. Greater versions of Serf can still be used, but the IP address needs to be manually specified in the cluster_advertise configuration property.

  • ⚠️ The CORS Plugin parameter config.origin is now config.origins.

    🔴 Post-release note (as of 2017/05/12): A faulty behavior has been observed with this change. Previously, the plugin would send the * wildcard when config.origin was not specified. With this change, the plugin does not send the * wildcard by default anymore. You will need to specify it manually when configuring the plugin, with config.origins=*. This behavior is to be fixed in a future release. #2203

  • Admin API:

    • Disable support for TLS/1.0. #2212

Added

  • Admin API:
    • Active targets can be pulled with GET /upstreams/{name}/targets/active. #2230
    • Provide a convenience endpoint to disable targets at: DELETE /upstreams/{name}/targets/{target}. Under the hood, this creates a new target with weight = 0 (the correct way of disabling targets, which used to cause confusion). #2256
  • Plugins:
    • cors: Support for configuring multiple Origin domains. #2203

Fixed

  • Use an LRU cache for Lua-land entities caching to avoid exhausting the Lua VM memory in long-running instances. #2246
  • Avoid potential deadlocks upon callback errors in the caching module for database entities. #2197
  • Relax multipart MIME type parsing. A space is allowed in between values of the Content-Type header. #2215
  • Admin API:
    • Better handling of non-supported HTTP methods on endpoints of the Admin API. In some cases this used to throw an internal error. Calling any endpoint with a non-supported HTTP method now always returns 405 Method Not Allowed as expected. #2213
  • CLI:
    • Better error handling when missing Serf executable. #2218
    • Fix a bug in the kong migrations command that would prevent it to run correctly. #2238
    • Trim list values specified in the configuration file. #2206
    • Align the default configuration file's values to the actual, hard-coded default values to avoid confusion. #2254
  • Plugins:
    • hmac: Generate an HMAC secret value if none is provided. #2158
    • oauth2: Don't try to remove credential values from request bodies if the MIME type is multipart, since such attempts would result in an error. #2176
    • ldap: This plugin should not be applied to a single Consumer, however, this was not properly enforced. It is now impossible to apply this plugin to a single Consumer (as per all authentication plugin). #2237
    • aws-lambda: Support for us-west-2 region in schema. #2257

0.10.0 - 2017/03/07

Kong 0.10 is one of most significant releases to this day. It ships with exciting new features that have been heavily requested for the last few months, such as load balancing, Cassandra 3.0 compatibility, Websockets support, internal DNS resolution (A and SRV records without Dnsmasq), and more flexible matching capabilities for APIs routing.

On top of those new features, this release received a particular attention to performance, and brings many improvements and refactors that should make it perform significantly better than any previous version.

Changed

  • ⚠️ API Objects (as configured via the Admin API) do not support the request_host and request_uri fields anymore. The 0.10 migrations should upgrade your current API Objects, but make sure to read the new 0.10 Proxy Guide to learn the new routing capabilities of Kong. On the good side, this means that Kong can now route incoming requests according to a combination of Host headers, URIs, and HTTP methods.
  • ⚠️ Final slashes in upstream_url are no longer allowed. #2115
  • ⚠️ The SSL plugin has been removed and dynamic SSL capabilities have been added to Kong core, and are configurable via new properties on the API entity. See the related PR for a detailed explanation of this change. #1970
  • ⚠️ Drop the Dnsmasq dependency. We now internally resolve both A and SRV DNS records. #1587
  • ⚠️ Dropping support for insecure TLS/1.0 and defaulting Upgrade responses to TLS/1.2. #2119
  • Bump the compatible OpenResty version to 1.11.2.1 and 1.11.2.2. Support for OpenResty 1.11.2.2 requires the --without-luajit-lua52 compilation flag.
  • Separate Admin API and Proxy error logs. Admin API logs are now written to logs/admin_access.log. #1782
  • Auto-generates stronger SHA-256 with RSA encryption SSL certificates. #2117

Added

  • 🎆 Support for Cassandra 3.x. #1709
  • 🎆 SRV records resolution. #1587
  • 🎆 Load balancing. When an A or SRV record resolves to multiple entries, Kong now rotates those upstream targets with a Round-Robin algorithm. This is a first step towards implementing more load balancing algorithms. Another way to specify multiple upstream targets is to use the newly introduced /upstreams and /targets entities of the Admin API. #1587 #1735
  • 🎆 Multiple hosts and paths per API. Kong can now route incoming requests to your services based on a combination of Host headers, URIs and HTTP methods. See the related PR for a detailed explanation of the new properties and capabilities of the new router. #1970
  • 🎆 Maintain upstream connection pools which should greatly improve performance, especially for HTTPS upstream connections. We now use HTTP/1.1 for upstream connections as well as an nginx upstream block with a configurablekeepalive directive, thanks to the new nginx_keepalive configuration property. #1587 #1827
  • 🎆 Websockets support. Kong can now upgrade client connections to use the ws protocol when Upgrade: websocket is present. #1827
  • Use an in-memory caching strategy for database entities in order to reduce CPU load during requests proxying. #1688
  • Provide negative-caching for missed database entities. This should improve performance in some cases. #1914
  • Support for serving the Admin API over SSL. This introduces new properties in the configuration file: admin_listen_ssl, admin_ssl, admin_ssl_cert and admin_ssl_cert_key. #1706
  • Support for upstream connection timeouts. APIs now have 3 new fields: upstream_connect_timeout, upstream_send_timeout, upstream_read_timeout to specify, in milliseconds, a timeout value for requests between Kong and your APIs. #2036
  • Support for clustering key rotation in the underlying Serf process:
    • new cluster_keyring_file property in the configuration file.
    • new kong cluster keys .. CLI commands that expose the underlying serf keys .. commands. #2069
  • Support for lua_socket_pool_size property in configuration file. #2109
  • Plugins:
    • 🎆 New AWS Lambda plugin. Thanks Tim Erickson for his collaboration on this new addition. #1777 #1190
    • Anonymous authentication for auth plugins. When such plugins receive the config.anonymous=<consumer_id> property, even non-authenticated requests will be proxied by Kong, with the traditional Consumer headers set to the designated anonymous consumer, but also with a X-Anonymous-Consumer header. Multiple auth plugins will work in a logical OR fashion. #1666 and #2035
    • request-transformer: Ability to change the HTTP method of the upstream request. #1635
    • jwt: Support for ES256 signatures. #1920
    • rate-limiting: Ability to select the Redis database to use via the new config.redis_database plugin property. #1941

Fixed

  • Looking for Serf in known installation paths. #1997
  • Including port in upstream Host header. #2045
  • Clarify the purpose of the cluster_listen_rpc property in the configuration file. Thanks Jeremy Monin for the patch. #1860
  • Admin API:
    • Properly Return JSON responses (instead of HTML) on HTTP 409 Conflict when adding Plugins. #2014
  • CLI:
    • Avoid double-prefixing migration error messages with the database name (PostgreSQL/Cassandra).
  • Plugins:
    • Fix fault tolerance logic and error reporting in rate-limiting plugins.
    • CORS: Properly return Access-Control-Allow-Credentials: false if Access-Control-Allow-Origin: *. #2104
    • key-auth: enforce key_names to be proper header names according to Nginx. #2142

0.9.9 - 2017/02/02

Fixed

  • Correctly put Cassandra sockets into the Nginx connection pool for later reuse. This greatly improves the performance for rate-limiting and response-ratelimiting plugins. f8f5306
  • Correct length of a year in seconds for rate-limiting and response-ratelimiting plugins. A year was wrongly assumed to only be 360 days long. e4fdb2a
  • Prevent misinterpretation of the % character in proxied URLs encoding. Thanks Thomas Jouannic for the patch. #1998 #2040

0.9.8 - 2017/01/19

Fixed

  • Properly set the admin IP in the Serf script.

Changed

  • Provide negative-caching for missed database entities. This should improve performance in some cases. #1914

Fixed

  • Plugins:
    • Fix fault tolerance logic and error reporting in rate-limiting plugins.

0.9.7 - 2016/12/21

Fixed

  • Fixed a performance issue in Cassandra by removing an old workaround that was forcing Cassandra to use LuaSocket instead of cosockets. #1916
  • Fixed an issue that was causing a recursive attempt to stop Kong's services when an error was occurring. #1877
  • Custom plugins are now properly loaded again. #1910
  • Plugins:
    • Galileo: properly encode empty arrays. #1909
    • OAuth 2: implements a missing Postgres migration for redirect_uri in every OAuth 2 credential. #1911
    • OAuth 2: safely parse the request body even when no data has been sent. #1915

0.9.6 - 2016/11/29

Fixed

  • Resolve support for PostgreSQL SSL connections. #1720
  • Ensure kong start honors the --conf flag is a config file already exists at one of the default locations (/etc/kong.conf, /etc/kong/kong.conf). #1681
  • Obfuscate sensitive properties from the / Admin API route which returns the current node's configuration. #1650

0.9.5 - 2016/11/07

Changed

  • Dropping support for OpenResty 1.9.15.1 in favor of 1.11.2.1 #1797

Fixed

  • Fixed an error (introduced in 0.9.4) in the auto-clustering event

0.9.4 - 2016/11/02

Fixed

  • Fixed the random string generator that was causing some problems, especially in Serf for clustering. #1754
  • Seed random number generator in CLI. #1641
  • Reducing log noise in the Admin API. #1781
  • Fixed the reports lock implementation that was generating a periodic error message. #1783

0.9.3 - 2016/10/07

Added

  • Added support for Serf 0.8. #1693

Fixed

  • Properly invalidate global plugins. #1723

0.9.2 - 2016/09/20

Fixed

  • Correctly report migrations errors. This was caused by an error being thrown from the error handler, and superseding the actual error. [#1605] (Kong#1605)
  • Prevent Kong from silently failing to start. This would be caused by an erroneous error handler. [28f5d10] (https://github.com/Mashape/kong/commit/28f5d10)
  • Only report a random number generator seeding error when it is not already seeded. #1613
  • Reduce intra-cluster noise by not propagating keepalive requests events. #1660
  • Admin API:
    • Obfuscates sensitive configuration settings from the / route. #1650
  • CLI:
    • Prevent a failed kong start to stop an already running Kong node. #1645
    • Remove unset configuration placeholders from the nginx configuration template. This would occur when no Internet connection would be available and would cause Kong to compile an erroneous nginx config. #1606
    • Properly count the number of executed migrations. #1649
  • Plugins:
    • OAuth2: remove the "Kong" mentions in missing provision_key error messages. #1633
    • OAuth2: allow to correctly delete applications when using Cassandra. #1659
    • galileo: provide a default bodySize value when log_bodies=true but the current request/response has no body. #1657

0.9.1 - 2016/09/02

Added

  • Plugins:
    • ACL: allow to retrieve/update/delete an ACL by group name. #1544
    • Basic Authentication: allow to retrieve/update/delete a credential by username. #1570
    • HMAC Authentication: allow to retrieve/update/delete a credential by username. #1570
    • JWT Authentication: allow to retrieve/update/delete a credential by key. #1570
    • Key Authentication: allow to retrieve/update/delete a credential by key. #1570
    • OAuth2 Authentication: allow to retrieve/update/delete a credential by client_id and tokens by access_token. #1570

Fixed

  • Correctly parse configuration file settings containing comments. #1569
  • Prevent third-party Lua modules (and plugins) to override the seed for random number generation. This prevents the creation of conflicting UUIDs. #1558
  • Use pgmoon-mashape 2.0.0 which properly namespaces our fork, avoiding conflicts with other versions of pgmoon, such as the one installed by Lapis. #1582
  • Avoid exposing OpenResty's information on HTTP 4xx errors. #1567
  • ulimit with unlimited value is now properly handled. #1545
  • CLI:
    • Stop third-party services (Dnsmasq/Serf) when Kong could not start. #1588
    • Prefix database migration errors (such as Postgres' connection refused) with the database name (postgres/cassandra) to avoid confusions. #1583
  • Plugins:
    • galileo: Use Content-Length header to get request/response body size when log_bodies is disabled. #1584
  • Admin API:
    • Revert the /plugins/enabled endpoint's response to be a JSON array, and not an Object. #1529

0.9.0 - 2016/08/18

The main focus of this release is Kong's new CLI. With a simpler configuration file, new settings, environment variables support, new commands as well as a new interpreter, the new CLI gives more power and flexibility to Kong users and allow for an easier integration in your deployment workflow, as well as better testing for developers and plugins authors. Additionally, some new plugins and performance improvements are included as well as the regular bug fixes.

Changed

  • ⚠️ PostgreSQL is the new default datastore for Kong. If you were using Cassandra and you are upgrading, you need to explicitly set cassandra as your database.
  • ⚠️ New CLI, with new commands and refined arguments. This new CLI uses the resty-cli interpreter (see lua-resty-cli) instead of LuaJIT. As a result, the resty executable must be available in your $PATH (resty-cli is shipped in the OpenResty bundle) as well as the bin/kong executable. Kong does not rely on Luarocks installing the bin/kong executable anymore. This change of behavior is taken care of if you are using one of the official Kong packages.
  • ⚠️ Kong uses a new configuration file, with an easier syntax than the previous YAML file.
  • New arguments for the CLI, such as verbose, debug and tracing flags. We also avoid requiring the configuration file as an argument to each command as per the previous CLI.
  • Customization of the Nginx configuration can now be taken care of using two different approaches: with a custom Nginx configuration template and using kong start --template <file>, or by using kong compile to generate the Kong Nginx sub-configuration, and include it in a custom Nginx instance.
  • Plugins:
    • Rate Limiting: the continue_on_error property is now called fault_tolerant.
    • Response Rate Limiting: the continue_on_error property is now called fault_tolerant.

Added

  • 🎆 Support for overriding configuration settings with environment variables.
  • 🎆 Support for SSL connections between Kong and PostgreSQL. #1425
  • 🎆 Ability to apply plugins with more granularity: per-consumer, and global plugins are now possible. #1403
  • New kong check command: validates a Kong configuration file.
  • Better version check for third-party dependencies (OpenResty, Serf, Dnsmasq). #1307
  • Ability to configure the validation depth of database SSL certificates from the configuration file. #1420
  • request_host: internationalized url support; utf-8 domain names through punycode support and paths through %-encoding. #1300
  • Implements caching locks when fetching database configuration (APIs, Plugins...) to avoid dog pile effect on cold nodes. #1402
  • Plugins:
    • 🎆 New bot-detection plugin: protect your APIs by detecting and rejecting common bots and crawlers. #1413
    • correlation-id: new "tracker" generator, identifying requests per worker and connection. #1288
    • request/response-transformer: ability to add strings including colon characters. #1353
    • rate-limiting: support for new rate-limiting policies (cluster, local and redis), and for a new limit_by property to force rate-limiting by consumer, credential or ip.
    • response-rate-limiting: support for new rate-limiting policies (cluster, local and redis), and for a new limit_by property to force rate-limiting by consumer, credential or ip.
    • galileo: performance improvements of ALF serialization. ALFs are not discarded when exceeding 20MBs anymore. #1463
    • statsd: new upstream_stream latency metric. #1466
    • datadog: new upstream_stream latency metric and tagging support for each metric. #1473

Removed

  • We now use lua-resty-jit-uuid for UUID generation, which is a pure Lua implementation of RFC 4122. As a result, libuuid is not a dependency of Kong anymore.

Fixed

  • Sensitive configuration settings are not printed to stdout anymore. #1256
  • Fixed bug that caused nodes to remove themselves from the database when they attempted to join the cluster. #1437
  • Plugins:
    • request-size-limiting: use proper constant for MB units while setting the size limit. #1416
    • OAuth2: security and config validation fixes. #1409 #1112
    • request/response-transformer: better validation of fields provided without a value. #1399
    • JWT: handle some edge-cases that could result in HTTP 500 errors. #1362

internal

  • new test suite using resty-cli and removing the need to monkey-patch the ngx global.
  • custom assertions and new helper methods (wait_until()) to gracefully fail in case of timeout.
  • increase atomicity of the testing environment.
  • lighter testing instance, only running 1 worker and not using Dnsmasq by default.

0.8.3 - 2016/06/01

This release includes some bugfixes:

Changed

  • Switched the log level of the "No nodes found in cluster" warning to INFO, that was printed when starting up the first Kong node in a new cluster.
  • Kong now requires OpenResty 1.9.7.5.

Fixed

  • New nodes are now properly registered into the nodes table when running on the same machine. #1281
  • Fixed a failed error parsing on Postgres. #1269
  • Plugins:
    • Response Transformer: Slashes are now encoded properly, and fixed a bug that hang the execution of the plugin. #1257 and #1263
    • JWT: If a value for algorithm is missing, it's now HS256 by default. This problem occurred when migrating from older versions of Kong.
    • OAuth 2.0: Fixed a Postgres problem that was preventing an application from being created, and fixed a check on the redirect_uri field. #1264 and #1267

0.8.2 - 2016/05/25

This release includes bugfixes and minor updates:

Added

  • Support for a simple slash in request_path. #1227
  • Plugins:
    • Response Rate Limiting: it now appends usage headers to the upstream requests in the form of X-Ratelimit-Remaining-{limit_name} and introduces a new config.block_on_first_violation property. #1235

Changed

  • Plugins:
    • Mashape Analytics: The plugin is now called "Galileo", and added support for Galileo v3. #1159

Fixed

  • Postgres now relies on the search_path configured on the database and its default value $user, public. #1196
  • Kong now properly encodes an empty querystring parameter like ?param= when proxying the request. #1210
  • The configuration now checks that cluster.ttl_on_failure is at least 60 seconds. #1199
  • Plugins:
    • Loggly: Fixed an issue that was triggering 400 and 500 errors. #1184
    • JWT: The TYP value in the header is not optional and case-insensitive. #1192
    • Request Transformer: Fixed a bug when transforming request headers. #1202
    • OAuth 2.0: Multiple redirect URIs are now supported. #1112
    • IP Restriction: Fixed that prevented the plugin for working properly when added on an API. #1245
    • CORS: Fixed an issue when config.preflight_continue was enabled. #1240

0.8.1 - 2016/04/27

This release includes some fixes and minor updates:

Added

  • Adds X-Forwarded-Host and X-Forwarded-Prefix to the upstream request headers. #1180
  • Plugins:
    • Datadog: Added two new metrics, unique_users and request_per_user, that log the consumer information. #1179

Fixed

  • Fixed a DAO bug that affected full entity updates. #1163
  • Fixed a bug when setting the authentication provider in Cassandra.
  • Updated the Cassandra driver to v0.5.2.
  • Properly enforcing required fields in PUT requests. #1177
  • Fixed a bug that prevented to retrieve the hostname of the local machine on certain systems. #1178

0.8.0 - 2016/04/18

This release includes support for PostgreSQL as Kong's primary datastore!

Breaking changes

  • Remove support for the long deprecated /consumers/:consumer/keyauth/ and /consumers/:consumer/basicauth/ routes (deprecated in 0.5.0). The new routes (available since 0.5.0 too) use the real name of the plugin: /consumers/:consumer/key-auth and /consumers/:consumer/basic-auth.

Added

  • Support for PostgreSQL 9.4+ as Kong's primary datastore. #331 #1054
  • Configurable Cassandra reading/writing consistency. #1026
  • Admin API: including pending and running timers count in the response to /. #992
  • Plugins
    • New correlation-id plugin: assign unique identifiers to the requests processed by Kong. Courtesy of @opyate. #1094
    • LDAP: add support for LDAP authentication. #1133
    • StatsD: add support for StatsD logging. #1142
    • JWT: add support for RS256 signed tokens thanks to @kdstew! #1053
    • ACL: appends X-Consumer-Groups to the request, so the upstream service can check what groups the consumer belongs to. #1154
    • Galileo (mashape-analytics): increase batch sending timeout to 30s. #1091
  • Added ttl_on_failure option in the cluster configuration, to configure the TTL of failed nodes. #1125

Fixed

  • Introduce a new port option when connecting to your Cassandra cluster instead of using the CQL default (9042). #1139
  • Plugins
    • Request/Response Transformer: add missing migrations for upgrades from <= 0.5.x. #1064
    • OAuth2
      • Error responses comply to RFC 6749. #1017
      • Handle multipart requests. #1067
      • Make access_tokens correctly expire. #1089

internal

  • replace globals with singleton pattern thanks to @mars.
  • fixed resolution mismatches when using deep paths in the path resolver thanks to siddharthkchatterjee

0.7.0 - 2016/02/24

Breaking changes

Due to the NGINX security fixes (CVE-2016-0742, CVE-2016-0746, CVE-2016-0747), OpenResty was bumped to 1.9.7.3 which is not backwards compatible, and thus requires changes to be made to the nginx property of Kong's configuration file. See the 0.7 upgrade path for instructions.

However by upgrading the underlying OpenResty version, source installations do not have to patch the NGINX core and use the old ssl-cert-by-lua branch of ngx_lua anymore. This will make source installations much easier.

Added

  • Support for OpenResty 1.9.7.*. This includes NGINX security fixes (CVE-2016-0742, CVE-2016-0746, CVE-2016-0747). #906
  • Plugins
    • New Runscope plugin: Monitor your APIs from Kong with Runscope. Courtesy of @mansilladev. #924
    • Datadog: New response.size metric. #923
    • Rate-Limiting and Response Rate-Limiting
      • New config.async option to asynchronously increment counters to reduce latency at the cost of slightly reducing the accuracy. #912
      • New config.continue_on_error option to keep proxying requests in case the datastore is unreachable. rate-limiting operations will be disabled until the datastore is responsive again. #953
  • CLI
    • Perform a simple permission check on the NGINX working directory when starting, to prevent errors during execution. #939
  • Send 50x errors with the appropriate format. #927 #970

Fixed

  • Plugins
    • OAuth2
      • Better handling of redirect_uri (prevent the use of fragments and correctly handle querystrings). Courtesy of @PGBI. #930
      • Add PUT support to the /auth2_tokens route. #897
      • Better error message when the access_token is missing. #1003
    • IP restriction: Fix an issue that could arise when restarting Kong. Now Kong does not need to be restarted for the ip-restriction configuration to take effect. #782 #960
    • ACL: Properly invalidating entities when assigning a new ACL group. #996
    • SSL: Replace shelled out openssl calls with native ngx.ssl conversion utilities, which preserve the certificate chain. #968
  • Avoid user warning on start when the user is not root. #964
  • Store Serf logs in NGINX working directory to prevent eventual permission issues. #975
  • Allow plugins configured on a Consumer without being configured on an API to run. #978 #980
  • Fixed an edge-case where Kong nodes would not be registered in the nodes table. #1008

0.6.1 - 2016/02/03

This release contains tiny bug fixes that were especially annoying for complex Cassandra setups and power users of the Admin API!

Added

  • A timeout property for the Cassandra configuration. In ms, this timeout is effective as a connection and a reading timeout. #937

Fixed

  • Correctly set the Cassandra SSL certificate in the Nginx configuration while starting Kong. #921
  • Rename the user Cassandra property to username (Kong looks for username, hence user would fail). #922
  • Allow Cassandra authentication with arbitrary plain text auth providers (such as Instaclustr uses), fixing authentication with them. #937
  • Admin API
    • Fix the /plugins/:id route for PATCH method. #941
  • Plugins
    • HTTP logging: remove the additional \r\n at the end of the logging request body. #926
    • Galileo: catch occasional internal errors happening when a request was cancelled by the client and fix missing shm for the retry policy. #931

0.6.0 - 2016/01/22

Breaking changes

We would recommended to consult the suggested 0.6 upgrade path for this release.

  • Serf is now a Kong dependency. It allows Kong nodes to communicate between each other opening the way to many features and improvements.
  • The configuration file changed. Some properties were renamed, others were moved, and some are new. We would recommended checking out the new default configuration file.
  • Drop the Lua 5.1 dependency which was only used by the CLI. The CLI now runs with LuaJIT, which is consistent with other Kong components (Luarocks and OpenResty) already relying on LuaJIT. Make sure the LuaJIT interpreter is included in your $PATH. #799

Added

One of the biggest new features of this release is the cluster-awareness added to Kong in #729, which deserves its own section:

  • Each Kong node is now aware of belonging to a cluster through Serf. Nodes automatically join the specified cluster according to the configuration file's settings.
  • The datastore cache is not invalidated by expiration time anymore, but following an invalidation strategy between the nodes of a same cluster, leading to improved performance.
  • Admin API
    • Expose a /cache endpoint for retrieving elements stored in the in-memory cache of a node.
    • Expose a /cluster endpoint used to add/remove/list members of the cluster, and also used internally for data propagation.
  • CLI
    • New kong cluster command for cluster management.
    • New kong status command for cluster healthcheck.

Other additions include:

  • New Cassandra driver which makes Kong aware of the Cassandra cluster. Kong is now unaffected if one of your Cassandra nodes goes down as long as a replica is available on another node. Load balancing policies also improve the performance along with many other smaller improvements. #803
  • Admin API
    • A new total field in API responses, that counts the total number of entities in the datastore. #635
  • Configuration
    • Possibility to configure the keyspace replication strategy for Cassandra. It will be taken into account by the migrations when the configured keyspace does not already exist. #350
    • Dnsmasq is now optional. You can specify a custom DNS resolver address that Kong will use when resolving hostnames. This can be configured in kong.yml. #625
  • Plugins
    • New "syslog" plugin: send logs to local system log. #698
    • New "loggly" plugin: send logs to Loggly over UDP. #698
    • New "datadog" plugin: send logs to Datadog server. #758
    • OAuth2
      • Add support for X-Forwarded-Proto header. #650
      • Expose a new /oauth2_tokens endpoint with the possibility to retrieve, update or delete OAuth 2.0 access tokens. #729
    • JWT
      • Support for base64 encoded secrets. #838 #577
      • Support to configure the claim in which the key is given into the token (not iss only anymore). #838
    • Request transformer
      • Support for more transformation options: remove, replace, add, append motivated by #393. See #824
      • Support JSON body transformation. #569
    • Response transformer
      • Support for more transformation options: remove, replace, add, append motivated by #393. See #822

Changed

  • As mentioned in the breaking changes section, a new configuration file format and validation. All properties are now documented and commented out with their default values. This allows for a lighter configuration file and more clarity as to what properties relate to. It also catches configuration mistakes. #633
  • Replace the UUID generator library with a new implementation wrapping lib-uuid, fixing eventual conflicts happening in cases such as described in #659. See #695
  • Admin API
    • Increase the maximum body size to 10MB in order to handle configuration requests with heavy payloads. #700
    • Disable access logs for the /status endpoint.
    • The /status endpoint now includes database statistics, while the previous stats have been moved to a server response field. #635

Fixed

  • Behaviors described in #603 related to the failure of Cassandra nodes thanks to the new driver. #803
  • Latency headers are now properly included in responses sent to the client. #708
  • strip_request_path does not add a trailing slash to the API's upstream_url anymore before proxying. #675
  • Do not URL decode querystring before proxying the request to the upstream service. #749
  • Handle cases when the request would be terminated prior to the Kong execution (that is, before ngx_lua reaches the access_by_lua context) in cases such as the use of a custom nginx module. #594
  • Admin API
    • The PUT method now correctly updates boolean fields (such as strip_request_path). #765
    • The PUT method now correctly resets a plugin configuration. #720
    • PATCH correctly set previously unset fields. #861
    • In the responses, the next link is not being displayed anymore if there are no more entities to be returned. #635
    • Prevent the update of created_at fields. #820
    • Better request_path validation for APIs. "/" is not considered a valid path anymore. #881
  • Plugins
    • Galileo: ensure the mimeType value is always a string in ALFs. #584
    • JWT: allow to update JWT credentials using the PATCH method. It previously used to reply with 405 Method not allowed because the PATCH method was not implemented. #667
    • Rate limiting: fix a warning when many periods are configured. #681
    • Basic Authentication: do not re-hash the password field when updating a credential. #726
    • File log: better permissions for on file creation for file-log plugin. #877
    • OAuth2
      • Implement correct responses when the OAuth2 challenges are refused. #737
      • Handle querystring on /authorize and /token URLs. #687
      • Handle punctuation in scopes on /authorize and /token endpoints. #658

internal

  • Event bus for local and cluster-wide events propagation. Plans for this event bus is to be widely used among Kong in the future.
  • The Kong Public Lua API (Lua helpers integrated in Kong such as DAO and Admin API helpers) is now documented with ldoc format and published on the online documentation.
  • Work has been done to restore the reliability of the CI platforms.
  • Migrations can now execute DML queries (instead of DDL queries only). Handy for migrations implying plugin configuration changes, plugins renamings etc... #770

0.5.4 - 2015/12/03

Fixed

  • Mashape Analytics plugin (renamed Galileo):
    • Improve stability under heavy load. #757
    • base64 encode ALF request/response bodies, enabling proper support for Galileo bodies inspection capabilities. #747
    • Do not include JSON bodies in ALF postData.params field. #766

0.5.3 - 2015/11/16

Fixed

  • Avoids additional URL encoding when proxying to an upstream service. #691
  • Potential timing comparison bug in HMAC plugin. #704

Added

  • The Galileo plugin now supports arbitrary host, port and path values. #721

0.5.2 - 2015/10/21

A few fixes requested by the community!

Fixed

  • Kong properly search the nginx in your $PATH variable.
  • Plugins:
    • OAuth2: can detect that the originating protocol for a request was HTTPS through the X-Forwarded-Proto header and work behind another reverse proxy (load balancer). #650
    • HMAC signature: support for X-Date header to sign the request for usage in browsers (since the Date header is protected). #641

0.5.1 - 2015/10/13

Fixing a few glitches we let out with 0.5.0!

Added

  • Basic Authentication and HMAC Authentication plugins now also send the X-Credential-Username to the upstream server.
  • Admin API now accept JSON when receiving a CORS request. #580
  • Add a WWW-Authenticate header for HTTP 401 responses for basic-auth and key-auth. #588

Changed

  • Protect Kong from POODLE SSL attacks by omitting SSLv3 (CVE-2014-3566). #563
  • Remove support for key-auth key in body. #566

Fixed

  • Plugins
    • HMAC
      • The migration for this plugin is now correctly being run. #611
      • Wrong username doesn't return HTTP 500 anymore, but 403. #602
    • JWT: iss not being found doesn't return HTTP 500 anymore, but 403. #578
    • OAuth2: client credentials flow does not include a refresh token anymore. #562
  • Fix an occasional error when updating a plugin without a config. #571

0.5.0 - 2015/09/25

With new plugins, many improvements and bug fixes, this release comes with breaking changes that will require your attention.

Breaking changes

Several breaking changes are introduced. You will have to slightly change your configuration file and a migration script will take care of updating your database cluster. Please follow the instructions in UPDATE.md for an update without downtime.

  • Many plugins were renamed due to new naming conventions for consistency. #480
  • In the configuration file, the Cassandra hosts property was renamed to contact_points. #513
  • Properties belonging to APIs entities have been renamed for clarity. #513
    • public_dns -> request_host
    • path -> request_path
    • strip_path -> strip_request_path
    • target_url -> upstream_url
  • plugins_configurations have been renamed to plugins, and their value property has been renamed to config to avoid confusions. #513
  • The database schema has been updated to handle the separation of plugins outside of the core repository.
  • The Key authentication and Basic authentication plugins routes have changed:
Old route                             New route
/consumers/:consumer/keyauth       -> /consumers/:consumer/key-auth
/consumers/:consumer/keyauth/:id   -> /consumers/:consumer/key-auth/:id
/consumers/:consumer/basicauth     -> /consumers/:consumer/basic-auth
/consumers/:consumer/basicauth/:id -> /consumers/:consumer/basic-auth/:id

The old routes are still maintained but will be removed in upcoming versions. Consider them deprecated.

  • Admin API
    • The route to retrieve enabled plugins is now under /plugins/enabled.
    • The route to retrieve a plugin's configuration schema is now under /plugins/schema/{plugin name}.

Added

  • Plugins
    • New Response Rate Limiting plugin: Give a usage quota to your users based on a parameter in your response. #247
    • New ACL (Access Control) plugin: Configure authorizations for your Consumers. #225
    • New JWT (JSON Web Token) plugin: Verify and authenticate JWTs. #519
    • New HMAC signature plugin: Verify and authenticate HMAC signed HTTP requests. #549
    • Plugins migrations. Each plugin can now have its own migration scripts if it needs to store data in your cluster. This is a step forward to improve Kong's pluggable architecture. #443
    • Basic Authentication: the password field is now sha1 encrypted. #33
    • Basic Authentication: now supports credentials in the Proxy-Authorization header. #460

Changed

  • Basic Authentication and Key Authentication now require authentication parameters even when the Expect: 100-continue header is being sent. #408
  • Key Auth plugin does not support passing the key in the request payload anymore. #566
  • APIs' names cannot contain characters from the RFC 3986 reserved list. #589

Fixed

  • Resolver
    • Making a request with a querystring will now correctly match an API's path. #496
  • Admin API
    • Data associated to a given API/Consumer will correctly be deleted if related Consumer/API is deleted. #107 #438 #504
    • The /api/{api_name_or_id}/plugins/{plugin_name_or_id} changed to /api/{api_name_or_id}/plugins/{plugin_id} to avoid requesting the wrong plugin if two are configured for one API. #482
    • APIs created without a name but with a request_path will now have a name which defaults to the set request_path. #547
  • Plugins
    • Mashape Analytics: More robust buffer and better error logging. #471
    • Mashape Analytics: Several ALF (API Log Format) serialization fixes. #515
    • Oauth2: A response is now returned on http://kong:8001/consumers/{consumer}/oauth2/{oauth2_id}. #469
    • Oauth2: Saving authenticated_userid on Password Grant. #476
    • Oauth2: Proper handling of the /oauth2/authorize and /oauth2/token endpoints in the OAuth 2.0 Plugin when an API with a path is being consumed using the public_dns instead. #503
    • OAuth2: Properly returning X-Authenticated-UserId in the client_credentials and password flows. #535
    • Response-Transformer: Properly handling JSON responses that have a charset specified in their Content-Type header.

0.4.2 - 2015/08/10

Added

  • Cassandra authentication and SSL encryption. #405
  • preserve_host flag on APIs to preserve the Host header when a request is proxied. #444
  • Added the Resource Owner Password Credentials Grant to the OAuth 2.0 Plugin. #448
  • Auto-generation of default SSL certificate. #453

Changed

  • Remove cassandra.port property in configuration. Ports are specified by having cassandra.hosts addresses using the host:port notation (RFC 3986). #457
  • Default SSL certificate is now auto-generated and stored in the nginx_working_dir.
  • OAuth 2.0 plugin now properly forces HTTPS.

Fixed

  • Better handling of multi-nodes Cassandra clusters. #450
  • mashape-analytics plugin: handling of numerical values in querystrings. #449
  • Path resolver strip_path option wrongfully matching the path property multiple times in the request URI. #442
  • File Log Plugin bug that prevented the file creation in some environments. #461
  • Clean output of the Kong CLI. #235

0.4.1 - 2015/07/23

Fixed

  • Issues with the Mashape Analytics plugin. #425
  • Handle hyphens when executing path routing with strip_path option enabled. #431
  • Adding the Client Credentials OAuth 2.0 flow. #430
  • A bug that prevented "dnsmasq" from being started on some systems, including Debian. f7da790
  • File Log plugin: optimizations by avoiding the buffered I/O layer. 20bb478

0.4.0 - 2015/07/15

Added

  • Implement wildcard subdomains for APIs' public_dns. #381 #297
  • Plugins
    • New OAuth 2.0 plugin. #341 #169
    • New Mashape Analytics plugin. #360 #272
    • New IP whitelisting/blacklisting plugin. #379
    • Ratelimiting: support for multiple limits. #382 #205
    • HTTP logging: support for HTTPS endpoint. #342
    • Logging plugins: new properties for logs timing. #351
    • Key authentication: now auto-generates a key if none is specified. #48
  • Resolver
    • path property now accepts arbitrary depth. #310
  • Admin API
    • Enable CORS by default. #371
    • Expose a new endpoint to get a plugin configuration's schema. #376 #309
    • Expose a new endpoint to retrieve a node's status. 417c137
  • CLI
    • $ kong migrations reset now asks for confirmation. #365

Fixed

  • Plugins
    • Basic authentication not being executed if added to an API with default configuration. 6d732cd
    • SSL plugin configuration parsing. #353
    • SSL plugin doesn't accept a consumer_id anymore, as this wouldn't make sense. #372 #322
    • Authentication plugins now return 401 when missing credentials. #375 #354
  • Admin API
    • Non supported HTTP methods now return 405 instead of 500. 38f1b7f
    • Prevent PATCH requests from overriding a plugin's configuration if partially updated. 9a7388d
  • Handle occasionally missing schema_migrations table. #365 #250

internal

  • DAO:
    • Complete refactor. No more need for hard-coded queries. #346
  • Schemas:
    • New self_check test for schema definitions. 5bfa7ca

0.3.2 - 2015/06/08

Fixed

  • Uppercase Cassandra keyspace bug that prevented Kong to work with kongdb.org
  • Multipart requests not properly parsed in the admin API. #344

0.3.1 - 2015/06/07

Fixed

  • Schema migrations are now automatic, which was missing from previous releases. #303

0.3.0 - 2015/06/04

Added

  • Support for SSL.
  • Plugins
    • New HTTP logging plugin. #226 #251
    • New SSL plugin.
    • New request size limiting plugin. #292
    • Default logging format improvements. #226 #262
    • File logging now logs to a custom file. #202
    • Keyauth plugin now defaults key_names to "apikey".
  • Admin API
    • RESTful routing. Much nicer Admin API routing. Ex: /apis/{name_or_id}/plugins. #98 #257
    • Support PUT method for endpoints such as /apis/, /apis/plugins/, /consumers/
    • Support for application/json and x-www-form-urlencoded Content Types for all PUT, POST and PATCH endpoints by passing a Content-Type header. #236
  • Resolver
    • Support resolving APIs by Path as well as by Header. #192 #282
    • Support for X-Host-Override as an alternative to Host for browsers. #203 #246
  • Auth plugins now send user informations to your upstream services. #228
  • Invalid target_url value are now being caught when creating an API. #149

Fixed

  • Uppercase Cassandra keyspace causing migration failure. #249
  • Guarantee that ratelimiting won't allow requests in case the atomicity of the counter update is not guaranteed. #289

internal

  • Schemas:
    • New property type: array. #277
    • Entities schemas now live in their own files and are starting to be unit tested.
    • Subfields are handled better: (notify required subfields and auto-vivify is subfield has default values).
  • Way faster unit tests. Not resetting the DB anymore between tests.
  • Improved coverage computation (exclude vendor/).
  • Travis now lints kong/.
  • Way faster Travis setup.
  • Added a new HTTP client for in-nginx usage, using the cosocket API.
  • Various refactorings.
  • Fix #196.
  • Disabled ipv6 in resolver.

0.2.1 - 2015/05/12

This is a maintenance release including several bug fixes and usability improvements.

Added

  • Support for local DNS resolution. #194
  • Support for Debian 8 and Ubuntu 15.04.
  • DAO
    • Cassandra version bumped to 2.1.5
    • Support for Cassandra downtime. If Cassandra goes down and is brought back up, Kong will not need to restart anymore, statements will be re-prepared on-the-fly. This is part of an ongoing effort from jbochi/lua-resty-cassandra#47, #146 and #187. Queries effectuated during the downtime will still be lost. #11
    • Leverage reused sockets. If the DAO reuses a socket, it will not re-set their keyspace. This should give a small but appreciable performance improvement. #170
    • Cascade delete plugins configurations when deleting a Consumer or an API associated with it. #107
    • Allow Cassandra hosts listening on different ports than the default. #185
  • CLI
    • Added a notice log when Kong tries to connect to Cassandra to avoid user confusion. #168
    • The CLI now tests if the ports are already being used before starting and warns.
  • Admin API
    • name is now an optional property for APIs. If none is being specified, the name will be the API public_dns. #181
  • Configuration
    • The memory cache size is now configurable. #208

Fixed

  • Resolver
    • More explicit "API not found" message from the resolver if the Host was not found in the system. "Api not foun with Host: %s".
    • If multiple hosts headers are being sent, Kong will test them all to see if one of the API is in the system. #186
  • Admin API: responses now have a new line after the body. #164
  • DAO: keepalive property is now properly passed when Kong calls set_keepalive on Cassandra sockets.
  • Multipart dependency throwing error at startup. #213

internal

  • Separate Migrations from the DAO factory.
  • Update dev config + Makefile rules (run becomes start).
  • Introducing an ngx stub for unit tests and CLI.
  • Switch many PCRE regexes to using patterns.

0.2.0-2 - 2015/04/27

First public release of Kong. This version brings a lot of internal improvements as well as more usability and a few additional plugins.

Added

  • Plugins
    • CORS plugin.
    • Request transformation plugin.
    • NGINX plus monitoring plugin.
  • Configuration
    • New properties: proxy_port and api_admin_port. #142
  • CLI
    • Better info, help and error messages. #118 #124
    • New commands: kong reload, kong quit. #114 Alias of version: kong --version #119
    • kong restart simply starts Kong if not previously running + better pid file handling. #131
  • Package distributions: .rpm, .deb and .pkg for easy installs on most common platforms.

Fixed

  • Admin API: trailing slash is not necessary anymore for core resources such as /apis or /consumers.
  • Leaner default configuration. #156

internal

  • All scripts moved to the CLI as "hidden" commands (kong db, kong config).
  • More tests as always, and they are structured better. The coverage went down mainly because of plugins which will later move to their own repos. We are all eagerly waiting for that!
  • src/ was renamed to kong/ for ease of development
  • All system dependencies versions for package building and travis-ci are now listed in versions.sh
  • DAO doesn't need to :prepare() prior to run queries. Queries can be prepared at runtime. #146

0.1.1beta-2 - 2015/03/30

Fixed

  • Wrong behavior of auto-migration in kong start.

0.1.0beta-3 - 2015/03/25

First public beta. Includes caching and better usability.

Added

  • Required Openresty is now 1.7.10.1.
  • Freshly built CLI, rewritten in Lua
  • kong start using a new DB keyspace will automatically migrate the schema. #68
  • Anonymous error reporting on Proxy and API. #64
  • Configuration
    • Simplified configuration file (unified in kong.yml).
    • In configuration, plugins_installed was renamed to plugins_available. #59
    • Order of plugins_available doesn't matter anymore. #17
    • Better handling of plugins: Kong now detects which plugins are configured and if they are installed on the current machine.
    • bin/kong now defaults on /etc/kong.yml for config and /var/logs/kong for output. #71
  • Proxy: APIs/Consumers caching with expiration for faster authentication.
  • Admin API: Plugins now use plain form parameters for configuration. #70
  • Keep track of already executed migrations. rollback now behaves as expected. #8

Fixed

  • Server header now sends Kong. #57
  • migrations not being executed in order on Linux. This issue wasn't noticed until unit testing the migrations because for now we only have 1 migration file.
  • Admin API: Errors responses are now sent as JSON. #58

internal

  • We now have code linting and coverage.
  • Faker and Migrations instances don't live in the DAO Factory anymore, they are only used in scripts and tests.
  • scripts/config.lua allows environment based configurations. make dev generates a kong.DEVELOPMENT.yml and kong_TEST.yml. Different keyspaces and ports.
  • spec_helpers.lua allows tests to not rely on the Makefile anymore. Integration tests can run 100% from busted.
  • Switch integration testing from [httpbin.org] to [mockbin.com].
  • core plugin was renamed to resolver.

0.0.1alpha-1 - 2015/02/25

First version running with Cassandra.

Added

  • Basic proxying.
  • Built-in authentication plugin (api key, HTTP basic).
  • Built-in ratelimiting plugin.
  • Built-in TCP logging plugin.
  • Configuration API (for consumers, apis, plugins).
  • CLI bin/kong script.
  • Database migrations (using db.lua).