update links

README.md

@@ -16,7 +16,7 @@ See also: [System Design Primer](https://github.com/donnemartin/system-design-pr
 | Protocol Buffer   | [Protobuf](https://github.com/google/protobuf)    | [Cap'n Proto](https://capnproto.org/), [Thrift](https://github.com/apache/thrift), [Avro](https://github.com/apache/avro), [Amazon Ion](https://amzn.github.io/ion-docs/)    |
 | Stubby | [gRPC](https://github.com/grpc/grpc) | Bolt, [Thrift](https://github.com/apache/thrift) |
 | Chubby            |      | [Apache Zookeeper](https://github.com/apache/zookeeper), [etcd](https://github.com/coreos/etcd), [HashiCorp Consul](https://github.com/hashicorp/consul)      |
-| ? | | [Apache Kafka](https://github.com/apache/kafka), [Apache Pulsar](https://github.com/apache/incubator-pulsar, [Facebook LogDevice](https://github.com/facebookincubator/LogDevice) |
+| ? | | [Apache Kafka](https://github.com/apache/kafka), [Apache Pulsar](https://github.com/apache/incubator-pulsar), [Facebook LogDevice](https://github.com/facebookincubator/LogDevice) |
 
 
 ### Infrastructure
@@ -54,7 +54,7 @@ See also: [System Design Primer](https://github.com/donnemartin/system-design-pr
 | Google Internal  | Google External | Real-World    |
 | -------------|------------ |-------------|
 | Assimilator  |             | [Dominator](https://github.com/Symantec/Dominator) |
-| Blaze        |  [Bazel](http://bazel.io)          | [Buck](https://buckbuild.com/), [Pants](https://www.pantsbuild.org/), [please.build](https://please.build/) |
+| Blaze        |  [Bazel](https://bazel.build)          | [Buck](https://buckbuild.com/), [Pants](https://www.pantsbuild.org/), [please.build](https://please.build/) |
 | Oncall       |             | [PagerDuty](https://pagerduty.com), [OpsGenie](https://www.opsgenie.com/), [VictorOps](https://victorops.com/) |
 | varz/borgmon | | [Datadog](https://www.datadoghq.com/), [Prometheus](https://prometheus.io), [librato](https://www.librato.com), [newrelic](http://newrelic.com), skylight, scout, [Scotty](https://github.com/Symantec/scotty)/[tricorder](https://github.com/Symantec/tricorder), also [this](https://vimeo.com/173610242) and [this](https://prometheus.io/docs/introduction/comparison/) |
 | Exception/Error Tracking (??) | | Sentry.io, Raygun.io, [Rollbar](https://rollbar.com), Honeybadger, Airbrake, OverOps |
@@ -65,8 +65,8 @@ See also: [System Design Primer](https://github.com/donnemartin/system-design-pr
 | logging |[StackDriver](https://cloud.google.com/stackdriver/)| logstash, fluentd, papertrail, [cernan](https://github.com/postmates/cernan) |
 | CodeSearch   | [Zoekt](https://github.com/google/zoekt) | [Sourcegraph](https://sourcegraph.com), [OpenGrok](https://github.com/OpenGrok/OpenGrok/) |
 | Gerrit, Mondrian etc. | [Gerrit](https://www.gerritcodereview.com/) | [Reviewable](https://reviewable.io) |
-| cider |  | [Eclipse Che](https://www.eclipse.org/che/), Cloud9, [gitpod.io](https://gitpod.io) |
-| buganizer | | JIRA, bugzilla, github issues |
+| cider |  | [Eclipse Che](https://www.eclipse.org/che/), [Cloud9](https://c9.io/), [gitpod.io](https://gitpod.io) |
+| buganizer | | [JIRA](https://www.atlassian.com/software/jira), [bugzilla](https://www.bugzilla.org/), github issues |
 | ToTT | [Google Test Blog](https://testing.googleblog.com/) | |
 
 ### Security