Octopus project

in-memory storage framework

Key features

• extensible
• fast
• easy persistance
• log streaming replication
• hot standby
• simple binary protocol
• memcached protocol emulation
• extensibility

Branches

Octopus (ab)uses git branches in a specific way: the core of framework on the "master" branch, modules are on "mod_box" and "mod_memcached" branches.

Silverbox: Yet another in-memory key-value database

Silverbox is a bit more than a typical key-value database, instead of storing just key-value pairs, it stores a whole tuple. That is, you can have many different keys per values like (key1, key2, value). You can have many values per key also.

Silverbox protocol description can be found at doc/silverbox-protocol.txt

If protocol isn't flexible enough to suite your needs, you can implement stored procedure in Lua and OCaml. Unforutantely, there is no much documentation on that at the moment. Though, you can use mod/box/src-lua/box/example_proc.lua as a starting point. OCaml interface documentation can be found at mod/box/src-ml/box1.mli

How to run Octopus/Silverbox:

Compile (note GNU make and GNU Objective-C compiler are required)

make

note: on MacOSX

CC='gcc -m32' ./configure
make CORO_IMPL=SJLJ

Customize config

cp cfg/octopus_box.cfg custom.cfg
emacs custom.cfg

Initialize storage

./octopus --config custom.cfg --init-storage

Run

./octopus --config custom.cfg