Redis-Leveldb

Introduction

!!! Notice !!!: This project is looking for a new maintainer, if you are interested, please fix some known issues then contact me, I will transfer the project to you. Thank you.

Redis-LevelDB is a redis-protocol compatible frontend to google’s leveldb: Use leveldb as a Redis-Server.

Current Version: 1.6

Redis COMMAND Supported

key-value commands:

• incr/incrby
• get/set
• mget/mset

hash commands(New):

• hget
• hset
• hsetnx
• hdel
• hexists
• hgetall
• hkeys
• hvals
• hlen

set commands(New):

• sadd
• srem
• scard
• smembers
• sismemeber

transaction commands:

• multi
• exec
• discard

connection commans:

• select: select db (when redis-leveldb run in multi-db mode, with argument -M <num>)

server commands:

• keys
• info: Different to redis, this info command accepts a flag argument, eg info, info k, info t, info kt
  • default: show leveldb.stat info
  • k: show the count of all keys
  • t: show leveldb.sstables info

Dependencies

• libev(>=1.4): install with apt-get or port please.
• gmp(http://gmplib.org/): install with apt-get or port please.
• libsnappy
• leveldb:
  • git clone git://github.com/KDr2/redis-leveldb.git
  • cd redis-leveldb
  • git submodule init
  • git submodule update

Compile

[LIBEV=LIBEV_PREFIX GMP=GMP_PREFIX DEBUG=1] make

Run

./redis-leveldb -h

options:

• -d: run redis-level as a daemon process
• -H <host-ip>: host addr to listen on(eg: 127.0.0.1)
• -P <port>: port to listen on(default 8323)
• -D <data-dir>: leveldb data dir(default “redis.db” under your work directory)
• -M <number>: run in multi-db mode and set its db count to <number>, each db in the server is a separatly leveldb database and its data directory is a directory named db-<num> under the directory you specified with the option -D; you can use command select to switch db on the client side while redis-leveldb is running in this mode.

Test Suite

• dependencies: perl5(>=v5.10) with Redis.pm
• run test: make test

Known Issues

• issue 13: signle data package size limitation.