SSDB - A fast NoSQL database for storing big list of data

SSDB is a high performace key-value(key-string, key-zset, key-hashmap) NoSQL database, an alternative to Redis.

SSDB is stable, production-ready and is widely used by many Internet companies including QIHU 360.

Features

• LevelDB client-server support, written in C/C++
• Designed to store collection data
• Persistent key-value, key-zset, key-map('hashmap') storage
• Redis clients are supported
• Client API supports including C++, PHP, Python, Cpy, Java, nodejs, Ruby, Go
• Persistent queue service
• Replication(master-slave), load balance [see wiki Replication]
• Future Features
  • Distributed

PHP client API example

<?php
require_once('SSDB.php');
$ssdb = new SimpleSSDB('127.0.0.1', 8888);
$resp = $ssdb->set('key', '123');
$resp = $ssdb->get('key');
echo $resp; // output: 123

More...

Documentation

• View online
• Contribute to SSDB documentation project

Compile and Install

$ wget --no-check-certificate https://github.com/ideawu/ssdb/archive/master.zip
$ unzip master
$ cd ssdb-master
$ make
$ #optional, install ssdb in /usr/local/ssdb
$ sudo make install

# start master
$ ./ssdb-server ssdb.conf

# or start as daemon
$ ./ssdb-server -d ssdb.conf

# ssdb command line
$ ./tools/ssdb-cli -p 8888

# stop ssdb-server
$ kill `cat ./var/ssdb.pid`

See Compile and Install wiki

Performance

Typical performance

Total 1000 requests.

writeseq  :    0.546 ms/op      178.7 MB/s
writerand :    0.519 ms/op      188.1 MB/s
readseq   :    0.304 ms/op      321.6 MB/s
readrand  :    0.310 ms/op      315.0 MB/s

SSDB vs Redis

View full SSDB vs Redis benchmark charts...

Concurrency benchmark

========== set ==========
qps: 44251, time: 0.226 s
========== get ==========
qps: 55541, time: 0.180 s
========== del ==========
qps: 46080, time: 0.217 s
========== hset ==========
qps: 42338, time: 0.236 s
========== hget ==========
qps: 55601, time: 0.180 s
========== hdel ==========
qps: 46529, time: 0.215 s
========== zset ==========
qps: 37381, time: 0.268 s
========== zget ==========
qps: 41455, time: 0.241 s
========== zdel ==========
qps: 38792, time: 0.258 s

Run on a 2013 MacBook Pro 13 inch with Retina display.

Architecture

Who's using SSDB?

See Users wiki

Windows executable

Download ssdb-server.exe from here: https://github.com/ideawu/ssdb-bin

Links

• Author's homepage
• Cpy Scripting Language
• Google LevelDB
• Lua ssdb client driver for the ngx_lua
• Yet another ssdb client for Python
• SSDB 中文文档

Changes made to LevelDB

See Changes-Made-to-LevelDB wiki

LICENSE

SSDB is licensed under New BSD License, a very flexible license to use.

Thanks

• 刘建辉 liujianhui@gongchang.com