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7.5K Stars 1.4K Forks BSD 3-Clause "New" or "Revised" License 1.2K Commits 377 Opened issues


SSDB - A fast NoSQL database, an alternative to Redis

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SSDB - A Redis compatible NoSQL database stored on disk

Author Platform NoSQL License

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.


  • LevelDB client-server support, written in C/C++
  • Designed to store collection data
  • Persistent key-value, key-zset, key-map('hashmap'), key-list storage
  • Redis clients are supported
  • Client API supports including C++, PHP, Python, Cpy, Java, nodejs, Ruby, Go(see all)
  • Persistent queue service
  • Replication(master-slave), load balance
  • GUI administration tool(phpssdbadmin)
  • Built-in CLI nagios self-checks

PHP client API example

set('key', '123');
$resp = $ssdb->get('key');
echo $resp; // output: 123


Who's using SSDB?

SSDB users...


Compile and Install

$ wget --no-check-certificate
$ 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

$ ./ssdb-server ssdb.conf -s stop

for older version

$ kill cat ./var/

See Compile and Install wiki


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

Benchmark 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.


ssdb architecture

Windows executable

Download ssdb-server.exe from here:

SSDB library for iOS

make ios
# ls ios/
include/ libleveldb-ios.a libsnappy-ios.a libssdb-ios.a libutil-ios.a

Drag the static libraies files into your iOS project. Then add

to your iOS project's Header Search Paths, which is set in Build Settings.


Changes made to LevelDB

See Changes-Made-to-LevelDB wiki


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


@ideawu([email protected])


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