hahahashen / pikiwidb

a high-performance, large-capacity, multi-tenant, data-persistent, strong data consistency based on raft, Redis-compatible elastic KV data storage system based on RocksDB

PikiwiDB

中文

A C++20 implementation of Redis Server, use RocksDB for persist storage.(not including cluster yet)

Requirements

• C++20
• Linux or OS X or FreeBSD

compile

It is recommended to use the latest version of Ubuntu or Debian for Linux systems

Execute compilation

If the machine's GCC version is less than 11, especially on CentOS6 or CentOS7, you need to upgrade the gcc version firstly.

Execute the following commands on CentOS:

sudo yum -y install centos-release-scl
sudo yum -y install devtoolset-11-gcc devtoolset-11-gcc-c++
scl enable devtoolset-11 bash

Execute this command to start compiling Pikiwidb:

./etc/script/build.sh 

Pikiwidb is compiled by default in release mode, which does not support debugging. If debugging is needed, compile in debug mode.

./etc/script/build.sh --clear
./etc/script/build.sh --debug

run

bin/pikiwidb etc/conf/pikiwidb.conf

Support module for write your own extensions

PikiwiDB supports module now, still in progress, much work to do. I added three commands(ldel, skeys, hgets) for demonstration.

Persistence: Not limited to memory

RocksDB can be configured as backend for PikiwiDB.

Fully compatible with redis

You can test PikiwiDB with redis-cli, redis-benchmark, or use redis as master with PikiwiDB as slave or conversely, it also can work with redis sentinel.

High Performance

• PikiwiDB is approximately 20-25% faster than redis if run benchmark with pipeline requests(set -P = 50 or higher).
• Average 80K requests per seconds for write, and 90K requests per seconds for read.
• Before run test, please ensure that std::list::size() is O(1), obey the C++11 standards.

Run this command, compare with redis use pipeline commands, try it.

./redis-benchmark -q -n 1000000 -P 50 -c 50

Command List

show all supported commands list

• cmdlist

key commands

• type exists del expire pexpire expireat pexpireat ttl pttl persist move keys randomkey rename renamenx scan sort

server commands

• select dbsize bgsave save lastsave flushdb flushall client debug shutdown bgrewriteaof ping echo info monitor auth

string commands

• set get getrange setrange getset append bitcount bitop getbit setbit incr incrby incrbyfloat decr decrby mget mset msetnx setnx setex psetex strlen

list commands

• lpush rpush lpushx rpushx lpop rpop lindex llen lset ltrim lrange linsert lrem rpoplpush blpop brpop brpoplpush

hash commands

• hget hmget hgetall hset hsetnx hmset hlen hexists hkeys hvals hdel hincrby hincrbyfloat hscan hstrlen

set commands

• sadd scard srem sismember smembers sdiff sdiffstore sinter sinterstore sunion sunionstore smove spop srandmember sscan

sorted set commands

• zadd zcard zrank zrevrank zrem zincrby zscore zrange zrevrange zrangebyscore zrevrangebyscore zremrangebyrank zremrangebyscore zpopmin zpopmax zunionstore zinterstore

pubsub commands

• subscribe unsubscribe publish psubscribe punsubscribe pubsub

multi commands

• watch unwatch multi exec discard

replication commands

• sync slaveof

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