simpredis

README

simpredis

Simpredis is a high performance In-Memory Database written by golang.

Features

• RESP(REdis Serialization Protocol) implemented, support interaction with any standard redis-client
• Support string, list, set, hash, bitmap data structure
• Time To Live(TTL), based on timewheel
• Atomic operations for some command, e.g., mset, incr, incrbyfloat.
• Command function as same as redis
• Concurrent execution
• Connection logs

Supported Commands

string	list	set	hash	key	connection
set	lpush	sadd	hget	ttl	ping
setex	lpop	scard	hset	expire	echo
setnx	rpush	smembers	hlen	expireat
getset	rpop	srem	hkeys	persist
get	lindex	sismember	hvals	del
mset	lrange	sinter	hgetall	exists
mget	llen	sinterstore	hmset	rename
msetnx	lset	spop	hmget	renamenx
incr	lpushx	srandmember	hexists	type
incrby	rpushx	sdiff	hdel
incrbyfloat	rpoplpush	sdiffstore	hsetnx
decr	linsert	smove	hincrby
decrby	lrem	sunion	hincrbyfloat
strlen	ltrim	sunionstore
append
setbit
getbit
bitcount
bitop
setrange
getrange

Performance

environment

• OS: Ubuntu 20.04.2 VM, Linux 5.15.0
• CPU: i9-12900K * 8, 3.2 GHz
• RAM: 6GB in VM

benchmark

• redis-benchmark

# simpredis
PING_INLINE: 244498.77 requests per second
PING_BULK: 253164.55 requests per second
SET: 255754.47 requests per second
GET: 255754.47 requests per second
INCR: 255754.47 requests per second
LPUSH: 246305.42 requests per second
RPUSH: 251889.16 requests per second
LPOP: 248756.22 requests per second
RPOP: 248138.95 requests per second
SADD: 254452.92 requests per second
HSET: 243309.00 requests per second
SPOP: 256410.27 requests per second
LPUSH (needed to benchmark LRANGE): 244498.77 requests per second
LRANGE_100 (first 100 elements): 142247.52 requests per second
LRANGE_300 (first 300 elements): 62853.55 requests per second
LRANGE_500 (first 450 elements): 47080.98 requests per second
LRANGE_600 (first 600 elements): 35536.61 requests per second
MSET (10 keys): 229357.80 requests per second

# redis
PING_INLINE: 240963.86 requests per second
PING_BULK: 238663.48 requests per second
SET: 238663.48 requests per second
GET: 263157.91 requests per second
INCR: 244498.77 requests per second
LPUSH: 247524.75 requests per second
RPUSH: 244498.77 requests per second
LPOP: 245098.05 requests per second
RPOP: 236966.83 requests per second
SADD: 243309.00 requests per second
HSET: 244498.77 requests per second
SPOP: 239808.16 requests per second
LPUSH (needed to benchmark LRANGE): 245098.05 requests per second
LRANGE_100 (first 100 elements): 178890.88 requests per second
LRANGE_300 (first 300 elements): 72674.41 requests per second
LRANGE_500 (first 450 elements): 51413.88 requests per second
LRANGE_600 (first 600 elements): 42698.55 requests per second
MSET (10 keys): 267379.66 requests per second

Usage

go build
./simpredis

Server will listen at port 7000. Config can be modified in simpredis.conf.

Interaction with standard redis-cli

$ redis-cli -p 7000
127.0.0.1:7000> set k v
OK
127.0.0.1:7000> get k
"v"
127.0.0.1:7000>