Redis-fast-driver

Truly async redis driver designed for maximum performance. Extremely simple, extremely fast.

This node module uses the hiredis async library for connection and parsing written in C by Salvatore Sanfilippo.

All redis commands including PUB/SUB and MONITOR work. This driver has been in use for two years on my production environment under extremely high loads (30k ops/sec per redis per cluster).
This driver is also used in https://github.com/joaojeronimo/node_redis_cluster and in my fork https://github.com/h0x91b/fast-redis-cluster


Installing

``
npm install redis-fast-driver --save
`

Usage

Check example*.js for usage.

`js
var Redis = require('redis-fast-driver');

var r = new Redis({
//host: '/tmp/redis.sock', //unix domain
host: '127.0.0.1', //can be IP or hostname
port: 6379,
maxRetries: 10, //reconnect retries, default -1 (infinity)
auth: '123', //optional password, if needed
db: 5, //optional db selection
autoConnect: true, //will connect after creation
doNotSetClientName: false, //will set connection name (you can see current connections by running CLIENT LIST on the redis server)
doNotRunQuitOnEnd: false, //when you call end(), driver attempts to send QUIT command to redis before actual end
// If a connection failure occurs, this is the time to wait before initiating a reconnect
reconnectTimeout: 1000,
// Amount of time to wait for an initial connection to be successful before trying again
connectTimeout: 5000,
});

//happens only once
r.on('ready', function(){
console.log('redis ready');
});

//happens every time it connects
r.on('connect', function(){
console.log('redis connected');
});

r.on('disconnect', function(){
console.log('redis disconnected');
});

r.on('reconnecting', function(num){
console.log('redis reconnecting with attempt #' + num);
});

r.on('error', function(e){
console.log('redis error', e);
});

// called on an explicit end, or exhausted reconnections
r.on('end', function() {
console.log('redis closed');
});

//rawCall function has 2 arguments,
//1 - an array which contain a redis command
//2 - an optional callback
//Redis command is case insesitive, e.g. you can specify HMGET as HMGET, hmget or HmGeT
//but keys and value are case sensitive, foo, Foo, FoO are not the same...
r.rawCall(['set', 'foo', 'bar'], function(err, resp){
console.log('SET via rawCall command returns err: %s, resp: %s', err, resp);
});

r.rawCall(['ping'], function(e, resp){
console.log('ping', e, resp);
});

// Also has built-in ES6 Promise support (at the cost of a performance hit)
r.rawCallAsync(['ping'])
.then((resp) => {
console.log('ping', resp);
})
.catch((e) => {
console.error(e);
});

//types are decoded exactly as redis returns them
//e.g. GET will return string
r.rawCall(['set', 'number', 123]);
r.rawCall(['get', 'number'], function(err, resp){
//type of "resp" will be "string"
//this is not related to driver this is normal redis behaviour...
console.log('The value: "%s", number key becomes typeof %s', resp, typeof resp);
});

//but the INCR command on the same key will return a number
r.rawCall(['incr', 'number'], function(err, resp){
//type of "resp" will be a "number"
console.log('The value after INCR: "%s", number key becomes typeof %s', resp, typeof resp);
});
//"number" type will also be returned on INCRBY ZSCORE HLEN and on each other redis command which returns a number.

//ZRANGE will return an Array, same as redis.
r.rawCall(['zadd', 'sortedset', 1, 'a', 2, 'b', 3, 'c']);
r.rawCall(['zrange', 'sortedset', 0, -1], function(err, resp){
//type of will be "number"
console.log('JSON encoded value of zrange: %s', JSON.stringify(resp));
});

//SCAN, HSCAN, SSCAN and other SCAN commands will return an Array within Array, like this:
// [ 245, ['key1', 'key2', 'key3'] ]
// first entry (245) - cursor, second entry - Array of keys.
r.rawCall(['hscan', 'hset:1', 0], function(e, resp){
console.log('hscan 0', e, resp);
});

r.rawCall(['hmset', 'hset:1', 'a', 1, 'b', 2, 'c', 3], function(e, resp){
console.log('hmset', e, resp);
});

r.rawCall(['zadd', 'zset:1', 1, 'a', 2, 'b', 3, 'c', 4, 'd'], function(e, resp){
console.log('zset', e, resp);
});

//HMGET and HGETALL also return an Array
r.rawCall(['hgetall', 'hset:1'], function(e, resp){
console.log('HGETALL', e, resp);
});

r.rawCall(['zrange', 'zset:1', 0, -1], function(e, resp){
console.log('ZRANGE', e, resp);
//disconnect
r.end();
});
``

Speed

Works MUCH faster then node-redis, 20-50% faster then ioredis and even faster then the redis-benchmark tool.

Results for my MacBook Pro (Retina, 15-inch, Mid 2014, 2.5 GHz Intel Core i7) via tcp/ip.

Redis benchmark tool with -q flag via tcp/ip on this machine:

PING_INLINE: 85324.23 requests per second
PING_BULK: 85034.02 requests per second
SET: 85034.02 requests per second
GET: 84317.03 requests per second
INCR: 87032.20 requests per second
LPUSH: 85397.09 requests per second
RPUSH: 86505.19 requests per second
LPOP: 85106.38 requests per second
RPOP: 84961.77 requests per second
SADD: 86132.64 requests per second
HSET: 86058.52 requests per second
SPOP: 86430.43 requests per second
LPUSH (needed to benchmark LRANGE): 84817.64 requests per second
LRANGE_100 (first 100 elements): 26441.04 requests per second
LRANGE_300 (first 300 elements): 11273.96 requests per second
LRANGE_500 (first 450 elements): 7881.46 requests per second
LRANGE_600 (first 600 elements): 6071.28 requests per second
MSET (10 keys): 78064.01 requests per second

Mocha test (npm run bench you will need to install npm i matcha before, excluded it because of security alerts) of Redis-fast-driver:

==========================
redis-fast-driver: 2.1.2
CPU: 8
OS: darwin x64
node version: v8.9.4
current commit: 7694b0d
==========================

Concurrency 10000
475,043 op/s » PING
358,870 op/s » SET foo bar
406,564 op/s » GET foo
437,724 op/s » INCR number
185,442 op/s » HGETALL hset:1
181,277 op/s » ZRANGE zset:1 0 5
17,493 op/s » LRANGE list 0 99

Concurrency 1000
368,027 op/s » PING
294,628 op/s » SET foo bar
314,100 op/s » GET foo
345,316 op/s » INCR number
155,711 op/s » HGETALL hset:1
158,416 op/s » ZRANGE zset:1 0 5
16,769 op/s » LRANGE list 0 99

Concurrency 500
364,537 op/s » PING
254,194 op/s » SET foo bar
297,171 op/s » GET foo
310,571 op/s » INCR number
142,677 op/s » HGETALL hset:1
143,808 op/s » ZRANGE zset:1 0 5
16,230 op/s » LRANGE list 0 99

Concurrency 250
343,095 op/s » PING
242,263 op/s » SET foo bar
280,271 op/s » GET foo
293,171 op/s » INCR number
141,413 op/s » HGETALL hset:1
135,673 op/s » ZRANGE zset:1 0 5
15,667 op/s » LRANGE list 0 99

Concurrency 100
293,601 op/s » PING
213,687 op/s » SET foo bar
245,684 op/s » GET foo
254,148 op/s » INCR number
126,322 op/s » HGETALL hset:1
121,123 op/s » ZRANGE zset:1 0 5
15,474 op/s » LRANGE list 0 99

Concurrency 10
157,582 op/s » PING
132,260 op/s » SET foo bar
143,180 op/s » GET foo
145,747 op/s » INCR number
92,034 op/s » HGETALL hset:1
89,295 op/s » ZRANGE zset:1 0 5
14,229 op/s » LRANGE list 0 99

Concurrency 1
26,111 op/s » PING
24,870 op/s » SET foo bar
25,364 op/s » GET foo
25,348 op/s » INCR number
22,255 op/s » HGETALL hset:1
21,989 op/s » ZRANGE zset:1 0 5
10,139 op/s » LRANGE list 0 99

ioredis npm run bench on same machine for comparison

==========================
redis: 3.2.2
CPU: 8
OS: darwin x64
node version: v8.9.4
current commit: 988d8d9
==========================

SET foo bar
87,895 op/s » javascript parser + dropBufferSupport: true
90,263 op/s » javascript parser

LRANGE foo 0 99
37,174 op/s » javascript parser + dropBufferSupport: true
24,955 op/s » javascript parser

Pipelining

Pipelining works out of the box. The driver works using the async API and the async API defaults to pipelining.

You can still use pipelining to guarantee that all transactions will executed in one request:

Example:

`js
// init pipeline mode
r.rawCall(['multi']);
r.rawCall(['echo', 'hello world']);
r.rawCall(['ping']);
r.rawCall(['incr', 'qqq']);
r.rawCall(['set', 'foo', 'bar']);
r.rawCall(['get', 'foo']);
// execute all commands above once
r.rawCall(['exec'], function(e, resp){
console.log('exec resp', resp);
// exec resp [ 'hello world', 'PONG', 1, 'OK', 'bar' ]
});
``

Author

Arseniy Pavlenko h0x91b@gmail.com

Linkedin: https://il.linkedin.com/in/h0x91b

Contributors

* Samuel Reed (https://github.com/strml)
* Adrian Gierakowski (https://github.com/adrian-gierakowski)
* HcgRandon (https://github.com/HcgRandon)

Licence

(The MIT License)

Copyright (c) 2015-2018 Arseniy Pavlenko h0x91b@gmail.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.