Rui Gu jackygurui

RESP3 specification

Versions history:

1.0, 2 May 2018, Initial draft to get community feedbacks.

Background

The Redis protocol has served us well in the past years, showing that, if carefully designed, a simple human readable protocol is not the bottleneck in the client server communication, and that the simplicity of the design is a major advantage in creating a healthy client libraries ecosystem.

Yet the Redis experience has shown that after about six years from its introduction (when it replaced the initial Redis protocol), the current RESP protocol could be improved, especially in order to make client implementations simpler and to support new features.

Redis FAQ or: what you learn when idling in #redis

First: this here is the unofficial FAQ, only containing things that come up by users in the IRC channel #redis on Freenode. There's also a more official FAQ. This document is also available on my site.

X is weird in my instance. Can you help?

Maybe. To better help please give the following info:

Output of redis-cli INFO
Output of redis-cli CONFIG GET '*'

Install

wget http://blog.s135.com/soft/linux/webbench/webbench-1.5.tar.gz
tar zxvf webbench-1.5.tar.gz
cd webbench-1.5
make && make install

Usage

webbench --help

	# Let's add a few entries in our stream "mystream". Every entry in a stream is like
	# an hash, composed of fields and values, but every entry can have different fields.
	# XADD appends a new entry in a stream, and returns an unique ID which is guaranteed
	# be incrementing.

	# The first part of the ID is the millisecond unixtime during the
	# addition (or the time of the last entry in the stream, if greater than the current time).
	# The second part of an entry is a 64 bit counter for entries added in the same ms.

	127.0.0.1:6379> XADD mystream name pamela nicknake kill-9

	#!/usr/bin/env bash

	VERSION=4.0.1
	SCRIPT=`basename "$0"`
	APPNAME="My App"
	APPICONS="/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/GenericApplicationIcon.icns"
	OSX_VERSION=`sw_vers -productVersion`
	PWD=`pwd`

	function usage {

	_hashCode java/lang/Object.hashCode()I
	_getClass java/lang/Object.getClass()Ljava/lang/Class;
	_clone java/lang/Object.clone()Ljava/lang/Object;
	_dabs java/lang/Math.abs(D)D
	_dsin java/lang/Math.sin(D)D
	_dcos java/lang/Math.cos(D)D
	_dtan java/lang/Math.tan(D)D
	_datan2 java/lang/Math.atan2(DD)D
	_dsqrt java/lang/Math.sqrt(D)D
	_dlog java/lang/Math.log(D)D

	# Optimized for writes, sort on read

	# LVC
	redis.hset("bonds\|1", "bid_price", 96.01)
	redis.hset("bonds\|1", "ask_price", 97.53)
	redis.hset("bonds\|2", "bid_price", 95.50)
	redis.hset("bonds\|2", "ask_price", 98.25)
	redis.sadd("bond_ids", 1)
	redis.sadd("bond_ids", 2)