Introduction to Redis and installation

in the previous 2 articles we had a quick look at the installation of memcached and the combination of PHP. Now I introduce another NoSQL key-value database, Redis, and find out that Redis uses more than memcached and has more powerful features through learning data. Below will be a few articles slowly introduced Redis, so that we have a further understanding of Redis.

Let's start with a brief introduction to Redis

1) Redis is a key-value storage system, the official site Http://redis.io;

2) similar to memcached, but supports data persistence;

3) Support for more value types, in addition to and string, also support hash, lists (linked list), sets (set) and sorted sets (ordered collection) several data types;

4) Redis uses two file formats: full-volume data (RDB) and incremental request (AOF). The full data format is to write the in-memory data to disk for the next read of the file to load. The incremental request file is to serialize the in-memory data into the operation request, which can be used to read the file for replay data.

5) Redis storage is divided into three parts: memory storage, disk storage and log file.

Next is the Redis installation

wget https://codeload.github.com/antirez/redis/tar.gz/2.8.21

MV 2.8.21 redis-2.8.21.tar.gz

Tar zxvf redis-2.8.21.tar.gz

CD redis-2.8.21

Yum install-y gcc epel-release jemalloc-devel

Make if an error occurs, run the following command:

CD deps; Make Hiredis lua jemalloc linenoise; CD.; Make

Make Prefix=/usr/local/redis Install

Mkdir/usr/local/redis/etc

Write the configuration file (you can find it online search)

VIM/USR/LOCAL/REDIS/ETC/REDIS.CONF//Contents are as follows:

########

Daemonize Yes

Pidfile/usr/local/redis/var/redis.pid

Port 6379

Timeout 300

LogLevel Debug

Logfile/usr/local/redis/var/redis.log

Databases 16

Save 900 1

Save 300 10

Save 60 10000

Rdbcompression Yes

Dbfilename Dump.rdb

dir/usr/local/redis/var/

AppendOnly Yes

Appendfilename "Appendonly.aof"

Appendfsync always

############

For the above configuration I will explain the configuration parameters of Redis separately in the next article.

And then you edit the startup script.

Vim/etc/init.d/redis

#########

#!/bin/sh

# Redis init file for starting up the Redis daemon

# Chkconfig:-20 80

# Description:starts and stops the Redis daemon.

# Source function library.

. /etc/rc.d/init.d/functions

Name= "Redis-server"

Basedir= "/usr/local/redis"

exec= "$basedir/bin/$name"

pidfile= "$basedir/var/redis.pid"

redis_config= "$basedir/etc/redis.conf"

[-e/etc/sysconfig/redis] &&. /etc/sysconfig/redis

Lockfile=/var/lock/subsys/redis

Start () {

[-F $REDIS _config] | | Exit 6

[-X $exec] | | Exit 5

Echo-n $ "Starting $name:"

Daemon--user ${redis_user-redis} "$exec $REDIS _config"

Retval=$?

Echo

[$retval-eq 0] && Touch $lockfile

Return $retval

}

Stop () {

Echo-n $ "Stopping $name:"

Killproc-p $pidfile $name

Retval=$?

Echo

[$retval-eq 0] && rm-f $lockfile

Return $retval

}

Restart () {

Stop

Start

}

Reload () {

False

}

Rh_status () {

Status-p $pidfile $name

}

Rh_status_q () {

Rh_status >/dev/null 2>&1

}

Case "$" in

Start

Rh_status_q && Exit 0

$

;;

Stop

;;

Restart

$

;;

Reload

Rh_status_q | | Exit 7

$

;;

Force-reload)

Force_reload

;;

Status

Rh_status

;;

Condrestart|try-restart)

Rh_status_q | | Exit 0

Restart

;;

*)

echo $ "Usage: $ {Start|stop|status|restart|condrestart|try-restart}"

Exit 2

Esac

Exit $?

######################

Finally create the user and join the system service

useradd-s/sbin/nologin Redis

mkdir / usr /local/ Redis / var

777/ usr /local/ redis /

chmod 755/ etc / INIT.D / Redis

Chkconfig --add Redis

Service Redis Start

------Follow-up will continue to describe the data structure and configuration files of Redis----------

This article is from the Linux OPS blog, so be sure to keep this source http://zhumy.blog.51cto.com/11647651/1828878

Introduction to Redis and installation