redis

More modern form of memcached. Said to be superior as of v3 due to clustering support. Also available via Amazon Elasticache.  Find the latest version at http://redis.io/download

Update the system, fix the timezone, and install the toolchain

yum -y update
ln -sf /usr/share/zoneinfo/Australia/Brisbane /etc/localtime
yum -y install gcc make

Download the latest redis (available from http://redis.io/download) & untar

cd /usr/local/src
wget http://download.redis.io/releases/redis-2.8.19.tar.gz
tar xzf redis-2.8.19.tar.gz
rm -f redis-2.8.19.tar.gz

Build redis

cd redis-2.8.19
make distclean
make

Make dirs & copy files over

mkdir -p /etc/redis /var/lib/redis /var/redis/6379
cp src/redis-server src/redis-cli /usr/local/bin
cp redis.conf /etc/redis/6379.conf

Configure redis

nano /etc/redis/6379.conf

daemonize yes

bind 127.0.0.1

logfile "/var/log/redis_6379.log"

dir /var/redis/6379

Download and install the init script

wget https://raw.githubusercontent.com/saxenap/install-redis-amazon-linux-centos/master/redis-server
mv redis-server /etc/init.d
chmod 755 /etc/init.d/redis-server
nano /etc/init.d/redis-server

REDIS_CONF_FILE=”/etc/redis/6379.conf

Auto-enable & start redis

chkconfig --add redis-server
chkconfig --level 345 redis-server on
service redis-server start

Fix low-memory issue to prevent failing background saves

nano /etc/sysctl.conf

# prevent redis background save issue
vm.overcommit_memory = 1

sysctl vm.overcommit_memory=1

Test install

/usr/local/bin/redis-cli ping

cat /var/log/redis_6379.log