$ sudo apt-get install software-properties-common
$ sudo add-apt-repository ppa:openjdk-r/ppa
$ update-alternatives --set java /usr/java/jdk1.8.0_60/bin/java
# update-alternatives --all
$ sudo gpg --keyserver pgp.mit.ed...
기본 레포지토리의 sudo apt-get install redis-server 로는 2.2.12 까지밖에 버전이 안 올라가 있음
dev@server:~$ redis-cli info | grep redis_version
redis_version:2.2.12
dev@server:~$ sudo add-apt-repository ppa:rwky/redis
...
dev@server:~$ sudo apt-get update
...
dev@server...
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