Redis
From Wikipedia:Redis:
- Redis is a software project that implements data structure servers. It is open-source, networked, in-memory, and stores keys with optional durability.
Installation
Start/enable redis.service
.
Configuration
The Redis configuration file is well-documented and located at /etc/redis.conf
.
- By default, if no "bind" configuration directive is specified, Redis listens for connections from all the network interfaces. it may be preferred to allow only access on the host instead:
bind 127.0.0.1
- Accept connections on the specified port (default is 6379), specify
port 0
to disable listing on TCP:
port 6379
Listen on socket
Using Redis over a Unix socket may give a performance increase, compared to TCP/IP [1].
The following changes should be made in /etc/redis.conf
to enable use of the unix socket:
- Enable and update the Redis socket path:
unixsocket /var/run/redis/redis.sock
- Set permission to the socket to all members of the redis group:
unixsocketperm 770
- Create the directory which contains the socket:
# mkdir /var/run/redis # chown redis:redis /var/run/redis # chmod 755 /var/run/redis
- Persist the directory which contains the socket:
/etc/tmpfiles.d/redis.conf
d /var/run/redis 0755 redis redis -
- Add users (e.g. git, http) to the redis group so they can access and use the socket.
Finally restart the redis.service
.