What’s difference between these redis starting commands

• sudo /etc/init.d/redis-server start
• sudo service redis-server start
• sudo systemctl start redis-server
• sudo redis-server –daemonize yes

Answer

The last one is “nearest to the metal”, it directly starts the Redis server process with no special options, and is “stand-alone”. I would use this type of command when just “messing around” in the Terminal with quick tests and when trying to get an initial configuration tested and running.

The first 3 are all basically wrappers around starting the Redis server process to make it compatible with systemd or other Linux startup systems. They potentially add more layers of management, like:

• reporting to the systemctl logs
• saving the process id so the process can be killed or restarted
• potentially specifying a different config file
• potentially waiting for other services to become available before starting Redis

I would prefer one of the first three for routine, every-day, managed starting up of Redis on a production system.