How to set expiration for key

local redis = (require 'redis').connect('127.0.0.1', 6379)
redis:set('key', 'test')
redis:expire('key', 30)

require 'redis' - load lib:Redis module for Lua
connect - connect to Redis server
'127.0.0.1', 6379 - Redis host and port to connect to
:set - sets specified key value
:expire - set expiration (in seconds) for the specified key
'key' - key name to set expiration for
30 - our key will expire in 30 seconds

group: expire

Example:

local redis = (require 'redis').connect('127.0.0.1', 6379)
redis:set('key', 'test')
redis:expire('key', 30)
print(redis:ttl('key'))

link_youtube: https://youtu.be/rLTNxZ-KAmM