Expire inactive Redis keys that haven't been accessed for over given time, ensuring efficient memory management and improved performance.

Managing-Inactive-Keys-in-Redis.md

Remove Unused Idle Redis Items:

If an item lacks a TTL setting and is not in use, it will persist in the storage indefinitely unless deleted.

Run this command to delete stale items inside redis-cli:

eval "for _,k in ipairs(redis.call('keys', '*')) do if redis.call('object', 'idletime', k) > {SECONDS} then redis.call('expire', k, 1) end end" 0

Note: {SECONDS} adjusts the time that the object is being idle.

The provided Redis command is a Lua script that performs the following actions:

1. redis.call('keys', '*') lists all keys in the Redis database
2. redis.call('object', 'idletime', k) for each key, it checks the idle time.
3. If found unused for a given timeframe, it deletes it from the storage.
4. The end 0 command indicates that the script doesn’t require any additional keys to be passed as arguments.

This script is useful for cleaning up inactive keys in a Redis database. It removes keys that haven’t been accessed for a specified duration, effectively managing memory usage.