What are the best expiration strategies for Redis in Django?

What are the best expiration strategies for Redis in Django?

In Django, you can use several expiration strategies with Redis, such as time-to-live (TTL) and sliding expiration. TTL sets a fixed expiration time, while sliding expiration resets the timer on each access.

Can you explain how to implement TTL in Django with Redis?

To implement TTL, you can set the timeout parameter when caching a value. For example: cache.set('my_key', 'my_value', timeout=300) will expire the key after 5 minutes.

What about sliding expiration? How does that work?

Sliding expiration means that the expiration time is reset every time the cached item is accessed. You can implement this by manually updating the timeout each time you retrieve the item.

Are there any performance considerations I should be aware of?

Yes, using expiration strategies can impact performance. TTL can lead to cache misses if items expire too soon, while sliding expiration can increase the load on your cache if items are frequently accessed.