What is Rails ActiveRecord caching?

What is Rails ActiveRecord caching?

Rails ActiveRecord caching is a technique to store database query results in memory, reducing the need for repeated database calls.

How does it improve performance?

It improves performance by minimizing database load and speeding up response times for frequently accessed data.

Can you give me an example of how to implement it?

Sure! You can use methods like Rails.cache.fetch to cache the results of a query. For example: Rails.cache.fetch('user_#{id}') { User.find(id) }.

Are there any downsides to using caching?

Yes, caching can lead to stale data if not managed properly. It's important to implement cache expiration strategies.