What is read-through caching and how does it work?

What is read-through caching and how does it work?

Read-through caching is a caching strategy where the cache is populated on a read request. When data is requested, the cache checks if the data is available. If not, it retrieves the data from the underlying data source, stores it in the cache, and then returns it to the user.

What are the benefits of using read-through caching?

The benefits include reduced latency for data retrieval, decreased load on the database, and improved application performance by serving frequently accessed data from the cache.

Can you give an example of where read-through caching is used?

Sure! It's commonly used in web applications where user profiles are frequently accessed. By caching user data, the application can quickly serve profile information without querying the database each time.

Are there any downsides to using read-through caching?

Yes, potential downsides include cache staleness if the underlying data changes and the overhead of managing the cache, which can add complexity to the system.