What are some effective caching strategies using Node.js and Redis?

What are some effective caching strategies using Node.js and Redis?

There are several effective caching strategies you can use with Node.js and Redis, such as in-memory caching, data expiration, and cache invalidation.

Can you explain in-memory caching and how it works?

In-memory caching stores frequently accessed data in RAM, allowing for faster retrieval. Redis acts as an in-memory data store, which significantly speeds up data access.

What about data expiration? How can I implement that?

Data expiration in Redis can be implemented using the EXPIRE command, which sets a time-to-live for keys, automatically removing them after a specified duration.

How do I handle cache invalidation when data changes?

Cache invalidation can be handled by updating or deleting the cache entry whenever the underlying data changes, ensuring that stale data is not served.