What are the best practices for frontend caching?

What are the best practices for frontend caching?

Frontend caching is crucial for improving performance. Key practices include using cache-control headers, leveraging service workers, and implementing proper cache invalidation strategies.

Can you explain how cache-control headers work?

Cache-control headers dictate how, and for how long, browsers and other caches should store your resources. For example, 'max-age' specifies the maximum amount of time a resource is considered fresh.

What is a service worker and how does it help with caching?

A service worker is a script that runs in the background, separate from a web page. It can intercept network requests and serve cached responses, enabling offline capabilities and faster load times.

How do I implement cache invalidation?

Cache invalidation can be done by versioning your assets, using timestamps, or setting up a strategy to clear the cache when content changes.