ETags

ETags (Entity Tags) are identifiers used in HTTP headers to manage caching and validate web resources. They help in ensuring that clients and servers use the most current version of a resource.

How do you handle client-side caching and cache management in backend systems?

Client-side caching and cache management in backend systems play a crucial role in improving performance and reducing network traffic. By storing previously fetched data on the client-side, subsequent requests can be served from the cache instead of making round trips to the server. This not only minimizes latency and improves user experience but also reduces the load on the server. To handle client-side caching and cache management effectively, backend systems implement various mechanisms such as caching headers, ETags, last-modified timestamps, and cache invalidation strategies.

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