Is it possible to implement caching when using REST API according to the standard?

Yes, caching when using REST API can be implemented according to the HTTP standard. REST API typically uses the HTTP protocol, which supports caching mechanisms through response headers.

Main headers for caching:

• Cache-Control: manages caching policies (e.g., max-age, no-cache, public, private).
• ETag: a unique identifier for the resource version, allowing the client to check if the resource has changed.
• Last-Modified: the date of the last modification of the resource.

Example: the server returns a response with the header Cache-Control: max-age=3600, which means the client can use cached data for an hour.

Thus, by using standard HTTP headers, caching can be effectively implemented in REST API without additional protocols.