What is the best way to organize a data caching system?

Question

PHP

Good day to all. Question for PHP developers. What is the best way to organize data caching for fast work with them? My code sends a request to an external server and receives a response in the form of JSON, but I do not need to constantly send requests. Is it possible to implement response data caching better than writing the results to a file and reading them from that file?

Answer 1

First I'll answer the question you asked
. The best caching system is no caching.
And now for the one you wanted to ask

Is it possible to implement response data caching better than writing the results to a file and reading them from that file?

Maybe. But not necessary.

Answer 2

A much bigger problem is not caching, but cache invalidation. How do you understand when the cache is rotten and you need to request a new one. For some data, this is obvious (such as the exchange rate. Although there are subtleties here), but for some it is not.