Experience with OPcache? How did you use and configure it? For what purposes?

OPcache is a PHP extension that caches the compiled bytecode of scripts in memory, significantly speeding up PHP code execution by eliminating the need for recompilation on each request.

In my practice, OPcache was used to improve the performance of web applications, especially under high loads. I configured parameters such as:

• opcache.memory_consumption — the size of memory allocated for the cache;
• opcache.max_accelerated_files — the maximum number of files in the cache;
• opcache.revalidate_freq — the frequency of checking for file changes.

This allowed balancing cache freshness and performance. I also used cache reset functions during deployment to ensure code updates are immediately applied.