6 terms
OPcache is the PHP extension that stores compiled script bytecode in shared memory, removing repeated parsing and compilation to raise server performance.
A PHP worker pool is a managed set of PHP-FPM processes that execute requests in parallel, and its size largely decides server throughput and memory use.
Requests per second (RPS) measures how many requests a server completes each second, a core server performance metric read together with latency and errors.
Resource saturation is the state in which a server resource has more work than it can process, so requests queue and latency rises while throughput stalls.
Response time is the elapsed time between a client sending a request and receiving the server's complete answer, including queuing, processing and transfer.
Throughput in server performance is the amount of work a system completes per unit of time, such as requests per second, transactions or megabytes per second.
Terms explained in another topic that belong here too.
Connection pooling keeps a set of open database connections ready for reuse, cutting connection setup cost and capping the load clients place…