https://useinov.com/tags/roadrunner/ Recent content in Roadrunner on Murat Useinov Hugo en-us Mon, 03 Apr 2023 15:45:00 +0300 https://useinov.com/posts/2023/persistent-worker-discipline/ Mon, 03 Apr 2023 15:45:00 +0300 https://useinov.com/posts/2023/persistent-worker-discipline/ <p>A static array with the comment &ldquo;cache, cleared per request&rdquo;. It went to production on RoadRunner last month, and the memory graph turned into a staircase.</p> <p>PHP had one superpower nobody advertised: the request died. Every leak, every forgotten static, every open transaction was erased when the process shut down. Shared-nothing was not architecture. It was amnesia, and amnesia forgave us everything.</p> <p>RoadRunner and Swoole take it away. The worker lives for thousands of requests, and the class of bugs changes on the first day. That &ldquo;per request&rdquo; cache became a cache per worker lifetime, and the supervisor killed the process when it ran out of memory. A logger kept the request id in a property, so entries from user B carried the id of user A. And the best one: an exception in the middle of a Doctrine transaction left the connection with the transaction open, and the next request on that worker silently joined it.</p>