Latency distribution, saturation point and queue behaviour under load — p95/p99, not the mean; backpressure and circuit breakers included.https://www.muhammetsafak.com.tr/en-USWed, 16 Sep 2026 00:00:00 GMTinfo@muhammetsafak.com.tr (Muhammet Şafak)https://www.muhammetsafak.com.tr/en/research/php-vs-go-oauth2-postgres-load-test/https://www.muhammetsafak.com.tr/en/research/php-vs-go-oauth2-postgres-load-test/At 10,000 writes a second all three candidates hit the target in five runs out of five, and none had a p99 above 2.5 ms: at this load the language is not a capacity line item. At 50,000 reads a second only Go held the target on four cores (p99 6.45 ms); PHP-FPM stopped at 23,528 and FrankenPHP at 22,859. CPU per read request is 64 microseconds for Go, 117 for FrankenPHP and 168 for PHP-FPM. Sized by instance, 50,000 reads take 3.4 cores in Go and 8.2–8.8 cores for the two PHP candidates. FrankenPHP's CPU saving does not turn into capacity: at saturation it leaves about one of its four cores idle.Wed, 16 Sep 2026 00:00:00 GMTservis-yukphpgobenchmarkoauth2postgresqlfrankenphpphp-fpmhttps://www.muhammetsafak.com.tr/en/research/php-framework-load-test/https://www.muhammetsafak.com.tr/en/research/php-framework-load-test/On an empty route the fastest is 4.4× the slowest (Slim 25,975, Laravel 5,966 req/s). As soon as the request does real work the gap closes: 3.7× for a single row from the database, 3.5× for twenty rows. Phalcon is third on an empty route and fifth once a query is involved — being a C extension buys nothing while the process waits on MySQL. And the expensive decision is not the framework: Laravel's own default `web` middleware group takes the same response from 5,858 to 2,176 req/s, so one default costs more than most of the distance between the frameworks.Thu, 20 Aug 2026 00:00:00 GMTservis-yukphpbenchmarkframeworkphp-fpmdocker