Configure multiple PHP-FPM workers

services/nginx/app/tests/Unit/Infrastructure/PhpFpmWorkerConfigTest.php

@@ -0,0 +1,45 @@
+<?php
+
+function phpFpmWorkerConfigRepoPath(string $relative): string
+{
+    $appRoot = defined('WD') ? WD : dirname(__DIR__, 3);
+
+    return dirname($appRoot, 3) . DIRECTORY_SEPARATOR . str_replace(['/', '\\'], DIRECTORY_SEPARATOR, $relative);
+}
+
+function phpFpmWorkerConfigValue(string $poolConfig, string $key): ?int
+{
+    if (!preg_match('/^' . preg_quote($key, '/') . '\s*=\s*(\d+)\s*$/m', $poolConfig, $matches)) {
+        return null;
+    }
+
+    return (int)$matches[1];
+}
+
+it('configures PHP-FPM with multiple warm request workers', function (): void {
+    $poolPath = phpFpmWorkerConfigRepoPath('services/php/php-fpm-pool.conf');
+    expect(is_file($poolPath))->toBeTrue();
+
+    $poolConfig = (string)file_get_contents($poolPath);
+
+    expect($poolConfig)->toContain('[www]')
+        ->and($poolConfig)->toContain('pm = dynamic')
+        ->and(phpFpmWorkerConfigValue($poolConfig, 'pm.max_children'))->toBeGreaterThanOrEqual(8)
+        ->and(phpFpmWorkerConfigValue($poolConfig, 'pm.start_servers'))->toBeGreaterThanOrEqual(4)
+        ->and(phpFpmWorkerConfigValue($poolConfig, 'pm.min_spare_servers'))->toBeGreaterThanOrEqual(4)
+        ->and(phpFpmWorkerConfigValue($poolConfig, 'pm.max_spare_servers'))->toBeGreaterThanOrEqual(8);
+});
+
+it('copies the worker pool config into every API PHP image', function (): void {
+    $copyInstruction = 'COPY services/php/php-fpm-pool.conf /usr/local/etc/php-fpm.d/zz-pleno-workers.conf';
+    $dockerfiles = [
+        phpFpmWorkerConfigRepoPath('Dockerfile'),
+        phpFpmWorkerConfigRepoPath('Dockerfile.coolify-api'),
+        phpFpmWorkerConfigRepoPath('services/php/Dockerfile'),
+    ];
+
+    foreach ($dockerfiles as $dockerfile) {
+        expect(is_file($dockerfile))->toBeTrue();
+        expect((string)file_get_contents($dockerfile))->toContain($copyInstruction);
+    }
+});

services/php/Dockerfile

@@ -73,6 +73,7 @@ WORKDIR /var/www/html
 
 # Copy and enable entrypoint that installs Composer deps on first run
 COPY services/php/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+COPY services/php/php-fpm-pool.conf /usr/local/etc/php-fpm.d/zz-pleno-workers.conf
 RUN sed -i 's/\r$//' /usr/local/bin/docker-entrypoint.sh \
     && chmod +x /usr/local/bin/docker-entrypoint.sh
 

services/php/php-fpm-pool.conf

@@ -0,0 +1,7 @@
+[www]
+pm = dynamic
+pm.max_children = 8
+pm.start_servers = 4
+pm.min_spare_servers = 4
+pm.max_spare_servers = 8
+pm.max_requests = 500