一个零碎须要继续优化,日志尤为要害。通过巧用中间件记录零碎的慢申请,能够不必依赖任何监控型服务,定期剖析日志,从而优化零碎。
通过定义一个监控中间件,记录慢查问。
<code class="PHP"><?php namespace ModStart\Core\Monitor; use Illuminate\Http\Request; use Illuminate\Support\Facades\Log; class ModStartMonitorMiddleware { public function handle(Request $request, \Closure $next) { $response = $next($request); if (defined('LARAVEL_START')) { $time = round((microtime(true) - LARAVEL_START) * 1000, 2); $param = json_encode(\Illuminate\Support\Facades\Request::input()); $url = $request->url(); $method = $request->method(); if ($time > 1000) { Log::warning("LONG_REQUEST $method [$url] ${time}ms $param"); } } return $response; } }
如果常量 LARAVEL_START 未定义可在入口文件中定义。
<code class="PHP">define('LARAVEL_START', microtime(true));
在零碎 Kernel 类中减少中间件到所有申请。
<code class="PHP"><?php namespace App\Http; class Kernel extends \Illuminate\Foundation\Http\Kernel { protected $middleware = [ \ModStart\Core\Monitor\ModStartMonitorMiddleware::class, // ... ]; }
这样就能够在日志中看到慢申请
<code class="PHP">[2022-02-15 20:53:30] beta.WARNING: LONG_REQUEST GET [http://cms.demo.tecmz.com] 2140.96ms []