Laravel Opcache Gui Laravel Package

Getting Started

Minimal Steps

1. Installation:

   composer require aping/laravel-opcache-gui
   

   Publish the configuration file (if needed):

   php artisan vendor:publish --provider="Aping\LaravelOpcacheGui\OpcacheGuiServiceProvider" --tag="config"
   

2. Configuration: Edit config/opcache-gui.php to set:

   • enabled (default: true)
   • route (default: /opcache-gui)
   • middleware (e.g., ['web'] or ['auth'] for restricted access)
   • cache_id (optional, if using multiple OPcache instances)

3. First Use Case: Access the GUI via the configured route (e.g., /opcache-gui). No additional setup is required—it automatically integrates with Laravel’s OPcache configuration.

Implementation Patterns

Workflows

1. Monitoring OPcache: Use the GUI to inspect:

   • Statistics: Hit rate, memory usage, cached scripts.
   • Script List: Filter by status (cached, expired, etc.).
   • Blacklist: Manage scripts excluded from caching.

2. Debugging Performance Issues:

   • Check for scripts with low hit rates (potential candidates for optimization).
   • Identify memory leaks by monitoring OPcache memory growth over time.

3. Integration with CI/CD:

   • Add a pre-deployment check (e.g., via a custom Artisan command) to validate OPcache settings:

     use Aping\LaravelOpcacheGui\Facades\OpcacheGui;
     
     public function checkOpcache()
     {
         $stats = OpcacheGui::stats();
         if ($stats['hit_rate'] < 0.75) {
             throw new \RuntimeException('OPcache hit rate too low!');
         }
     }
     

4. Restricting Access:

   • Protect the route with middleware (e.g., auth) in the config:

     'middleware' => ['web', 'auth'],
     

   • Use environment-based toggling:

     'enabled' => env('APP_ENV') !== 'production',
     

Tips for Seamless Integration

• Laravel Mix/Vite: Ensure OPcache is enabled in your local/dev environment to simulate production behavior.
• Shared Hosting: If OPcache is managed by the host, verify the GUI reflects their configuration (not your local settings).
• Custom Views: Extend the default Blade template by publishing the view:

  php artisan vendor:publish --provider="Aping\LaravelOpcacheGui\OpcacheGuiServiceProvider" --tag="views"
  

Gotchas and Tips

Pitfalls

1. OPcache Disabled:

   • The GUI will show no data if OPcache is disabled in php.ini (opcache.enable=0).
   • Fix: Enable OPcache and restart PHP (e.g., sudo service php-fpm restart).

2. Permission Issues:

   • If using opcache.file_cache, ensure the directory (opcache.file_cache=/tmp) is writable by the PHP process.
   • Debug: Check opcache.error_log for file permission errors.

3. Multiple PHP Versions:

   • The GUI defaults to the CLI PHP version. For SAPI-specific OPcache (e.g., FPM), use:

     'cache_id' => 'php-fpm',
     

     in the config.

4. Laravel Caching Conflicts:

   • OPcache and Laravel’s cache (e.g., Redis) are unrelated. The GUI only shows OPcache stats.

Debugging

• No Data Displayed:

  • Verify OPcache is loaded (php -m | grep opcache).
  • Check Laravel logs (storage/logs/laravel.log) for OPcache-related errors.

• Slow GUI Response:

  • OPcache stats are fetched via opcache_get_status(). High traffic may cause delays.
  • Mitigation: Cache the stats in memory (e.g., using Laravel’s cache):

    $stats = Cache::remember('opcache_stats', now()->addMinutes(5), function () {
        return opcache_get_status();
    });
    

Extension Points

1. Custom Metrics:

   • Extend the GUI by adding a custom tab. Override the resources/views/vendor/opcache-gui/index.blade.php view and include additional logic:

     @inject('opcache', 'Aping\LaravelOpcacheGui\Facades\OpcacheGui')
     <div class="custom-metrics">
         {{ $opcache->customMetric() }}
     </div>
     

2. Artisan Commands:

   • Create a custom command to reset OPcache:

     use Aping\LaravelOpcacheGui\Facades\OpcacheGui;
     
     class ResetOpcacheCommand extends Command
     {
         public function handle()
         {
             OpcacheGui::reset();
             $this->info('OPcache reset successfully.');
         }
     }
     

3. Event Listeners:

   • Listen for OPcache changes (e.g., after deployment):

     use Aping\LaravelOpcacheGui\Events\OpcacheUpdated;
     
     OpcacheUpdated::listen(function ($event) {
         Log::info('OPcache updated at ' . now());
     });
     

Configuration Quirks

• opcache.revalidate_freq:

  • A low value (e.g., 2) forces frequent script revalidation, reducing cache efficiency.
  • Recommendation: Set to 180 (3 minutes) for most applications.

• opcache.max_accelerated_files:

  • If set too low, the GUI may show "Script not cached" for many files.
  • Default: 10000 (adjust based on your app’s size).

• Environment-Specific Settings:

  • Use environment variables in config/opcache-gui.php:

    'route' => env('OPACHE_GUI_ROUTE', '/opcache-gui'),