$this->orderData = $orderData;
$catalogUrl = config('services.catalog.url') . "/api/products/$productId";
return $next($request); When creating an order, the Order Service must check if the product exists and has stock in the Catalog Service.
use SerializesModels; public $orderData; Laravel Microservices- Breaking a Monolith to M...
try $user = JWTAuth::parseToken()->authenticate(); catch (Exception $e) return response()->json(['error' => 'Unauthorized'], 401); // Inject the user ID from token into the request $request->merge(['authenticated_user_id' => $user->id]);
Run consumer: php artisan queue:work rabbitmq --queue=order.events Instead of exposing three services to the internet, use one Laravel instance as a gateway.
public function handle(OrderPlaced $event) foreach ($event->orderData['items'] as $item) Product::where('id', $item['product_id']) ->decrement('stock', $item['quantity']); But as your startup grows into an enterprise,
$product = $response->json();
public function broadcastOn()
This article is written as an educational resource, covering the why , how , and implementation using Laravel and Docker. Introduction Most Laravel applications start as a beautiful, well-organized monolith. You use Eloquent, MVC, Service Providers, and everything feels fast and cohesive. But as your startup grows into an enterprise, the "Single Laravel Monolith" begins to crack. [ 'query' =>
In order-service :
Synchronous HTTP calls create temporal coupling . If Catalog service is down, Orders fail. Use Circuit Breaker pattern (e.g., Laravel Circuit Breaker cache driver). Step 4: Asynchronous Events (Using RabbitMQ) To avoid tight coupling, use events. When an order is placed, OrderService emits OrderPlaced event. CatalogService listens and reduces stock.
Route::post('/auth/login', fn() => proxyTo('http://auth-service/api/login')); Route::get('/products', fn() => proxyTo('http://catalog-service/api/products')); Route::post('/orders', fn() => proxyTo('http://order-service/api/orders')); function proxyTo($url) $response = Http::withHeaders(request()->headers->all()) ->send(request()->method(), $url, [ 'query' => request()->query(), 'json' => request()->json()->all() ]);
// In every service's bootstrap/app.php ->withMiddleware(function (Middleware $middleware) $middleware->prepend(\OpenTelemetry\Contrib\Laravel\OtelMiddleware::class); ) Now, all logs and HTTP calls share a trace-id header. Use Jaeger to visualize the entire flow. Do not break your Laravel monolith unless you have at least 5 developers and 50K daily active users. Microservices introduce latency, network failures, and eventual consistency.
order-service: build: ./order-service environment: SERVICES_CATALOG_URL: http://catalog-service:8000 RABBITMQ_HOST: rabbitmq ports: - "8003:8000"