Microservices with Symfony
API Gateway, service discovery, distributed transactions, event-driven architecture, resilience patterns
1What is an API Gateway in a microservices architecture?
What is an API Gateway in a microservices architecture?
Respuesta
An API Gateway is a single entry point for all client requests to microservices. It acts as a reverse proxy that routes requests to appropriate services, handles authentication, rate limiting, caching and response aggregation. In the Symfony ecosystem, solutions like Kong, Traefik or custom implementations with Symfony can serve as a Gateway.
2Which pattern allows managing distributed transactions across multiple microservices without global locking?
Which pattern allows managing distributed transactions across multiple microservices without global locking?
Respuesta
The Saga pattern manages distributed transactions by decomposing them into a sequence of local transactions. Each service executes its local transaction and publishes an event to trigger the next one. On failure, compensating transactions are executed to undo changes. This pattern avoids distributed locks and improves availability.
3How does Symfony Messenger facilitate asynchronous communication between microservices?
How does Symfony Messenger facilitate asynchronous communication between microservices?
Respuesta
Symfony Messenger allows sending messages to external transports like RabbitMQ, Amazon SQS or Redis. Each microservice can publish messages to a bus and other services consume them asynchronously. Messages are serialized (JSON, Protobuf) and can cross service boundaries, enabling loose coupling.
What is the Circuit Breaker pattern and how to implement it with Symfony?
What is the main advantage of the Database per Service pattern in a microservices architecture?
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