microservices-patterns

To decompose a monolith into microservices, apply business capability decomposition and the Strangler Fig pattern to incrementally extract independent services like Order, Payment, and Inventory. This approach systematically breaks down monolithic architectures while maintaining operational continuity.

The Saga pattern manages distributed transactions in microservices by coordinating a sequence of local transactions across independent services. If a step fails, it triggers compensating transactions to rollback previous operations, ensuring data consistency without distributed locks.

The best way to handle inter-service communication in distributed systems is using event-driven communication and an API Gateway. The API Gateway routes external requests, while event-driven architectures enable asynchronous, resilient data exchange between internal microservices.

Implement circuit breaker patterns in fault-tolerant microservices by wrapping service calls with logic that monitors failures and temporarily blocks requests to struggling services. This prevents cascading failures and allows distributed systems to recover gracefully during outages.

You should use an API Gateway in a microservices architecture to provide a single entry point for external clients, route requests to internal services, and handle cross-cutting concerns. It abstracts internal service complexities and centralizes traffic management in distributed systems.