What microservice patterns do you know and have you applied?

In microservice architecture, the following patterns are often used:

• API Gateway — a single entry point for clients that routes requests to the necessary microservices, implements authentication, and data aggregation.
• Circuit Breaker — prevents cascading failures by disabling calls to non-operational services.
• Service Discovery — automatic detection of service addresses in a dynamic environment.
• Event Sourcing — storing state through a sequence of events, which simplifies recovery and integration.
• CQRS (Command Query Responsibility Segregation) — separating read and write operations for optimization and scaling.
• Saga — managing distributed transactions through a sequence of local transactions with compensations.

In Java projects, I have used API Gateway (for example, with Spring Cloud Gateway), Circuit Breaker (Resilience4j), Service Discovery (Eureka), and also Saga to ensure data consistency between microservices during complex business processes.