Top 10 Microservices Design Patterns You Should Know

sourcd: dev.to

In today’s world of software development, microservices have become very popular. They help us build applications that are easy to scale and maintain. Let’s look at the top 10 design patterns that every developer should know when working with microservices.

1. API Gateway Pattern

Think of the API Gateway as a traffic controller for your microservices. It’s like having one main door to enter a building instead of using different doors for different rooms.

Why use it?

• It gives one entry point for all client requests
• Handles cross-cutting concerns like security and monitoring
• Can transform requests and responses

Here’s a simple example using Spring Cloud Gateway:

@Configuration
public class GatewayConfig {
    @Bean
    public RouteLocator gatewayRoutes(RouteLocatorBuilder builder) {
        return builder.routes()
            .route("orderService", r -> r
                .path("/orders/**")
                .uri("http://order-service:8081"))
            .route("paymentService", r -> r
                .path("/payments/**")
                .uri("http://payment-service:8082"))
            .build();
    }
}

2. Circuit Breaker Pattern