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Top 10 Mistakes in Spring Boot Microservices and How to Avoid Them (With Examples)
Spring Boot has become the de facto standard for building microservices due to its simplicity, powerful features, and seamless integration with cloud environments. However, developers often make critical mistakes when designing, implementing, and deploying Spring Boot microservices. These mistakes can lead to performance bottlenecks, scalability issues, security vulnerabilities, and maintainability challenges.
In this article, we will explore the top 10 most common mistakes in Spring Boot microservices and how to avoid them with bad and good code examples.
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1️⃣ Not Using API Gateway Properly
In a microservices architecture, an API Gateway acts as a single entry point for handling client requests. Many developers skip API gateways, leading to tight coupling and security vulnerabilities.
❌ Bad Approach (Direct Communication)
Client → Service A → Service B → Service C🔹 Issues:
- Clients directly communicate with multiple services.
- Difficult to manage authentication and authorization.
- Hard to implement logging, monitoring, and rate-limiting.
✅ Good Approach (Using API Gateway — Spring Cloud Gateway)
Spring Cloud Gateway provides centralized routing, security, and monitoring.
@SpringBootApplication
@EnableDiscoveryClient
public class ApiGatewayApplication {
public static void main(String[] args) {
SpringApplication.run(ApiGatewayApplication.class, args);
}
}application.yml:
spring:
cloud:
gateway:
routes:
- id: user-service
uri: lb://USER-SERVICE
predicates:
- Path=/users/**
