Top 10 Microservices Design Patterns Every Developer Should Know

Hello friends! In this video summary, we'll be exploring the top 10 microservices design patterns that every developer should be familiar with. These patterns are crucial for building robust, scalable, and maintainable microservices architectures.

1. Service Discovery

Service discovery is the process of automatically detecting and locating services in a dynamic environment. It allows services to find each other without hardcoded configurations. This is crucial for scaling and resilience.

2. API Gateway

An API Gateway acts as a single entry point for all client requests. It provides routing, authentication, authorization, rate limiting, and other crosscutting concerns. It simplifies client interactions and improves security.

3. Circuit Breaker

The Circuit Breaker pattern prevents cascading failures in a distributed system. When a service experiences failures, the circuit breaker trips, preventing further requests from reaching the failing service, thus allowing it time to recover.

4. Saga

Sagas are used to manage distributed transactions across multiple microservices. They ensure data consistency in the event of failures by orchestrating a series of local transactions with compensating transactions to rollback if necessary.

5. CQRS (Command Query Responsibility Segregation)

CQRS separates read and write operations into different models. This allows for optimizing each model independently, improving performance and scalability. It's particularly useful for complex applications with high read/write ratios.

6. DB per Service

This pattern suggests that each microservice should have its own dedicated database. This promotes loose coupling and allows each service to choose the best database technology for its specific needs. Data independence is key here.

7. Strangler Fig Pattern

The Strangler Fig pattern is a gradual migration strategy for modernizing legacy applications. It involves incrementally replacing parts of the legacy system with new microservices, while the old system continues to run until it is completely replaced.

8. Bulkhead Design Pattern

Bulkhead isolates different parts of the system so that a failure in one part does not affect other parts. It prevents cascading failures and improves the overall resilience of the system. Think of it like compartments on a ship.

9. Event Sourcing

Event sourcing persists the state of an application as a sequence of events. This allows for replaying events to reconstruct the current state, enabling auditability, debugging, and timetraveling capabilities. This offers incredible auditing abilities.

10. BFF (Backend for Frontends)

BFFs tailor the backend API specifically to the needs of different frontend applications (e.g., web, mobile). This prevents overfetching or underfetching of data and simplifies frontend development. Each frontend gets its own dedicated backend.

These are just some of the essential microservices design patterns. If you think I missed any important ones, please leave a comment! Thank you for watching, and remember to follow for more updates on microservices!