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A majority of the big corporations in the world are going the microservices way. Microservices are small independent but interconnected services that make up an application. This is unlike the earlier approach, when companies functioned with a single large
Microservice Communication: A Complete Guide 2023
If you are considering developing a web application using Microservice architecture, you’re on the right track to building a robust and scalable system. In this guide, we’ll explore the key ways microservices communicate with each other. By using the communication approach, you can benefit from improved flexibility, maintainability, and fault tolerance in your development process.
What are microservices?
Microservices are a modern architectural approach to developing applications by breaking them down into small, independent services that can be developed, deployed, and scaled independently. Each microservice is designed to perform a specific business function and communicates with other services through well-defined APIs.
Advantages of Microservices Architecture
- Scalability and Flexibility:
Microservices allow applications to scale specific services independently based on demand. This modular approach enables developers to add or modify features without affecting the entire application, making it highly adaptable to changing requirements.
- Improved Maintainability:
With each service being separate, the codebase becomes more manageable, making it easier to understand, update, and debug. Teams can work on individual services simultaneously, promoting faster development and deployment.
- Fault Isolation and Resilience:
In a Microservices architecture, if one service fails, it doesn’t bring down the entire system. Services are isolated, ensuring that failures are contained and the application remains resilient.
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How do Microservices Communicate?
Microservices architecture fosters effective communication between individual services, enabling seamless collaboration and improved scalability. Three primary communication methods employed by microservices are:
1. HTTP Communication:
Microservices often communicate through the HTTP protocol, which allows them to interact with each other using standard HTTP methods like ‘GET, POST, PUT, and DELETE.’ This ‘RESTful API’ communication ensures decoupled services and platform independence. HTTP-based communication is well-suited for request-response scenarios and synchronous interactions.
2. Message Communication:
Message-based communication involves the use of message brokers or queues to enable asynchronous interactions between microservices. This method ensures loose coupling, fault tolerance, and scalability. Services can send messages to queues, and other services can consume these messages at their own pace, facilitating better resilience in distributed systems.
Checkout the Guide on Microservices Testing
3. Event-Driven Communication:
In event-driven communication, microservices emit events when certain actions occur. Other services can subscribe to these events and respond accordingly. This pattern allows services to be loosely coupled and react to changes in the system in real time. Event-driven communication is valuable for implementing event sourcing and event-driven architectures.
Summary
By adopting Microservices architecture, your web application development process can be revolutionized and will be cost-effective. Microservices communicate effectively through ‘RESTful APIs,’ with each other, data stores, and various infrastructure components. This approach improves scalability, maintainability, and fault tolerance. With our expertise in Microservices development, you can unlock the full potential of this architecture for your business.
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