Book Image

Designing Microservices Platforms with NATS

By : Chanaka Fernando
5 (1)
Book Image

Designing Microservices Platforms with NATS

5 (1)
By: Chanaka Fernando

Overview of this book

Building a scalable microservices platform that caters to business demands is critical to the success of that platform. In a microservices architecture, inter-service communication becomes a bottleneck when the platform scales. This book provides a reference architecture along with a practical example of how to implement it for building microservices-based platforms with NATS as the messaging backbone for inter-service communication. In Designing Microservices Platforms with NATS, you’ll learn how to build a scalable and manageable microservices platform with NATS. The book starts by introducing concepts relating to microservices architecture, inter-service communication, messaging backbones, and the basics of NATS messaging. You’ll be introduced to a reference architecture that uses these concepts to build a scalable microservices platform and guided through its implementation. Later, the book touches on important aspects of platform securing and monitoring with the help of the reference implementation. Finally, the book concludes with a chapter on best practices to follow when integrating with existing platforms and the future direction of microservices architecture and NATS messaging as a whole. By the end of this microservices book, you’ll have developed the skills to design and implement microservices platforms with NATS.
Table of Contents (15 chapters)
1
Section 1: The Basics of Microservices Architecture and NATS
5
Section 2: Building Microservices with NATS
11
Section 3: Best Practices and Future Developments

Trying out the sample application

At this point, we have implemented a basic OPD application using a microservice-based approach and have a NATS server cluster set up on our local computer. Now, let's go ahead and try out the sample application to verify its concepts, design, and implementation. The following diagram depicts the current state of the application:

Figure 6.10 – OPD application with a NATS server

As depicted in the preceding diagram, individual microservices have separate databases to store the data related to the respective microservice. Also, each microservice uses the NATS messaging platform to share data between other microservices.

Let's go ahead and try out the sample application and its functions. We will use curl as the client to connect with the microservices. You can use any HTTP client here, such as Postman or JMeter.

Prerequisites

Before running the application, you must execute the following steps:

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