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Designing Microservices Platforms with NATS

You're reading from Designing Microservices Platforms with NATS

Product type Book

Published in Nov 2021

Publisher Packt

ISBN-13 9781801072212

Pages 356 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Chanaka Fernando

Table of Contents (15) Chapters

Preface

1. Section 1: The Basics of Microservices Architecture and NATS

2. Chapter 1: Introduction to the Microservice Architecture

3. Chapter 2: Why Is Messaging Important in the Microservice Architecture?

4. Chapter 3: What Is NATS Messaging?

5. Section 2: Building Microservices with NATS

6. Chapter 4: How to Use NATS in a Microservice Architecture

7. Chapter 5: Designing a Microservice Architecture with NATS

8. Chapter 6: A Practical Example of Microservices with NATS

9. Chapter 7: Securing a Microservices Architecture with NATS

10. Chapter 8: Observability with NATS in a Microservices Architecture

11. Section 3: Best Practices and Future Developments

12. Chapter 9: How Microservices and NATS Coexist with Integration Platforms

13. Chapter 10: Future of the Microservice Architecture and NATS

14. Other Books You May Enjoy

Setting up the NATS server cluster

NATS servers can be clustered to support high-volume systems and to provide better availability. NATS uses a simple clustering protocol to connect with other servers via gossiping and connecting to all the servers that a particular server is aware of. Once clients connect to a given server, the clients are informed about the current cluster members. We discussed NATS clustering in detail in Chapter 3, What Is NATS Messaging?. For this chapter, let's create a three-node cluster to try out our OPD microservice application.

Starting up the three-node NATS server cluster

Let's start a three-node cluster by specifying the client port and the cluster port, as shown here:

Start the first server as the seed server:

$ nats-server -p 4222 -cluster nats://localhost:4248 -D

Start the second server by specifying the cluster URL of the first (seed) server:

$ nats-server -p 5222 -cluster nats://localhost:5248 -routes nats://localhost:4248...

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Authors (1)

Chanaka Fernando

Chanaka Fernando is a solution architect with 12+ years of experience in designing, implementing, and supporting enterprise-scale software solutions for customers across various industries including finance, education, healthcare, and telecommunications. He has contributed to the open source community with his work (design, implementation, and support) as the product lead of the WSO2 ESB, one of the founding members of the "Ballerina: cloud-native programming language" project, and his own work on GitHub. He has spoken at several WSO2 conferences and his articles are published on Medium, DZone, and InfoQ. Chanaka has a bachelor's degree in electronics and telecommunications engineering from the University of Moratuwa.

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