Book Image

Building Microservices with Spring

By : Dinesh Rajput, Rajesh R V
Book Image

Building Microservices with Spring

By: Dinesh Rajput, Rajesh R V

Overview of this book

Getting Started with Spring Microservices begins with an overview of the Spring Framework 5.0, its design patterns, and its guidelines that enable you to implement responsive microservices at scale. You will learn how to use GoF patterns in application design. You will understand the dependency injection pattern, which is the main principle behind the decoupling process of the Spring Framework and makes it easier to manage your code. Then, you will learn how to use proxy patterns in aspect-oriented programming and remoting. Moving on, you will understand the JDBC template patterns and their use in abstracting database access. After understanding the basics, you will move on to more advanced topics, such as reactive streams and concurrency. Written to the latest specifications of Spring that focuses on Reactive Programming, the Learning Path teaches you how to build modern, internet-scale Java applications in no time. Next, you will understand how Spring Boot is used to deploying serverless autonomous services by removing the need to have a heavyweight application server. You’ll also explore ways to deploy your microservices to Docker and managing them with Mesos. By the end of this Learning Path, you will have the clarity and confidence for implementing microservices using Spring Framework. This Learning Path includes content from the following Packt products: • Spring 5 Microservices by Rajesh R V • Spring 5 Design Patterns by Dinesh Rajput
Table of Contents (22 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Leader/follower pattern


Detection, demultiplexing, dispatching, and processing of service requests in the event sources is carried out in an efficient way in a concurrency model, in which many multiple threads process one by one to use the set on event sources. Another replacement for the Half-Sync/Half-Async is the leader/follower pattern. This pattern can be used instead of the Half-Sync/Half-Async and active object patterns for improvement in the performance. The condition of using this is that there must be neither ordering nor synchronization constraints while processing multiple threads of requests:

The focused job of this pattern is to process multiple events concurrently or simultaneously. Due to concurrency-related overheads, it might not be possible to connect a separate thread with each single socket handle. The highlighted feature of this design is that by using this pattern, demultiplexing the associations between threads and event source becomes possible. When the events arrive...