Book Image

Hands-On High Performance with Spring 5

By : Chintan Mehta, Subhash Shah, Pritesh Shah, Prashant Goswami, Dinesh Radadiya
Book Image

Hands-On High Performance with Spring 5

By: Chintan Mehta, Subhash Shah, Pritesh Shah, Prashant Goswami, Dinesh Radadiya

Overview of this book

While writing an application, performance is paramount. Performance tuning for real-world applications often involves activities geared toward detecting bottlenecks. The recent release of Spring 5.0 brings major advancements in the rich API provided by the Spring framework, which means developers need to master its tools and techniques to achieve high performance applications. Hands-On High Performance with Spring 5 begins with the Spring framework's core features, exploring the integration of different Spring projects. It proceeds to evaluate various Spring specifications to identify those adversely affecting performance. You will learn about bean wiring configurations, aspect-oriented programming, database interaction, and Hibernate to focus on the metrics that help identify performance bottlenecks. You will also look at application monitoring, performance optimization, JVM internals, and garbage collection optimization. Lastly, the book will show you how to leverage the microservice architecture to build a high performance and resilient application. By the end of the book, you will have gained an insight into various techniques and solutions to build and troubleshoot high performance Spring-based applications.
Table of Contents (14 chapters)

Optimal isolation levels

As we learned in the previous section, the concept of a transaction is described with ACID. Transaction isolation level is a concept that is not limited to Spring Framework but is applicable to any application that interacts with a database. The isolation level defines how the changes made to some data repository by one transaction affect other concurrent transactions, and also how and when that changed data becomes available to other transactions. In Spring Framework, we define the isolation level of a transaction along with the @Transaction annotation.

The following snippet is an example of how we can define the isolation level in a transactional method:

private AccountDao accountDao;

public void someTransactionalMethod(User user) {

// Interact with accountDao


In the preceding code, we defined...