Stop treating your Web Application Server as a black box.

Most Java developers press Run in their IDE and never think about what happens underneath. But the moment you need to configure a server from scratch, diagnose a production outage, or tune performance, that knowledge gap becomes a crisis.

WAS for Developers is a hands-on guide built from real-world experience — not theory. It covers the two servers you are most likely to encounter on the job: Apache Tomcat and JBoss/WildFly.

What you will learn:

Tomcat and JBoss/WildFly architecture from the inside out
Server configuration — connection pools, JNDI, data sources, and virtual hosts
Troubleshooting techniques for real production problems
Performance tuning — thread pools, JVM options, and garbage collection
Deployment strategies, logging, and security hardening
Migrating applications from Tomcat to JBoss
Real-world incident response scenarios and postmortems

Includes a JVM options cheat sheet, WAS error dictionary, and a configuration comparison covering WebLogic and WebSphere.

Written for working developers, by a working developer with 10+ years of enterprise Java experience.

"About this title" may belong to another edition of this title.

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We first started out as ?The Paperback Exchange,? a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become ?PBShop.? This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first visit or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.

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