Microservices and Jakarta EE

Some may think that Jakarta EE is “too heavyweight” for microservices development. This is simply not the case. Because of this misconception, some may also think that Jakarta EE may not be suitable for a microservices architecture when, in reality, Jakarta EE fits microservices development well. Some time ago, Java EE applications were deployed to a “heavyweight” application server. Nowadays, most Jakarta EE application server vendors offer lightweight application servers that use very little memory or disk space. Some examples of these Jakarta EE-compliant lightweight application servers include IBM’s Open Liberty, Red Hat’s WildFly Swarm, Apache TomEE, and Payara Micro. Jakarta EE 10 introduced the core profile, which is ideal for microservices development using Jakarta EE.

Developing microservices with the Jakarta EE core profile involves writing standard Jakarta EE applications, while limiting yourself to...