spring-modulith VS pf4j

If you use Java and Spring, you can have a look at Spring Modulith. It is an experimental Project by Spring to build modular Monoliths with Spring. This project can help to encapsulate your modules and to find a good project structure. For example it is helpful that references to internal module packages (sub-packages) are rejected.

Spring Modulith is trying to enforce strict module boundaries.

I haven't yet tried it myself, but it looks promising:

https://spring.io/projects/spring-modulith

To get a sense of the latter part you can check out the Spring Modulith project. It’s a modular monolith that lets us build a monolith using dynamic isolated pieces. With this approach we can separate testing, development, documentation and dependencies. This helps with the isolated aspect of microservice development with little of the overhead involved. It removes the overhead of remote calls and the replication of functionality (storage, authentication, etc.).

I'm working in a spring boot based environment using a setup similar to pf4j where additional JARs can be loaded at will during runtime. Each plugin may implement a set of interfaces which are then dynamically registered in the Applications IoC. The important part is: Each jar is loaded within a separate ClassLoader.

Hi everyone! Recently I've needed to figure out how PF4J library can be used from Clojure, and it was not very straightforward in some parts. There were almost no information on using PF4J from Clojure, so I've wrote this post, explaining what I've did to make things work by creating example plugin, as per PF4J demo application. Hope it will be useful for someone!