this post was submitted on 22 Aug 2023
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Java
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Imho, the java aspect of it matters much less than the backend concepts. Are you already familiar with those ?
There's quite a lot of stuff to learn on the backend and it really depends on which layer you want to focus on. If you're interested in developing business services then i would recommend writing a restful API (for example for a to-do app) with spring boot and your preferred flavor of SQL database. That covers a lot already. From there you can look at how to scale performance up (caching, queuing, asynchronous).
I do have experience in nodeJS microservices, including DB ORMs and REST APIs. It's about migrating that knowledge to java environment now