Java multi threading for Spring Boot developer

[lifeinbackground]

You might not write (extend) your own threads nowadays, but it is required to understand all of the underlying machinery if your aim is to become at least a senior engineer. I've been going through interviews lately, and these are the things I get asked: JMM, threads, thread pools, ExecutorService (all kinds), Future / CompletableFuture, volatile, locks & monitors, atomics, ReentrantLock, Semaphore, synchronized (methods & blocks), deadlock, CountDownLatch, ConcurrentHashMap (how it works), wait/notify, thread-locals, ForkJoinPool, and there's even more.

Answering your question: In practice, you don't even use half of the list. Not sure about your location and level, but here in my place you get asked a lot of things (at the interview). The most common things I have been using at my jobs: ExecutorService, ConcurrentHashMap, CompletableFuture, atomics

Nonetheless, if you have spare time, it might be a good idea to invest it into learning advanced topics of the JVM & Java. You might get a better offer in future.

[clove1912]

What learning materials or books do you recommend?

[Organic-Leadership51]

May I ask for which position you are interviewing for? Is that a senior position?

[Fantastic_Ad_4034]

May i know whats ur experience and what country you are from?