Interesting reads

Using java 8 features :

https://dzone.com/articles/functional-programming-patterns-with-java-8

Understanding time complexity :

https://adrianmejia.com/blog/2018/04/05/most-popular-algorithms-time-complexity-every-programmer-should-know-free-online-tutorial-course/

Async with Lightweight threads in java

http://blog.paralleluniverse.co/2014/02/06/fibers-threads-strands/

Go vs Java concurrency example of fetching urls :

https://dev.to/napicellatwit/go-for-java-developers-or-is-the-java-concurrency-that-bad-6ff

Profiling Javscript/Node applications

https://marmelab.com/blog/2018/04/03/how-to-track-and-fix-memory-leak-with-nodejs.html