A good thing to know for any Java dev working with Excel spreadsheets, let's see how the Apache POI library can help you programatically read and write Excel files with little overhead.
#java #io
https://dzone.com/articles/introduction-to-apache-poi-library

One request in your system results some threads and 10,000 requests results a lot more. This will eventually cause your system to run out of threads as more and more requests are in place. So how do we efficiently handle this case? Solution is NIO. Read on to see how to make one thread do another job like sending another request instead of waiting for the response send by a request.
#java #io #nio #middle #senior
https://medium.com/thinkspecial/reactive-nio-non-blocking-input-output-37c5cb44bf07