The CompletableFuture has been introduced since JDK 8 (2014). This is a abstraction over the `java.util.concurrent. Learn the basics of Java 9 Parallelism before read this post.

Spring property and profile manangement is explained.

This is a short explanation of how to use Spring boot CLI to create project and run in the macOS.

GitHub API is Hypermedia based. This is an elementary post introducing how to interact with GitHub API using curl and the jq tools.

Quick sort best and the avarage runining time is \(O(n\log{}n)\).

To learn more about Python generators, see python fun.