We usually do not think about concurrency when building simple web applications. That is a mistake. Web applications may process multiple requests at the same time, and inconsistencies coming from concurrency may suddenly cause problems. Today's question is is i++ atomic in Java?. Can we assume that one of the simplest operations is thread-safe?
Since the second edition of Angular, you can break down the project into modules. Although the technicalities are widely known, developers are often not sure which components should go to which module and even what modules they should have.
At the end of March 2022, a serious security vulnerability was discovered in Spring Framework. All versions of spring-core were affected if used with Java 9 and newer. Unfortunately, it happened soon after Log4Shell.
Two databases used by one Spring Boot application does not seem tricky. But they both are accessed through Spring Data JDBC. And then the most tutorials remains tight-lipped. Even though that is not straight forward but still possible.
Executing operations one after another is easy. However, sometimes we desire more - parallelism. Are you sure you know how to execute tasks in parallel in Java? If not, let me show you how to start multiple threads with ExecutorService, give them some tasks and wait for the result.
