For most of my friends, High Availability is encountered a lot in projects, because this is an extremely important reference for measuring the service quality of IT systems. High availability is very important for both solution design and implementation. …

I believe that many small partners often use thread-safe container classes such as ConcurrentHashMap and ArrayBlockingQueue in many concurrent scenarios. Although these will sacrifice some efficiency, they can be guaranteed in terms of safety. Careful friends should be able to find that the thread-safe containers in the above examples are…

As we all know, the Object method in Java is used very frequently. All classes in Java have a common source, that is the Object class, and subclasses will inherit all the public methods in the Object class, so let’s take a look at these 8 methods today! Method 1: getClass As you…

For many programmers, even if they are very experienced, there are some points to pay attention to, and whether they have fully grasped it, let’s discuss it together. 1. Do you often encounter the repetitive work of rendering? For many experienced and veteran React friends, it may not be possible to fully understand rendering. Rendering happens frequently and often unexpectedly…

For early programmers, Redis is single-threaded, no doubt about it. So why do many friends have doubts about this now? Has Redis changed? Today we understand it all at once. Let’s take a look at these summaries:

I have sorted out the 5 “traps” of Java date processing, hoping to bring convenience to everyone’s usual work. 1. Learn about setting the time with Calendar Error demo: Calendar c = Calendar.getInstance(); c.set(Calendar.HOUR, 10); System.out.println(c.getTime()); operation result: Fri Oct 7 20:30:03 GMT+08:00 2022 Proper presentation: Calendar c = Calendar.getInstance(); c.set(Calendar.HOUR_OF_DAY, 10);

Spring Boot is a classic framework for Java development, so when the pressure on services rises, the optimization of Spring Boot services needs to be focused. In this article, I will introduce three new performance analysis tools and the optimization of Controller, Service, and Dao under the MVC architecture. (1)…

For senior programmers, in order to make web development more and more convenient, the technical level is constantly updated, from Servlet technology to Spring and Spring MVC. But for friends who have experience in Spring MVC development, they can deeply feel the pain. …

As senior programmers know, the core idea of Spring is the container, so in the project, if the container is refreshed, it will be a stormy sea. For Spring boot, it encapsulates Spring, following conventions rather than configuration, plus the mechanism of automatic assembly. Personally, I really like the mechanics…