Programmer Think

Let's start with the router actor for akka-typed.route is divided into pool router and group router.Let's first look at a demonstration of using pool-router: val pool = Routers.pool(poolSize = 4)( // make sure the workers are restarted if they fail Behaviors.supervise(WorkerRoutee()).onFailure[Exception](SupervisorStrateg ...

This article comes from: PerfMa technology community Perfma official website summary JDK8 upgrade, most of the problems may be encountered in the compile time, but sometimes it is more painful, there is no problem in the compile time, but there is a problem in the run time, such as today's topic, so when you upgrade, you still need to test mo ...

preface For Java multithreading, in fact, it has been some scattered learning. Multithreading is often asked in the interview. I really want to summarize this certification this time, and I really don't want to fall in this field. According to "Java high concurrent programming details" a boo ...

Pain spot We often define constants, such as 1 2 3 4 5 6 7 public interface ItemType { public static final int TYPE_TEXT = 0; public static final int TYPE_IMG = 1; public static final int TYPE_VIDEO = 2; public static final int TYPE_AUDIO = 3; public static final int TYPE_LINK = 4; } When we print to see ...

brief introduction In the previous article, we introduced the use of jstat tool in JDK14. In this article, we will further explore the use of jstack tool. jstack tool is mainly used to print java stack information, mainly java class name, method name, bytecode index, row number and other information. More highlights: Blockchain from getting st ...

Traveling in the Java world, if you can have a pair of eyes that are good at discovery, there are many things to watch carefully, plus patience and help, you will often taste different things carefully. With this sharing, you can easily get the following points, which are absolutely rewarding. a) How do you make Java programs look elegant?Thoug ...

1. elatic engineer certification examination If you have the strength, you can take the exam. It will be helpful for the appreciation and salary increase 2. es architecture Ecosphere install jvm configuration Install plug-ins Use elasticsearch plugin in elasticsearch-7.1.0/bin to install the plug-in. es will download a ...

This article is based on OpenJDK 8 ~ 14 JEP 142 content It is used to fill a cache row with one or some field s that need to be read and modified by multiple threads. At the same time, due to the way of filling cache rows before Java 8, which is cumbersome and not elegant enough, there may be different sizes of cache rows, so the @ contented ...

Yunqi information:[ Click to see more industry information]Here you can find the first-hand cloud information of different industries. What are you waiting for? Come on! I think all Java programmers have been bothered by this new String question, which is a high-frequency Java interview question, but unfortunately, there are different opinions ...

When we read the source code of some Java frameworks, we often see the use of dynamic proxy mechanism, which can unconsciously enhance the methods of existing code, so that the code has a better expansibility. Through the static agent, JDK dynamic agent, CGLIB dynamic agent to analyze this paper. Static proxy Static proxy is that before the pr ...