Programmer Help

1, Thread pool Basics The specific use details of thread pool are beyond the scope of this article. If you want to know the usage, please Baidu. Here is only a small Demo of thread pool The function of the thread pool is to use the thread pool to execute 100000 threads. The thread task implements the callable interface. Each threa ...

First, let's take a look at why asynchronous programming is used in Spring and what problems can it solve? Why use asynchronous framework? What problems does it solve? In the daily development of SpringBoot, it is generally called synchronously. However, in practice, there are many scenarios that are very suitable for asynchronous proce ...

Transferred from: Micro reading (www.weidianyuedu.com) Micro reading - complete collection of model articles - a website for free learning knowledge First, let's take a look at the code for obtaining four thread pools: ExecutorService fixedThreadPool = Executors.newFixedThreadPool(10); ExecutorService cachedThreadPool = Executors.ne ...

Process, thread, fiber: Concept: Process: a running program Thread: an execution queue in a running program. A process has multiple threads Fiber: generally refers to threads in threads; The kernel space is called when the thread starts, and the user space is called when the fiber starts. Switching between threads is heavy and consumes mor ...

1, Introduction In the process of using the thread pool, we often encounter exceeding the cache queue of the thread pool and the maximum number of threads. At this time, if we use the default rejection policy, that is, throw an exception directly, then our data will be discarded and the program will stop. We don't know, because the program ...

1, Asynchronous call @EnableAsync enables asynchronous calls Start class addition@EnableAsync annotation @SpringBootApplication @EnableAsync public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } } Create asynchronous / synchronous method ...

Recently, I learned thread pool by myself. After reading other people's codes, I found that some functions and some strange keywords in the new features of C++11 are used in many codes. In addition, I don't know what this function is. As a result, I don't know how to understand it. After some reference, I understand something. I hereby record i ...

1. Introduction In development, batch processing business is sometimes encountered. If single thread processing, the speed will be very slow, which may lead to upstream timeout. This is the need to use multithreaded development. Thread pools should be used when creating threads. On the one hand, it avoids the cost of creating and destroying thr ...

Why is the Thread pool used when using threads,? What are the advantages and differences compared with creating Thread threads by users Before understanding the thread pool, take a look at the following figure to help understand the following contents Introduction to thread pool Thread is a very heavy resource. Its creation and destruction a ...

1. Why use thread pools? For example, we currently have a task that outputs the name of the current thread. Then we create a task, create a thread, give the task to the thread, and then start the thread. public class Task implements Runnable{ @Override public void run() { //Outputs the name of the current thread System. ...