Programmer Think

1 basic concepts of process and thread 1.1 background of the process The original computer can only accept some specific instructions. Every time a user inputs an instruction, the computer makes an operation. When the user is thinking or typing, the computer is waiting. This is very inefficient. In many cases, the computer is in a waiting sta ...

In the previous article, I have published common interview questions. Here I spent some time sorting out the corresponding answers. Due to my limited personal ability, it may not be in place. If there are unreasonable answers, please give me some advice. Thank you here. This paper mainly describes the concurrent HashMap, a high-frequency inter ...

1. Background The interviewer asked how to pause a thread Tell me about your understanding of park 2. Code package com.ldp.demo01; import com.common.MyThreadUtil; import lombok.extern.slf4j.Slf4j; import java.util.concurrent.locks.LockSupport; /** * @author Blog emperor posture * @address https://www.cnblogs.com/newAndHui/ * @WeChat 8512 ...

Thread pool Why do I need a thread pool In practical use, threads occupy resources very much, and poor management of them is easy to cause system problems. Therefore, in most concurrency frameworks, thread pools are used to manage threads benefit Using thread pool can reuse existing threads to continue executing tasks, avoiding the consumpt ...

Processes and threads What are processes and threads? What is the difference between the two? How to implement threads? Methods commonly used in threads? What are the states in the thread? Thread scheduling problem? Thread safety issues? wait and notify methods in Object class? Producer and consumer model Process and thread and their differen ...

1. Overview of advanced knowledge points (from Shang School Video) Chapter 8 multithreadingChapter 9 common java classesChapter 10 enumeration classes and annotationsChapter 11 java collectionChapter 12 genericsChapter 13 IO flowChapter 14 network programmingChapter 15 java reflection mechanism (difficult)Chapter 16 other new features of Java ...

1. Optimistic lock Optimistic lock assumes that the data will not generate concurrency conflict under normal circumstances, so when the data is submitted and updated, it will formally detect whether the data has concurrency conflict. If concurrency conflict is found, it will return the user's error information and let the user decide ho ...

With the increasing number of cpu cores, it is inevitable to use multithreading technology to make full use of its computing power. Therefore, multithreading technology is a technology that service developers must master. Thread creation and destruction involve system calls and consume system resources. Therefore, thread pool technology is intr ...

Original link: https://mp.weixin.qq.com/s/ZqfN8UlWRpoGhznGH-L1mw introduce I came across an article written in 15 years. To be honest, the title really attracted me. I won't translate this article directly. I put the original address at the end of the article. The requirement of the project is very simple. The client sends the request and t ...

preface: In Java, the thread part is a key point. The JUC mentioned in this article is also about threads. JUC is Java util . Short for concurrent toolkit. This is a toolkit for processing threads. JDK 1.5 began to appear. Let's see how it works. 1, volatile keyword and memory visibility 1. Memory visibility: Let's take a look at the followi ...