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Concurrent programming Executor thread pool principle and source code analysis ThreadPoolExecutor default thread pool Creation of thread pool public ThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, ...

1, Basic concepts Before talking about thread pool technology, we first explain some basic concepts in the operating system, such as process, thread, thread creation and destruction. Processes and threads process An application running in memory. Each process has its own independent memory space. A process can have multiple threads. For ...

Next blog https://blog.csdn.net/qq_43605444/article/details/121727738?spm=1001.2014.3001.5501 6. Worker class The following is an official comment on the Worker class: /** * Class Worker mainly maintains interrupt control state for * threads running tasks, along with other minor bookkeeping. * This class opportunistically extends Abstr ...

Thread pool creation and use Creation of thread pool The Executors framework provides various types of thread pools, mainly including the following factory methods: public static ExecutorService newFixedThreadPool(int nThreads) public static ExecutorService newCachedThreadPool() public static ScheduledExecutorService newScheduledThreadPool(int ...

preface During the project two days ago, I wanted to improve the performance optimization of inserting tables, because there are two tables. Insert the old table first, and then insert the new table. More than 10000 data are a little slow The thread pool ThreadPoolExecutor comes to mind later, and the Spring Boot project is used. The thread p ...

  catalogue Thread pool Global thread pool Local thread pool Thread pool         Thread pool is to create some threads first, and their collection is called thread pool. Using thread pool can improve performance. When the system starts, the thread pool creates a large number of idle threads. The program passes a task ...

1. Thread pool     As we all know, a thread is an executing branch of a process     On the operating system, scheduling is carried out on a site by site basis     => Theoretically, the more threads a process has, the higher its processing efficiency     But in fact, it is affected by the operating s ...

preface This article belongs to the column "100 problems to solve Java concurrency". This column is original by the author. Please indicate the source of quotation. Please help point out the deficiencies and errors in the comment area. Thank you! Please refer to table of contents and references for this column 100 problems to sol ...

preface This article belongs to the column "100 problems to solve Java concurrency". This column is original by the author. Please indicate the source of quotation. Please help point out the deficiencies and errors in the comment area. Thank you! Please refer to table of contents and references for this column 100 problems to sol ...

JUC common classes It refers to the class under the import java.util.concurrent package, which is usually used to solve the problem of multi-threaded coordination lock and derived ReentrantLockSecurity classes of various containers: CopyOnWriteArrayList, ConcurrentHashMapUnsafe collection to safe collection: Collections.synchronizedLis()... ...