Course Advanced 8914
Course Introduction：Swoole enables PHP developers to write high-performance and high-concurrency TCP, UDP, Unix Socket, HTTP, WebSocket and other services, making PHP no longer limited to the Web field. The maturity of Swoole4 coroutines has brought PHP into an unprecedented period, providing unique possibilities for performance improvement.
Course Elementary 5961
Course Introduction：An asynchronous request means that after the client sends a request message, it does not wait for the server's response and continues to perform other operations. Web applications using Ajax technology can quickly present incremental updates to the user interface without the need to reload (refresh) the entire page, which allows the program to respond to user operations faster.
Course Intermediate 11246
Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.
Course Advanced 17582
Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.
javascript - What does it mean to write asynchronously in synchronous way?
2017-07-05 10:52:36 0 4 1103
2017-05-19 10:26:25 0 1 394
2017-05-02 09:52:30 0 1 736
php - Synchronize data between two tables
2017-07-03 11:40:18 0 1 849
Course Introduction：The synchronization mechanism (Synchronization) in Golang is an essential part of multi-threaded programming. However, in large-scale concurrency scenarios, the synchronization mechanism may become a performance bottleneck. Therefore, we need to think about how to optimize the synchronization mechanism to improve the performance of Golang programs. First, let us understand the commonly used synchronization mechanisms in Golang. Golang provides synchronization primitives such as mutex (Mutex), read-write lock (RWMutex) and condition variable (Cond). These are the same
2023-09-29 comment 0 1183
Course Introduction：The difference between java synchronization and asynchronousness: synchronization is safe, but due to the existence of synchronization mechanism, the performance will be relatively poor; asynchronousness is unsafe and can easily lead to deadlock. The death of such a thread may cause the entire process to crash; But because there is no synchronization mechanism, multi-threads execute asynchronously, and performance will be improved.
2019-12-03 comment 0 3824
Course Introduction：In a multi-process or multi-thread operating system environment, synchronization and mutual exclusion are key concepts used to ensure correct access to shared resources. The following are the design principles of synchronization and mutual exclusion and how they are implemented in Linux: Synchronization mechanism (Synchronization) The synchronization mechanism coordinates the execution of multiple execution threads or processes to ensure that they execute in a certain order or wait under specific conditions. process. Common synchronization mechanisms include semaphores, condition variables, barriers, etc. Design Principles Atomic Operations: Atomic operations refer to indivisible operations, either all of them are executed or none of them are executed. In synchronization, atomic operations are an essential element to ensure safe execution of a thread or process. Mutually exclusive access (Mu
2024-03-18 comment 0 870
