Tag：Multithreading
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How to realize multithreaded programming with PHP
catalogue Multithreading thread Applicable scenarios Multithreading in PHP Thread safety PHP implementation Classes and methods Example code Asynchronous request Timeout control summary Multithreading thread First, let’s talk about threads: Thread is the smallest unit that the operating system can schedule operations. It is included in the process and is the actual operation unit in the […]
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Python multithreading task instance
catalogue One for a good meal every dayExcelAfter we import the summarized dining data into the database, the administrative office service compares it with the dining data in the company. The initial implementation is single threaded, andimport_recordsThe part after removing multithreading is almost the same. Read Excel data – > send to administrative service interface […]
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One of the design patterns — singleton pattern
1. Singleton mode 1.1 definitions What is singleton mode? Singleton mode is also called singleton mode. Its purpose is to ensure that a class has only one instance in the system and provide a global access point to access it. Many times, the whole system only needs to have ⼀ global objects, which is conducive […]
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C # implements multithreading
C # implements multithreading Processes that want to perform tasks need to rely on threads. In other words, the smallest execution unit in a process is a thread, and there is at least one thread in a process. Multithreading is divided into two types, one is serial and the other is parallel. serial Serial is […]
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Linux semaphore
Article catalogue POSIX semaphore Principle of semaphore Concept of semaphore Semaphore function Binary semaphore simulation to realize mutual exclusion function Circular queue based production model Space resources and data resources Producers and consumers apply for and release resources Two rules that must be observed code implementation Principle of semaphore protected ring queue POSIX semaphore Principle […]
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Common locking strategies in concurrent programming
Common lock strategies Optimistic lock, pessimistic lock Optimistic lock and pessimistic lock are terms introduced into the database, but similar ideas are also introduced into concurrent package lock. Pessimistic lock Pessimistic lock refers to a conservative attitude towards data being modified by the outside world,It is considered that the data can be easily modified by […]
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Interviewer: have you used multithreading in your project?
Hi, I’m brother Tian Recently, from last year to now, I have done more than 100 simulated interviews for my partners. Sometimes I wonder, is it really rolling now? Most people’s first simulated interview ended, which didn’t make me feel as good as everyone said. Strange phenomenon In the process of simulated interview, I accidentally […]
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Parallel cargoes who say volatile has nothing to do with the MESI agreement, please shut up
I’ve always wanted to talk about this problem. Garbage training institutions have taken leeks to the side. They say that volatile has nothing to do with MESI protocol on the Internet. Does it matter?? Sit down and listen carefully! 1. Cache consistency problem Due to the large difference between the operation speed of the storage […]
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Linux producer consumer model
Article catalogue Producer consumer model Concept of producer consumer model Characteristics of producer consumer model Advantages of producer consumer model Producer consumer model based on BlockingQueue Producer consumer model based on blocking queue Simulation and implementation of production and consumption model based on blocking queue Producer consumer model Concept of producer consumer model Producer consumer […]
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Basic use of c# efficient programming “multithreading”
English meaning: What is multithreading? For example, you need to build a house. If you use single thread, you install the door, floor and water pipe of the house by yourself. In this way, the efficiency is very low“After all, it’s still a person who carries all the burden”。 But when you start a thread, […]
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Java handwriting thread pool – second generation (original)
Personal profile The author is a junior from Heyuan. The following notes are some shallow experience of the author’s self-study road. If there are mistakes, please correct them. In the future, we will continue to improve our notes to help more java lovers get started. Article catalogue Personal profile Java handwriting thread pool (second generation) […]