In order to solve the shortcomings of multi-threaded servers in high-concurrency I/O-intensive applications and avoid the performance obstacles of early simple single-threaded servers, Node.js adopts a non-blocking single-threaded model based on the “event loop” to implement The following two goals: (1) Ensure that each request can be responded to quickly; (2) Achieve the number of […]
Tag: single-threaded
Java BIO model (providing single-threaded and multi-threaded code examples)
Directory 1. Introduction to BIO features 2. BIO code implementation 2.1. Client code preparation 2.2. Server-side single-thread processing 2.2.1. Server code 2.2.2. Blocking code analysis 2.2.3. Problems 2.3. Server-side multi-thread processing 2.3.1. Server code 2.3.2. Problems 1. Introduction to BIO features BIO (blocking I/O): Synchronous blocking IO, each I/O operation (such as reading or writing) […]
4 reasons why single-threaded Redis is so fast
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Under Linux, based on TCP and UDP protocols, single-threaded communication server under different processes
C language implements single-thread communication server under different processes based on TCP and UDP protocols under Linux 1. TCP single-thread communication server Run the server first, then the client Enter “exit” to exit 1.1 server_TCP.c **#include <my_head.h> #definePORT 6666 #define IP “192.168.125.103” int main(int argc, const char *argv[]) {<!– –> // Create streaming socket int […]
SpringBoot scheduled task @Scheduled single-threaded and multi-threaded issues
Foreword The @Scheduled annotation is provided in the springboot framework, allowing us to quickly implement a scheduled task. But in fact, this annotation is single-threaded, and multiple scheduled tasks need to be executed one by one. If there are multiple tasks and one task takes too long to execute, it may cause other subsequent tasks […]
ConcurrentHashMap vs HashMap time-consuming difference in single-threaded/multi-threaded get operations
The test module of the document is expanded in the form of try -> modify -> try again -> modify again… I hope to get a result from multiple tests, but think about it carefully: the final result of the experiment is only It will be a probability result, and multiple attempts will only increase […]
01_Redis single-threaded and multi-threaded
01–Redis single-thread and multi-thread 1. Is Redis single-threaded or multi-threaded When talking about single-threaded or multi-threaded Redis, it needs to be distinguished according to the version. Before redis 3.x, redis was single-threaded Starting from redis 4.x, redis introduces multi-threading. When processing client requests, use a single thread; when performing operations such as asynchronous deletion, use […]
Redis_Redis is single-threaded, why is it so fast?
Reference article: Dachang classic interview question: Why is Redis so fast? – Nuggets Everyone knows that Redis is single-threaded, but it reads and writes very fast, and its QPS can reach 100,000 (requests per second). What is the reason? The following article summarizes this issue Redis single thread Redis is single-threaded, but not completely single-threaded. […]
Java export excel browser download, single-threaded VS multi-threaded
Java export excel browser download, single-threaded VS multi-threaded package com.mengyang.transactional.other.excelxssf; import com.mengyang.transactional.other.myselfExcel.ExcelUtils; import com.mengyang.transactional.pojo.ZhongXinDTO; import org.apache.poi.ss.usermodel.*; import org.apache.poi.xssf.streaming.SXSSFWorkbook; import javax.servlet.http.HttpServletResponse; import java.lang.reflect.Field; import java.net.URLEncoder; import java.util.Iterator; import java.util.List; import java.util.Objects; import java.util.concurrent.CountDownLatch; public class ExportExcelUtil { Class<T> clazz; public ExportExcelUtil(Class<T> clazz) { this. clazz = clazz; } //single thread public void exportExcel(HttpServletResponse response, String excelHeaer, […]
yolov5 deployment single-threaded and multi-threaded comparison
Single thread Deployment code can refer to: C++ Deployment of Yolov5 ONNX Runtime – Programmer Sought main.cpp #include “detector.h” #include <chrono> using namespace std; // identify thread void *detect_thread_entry(void *para){ } int main(int argc, char *argv[]) { auto start1 = std::chrono::system_clock::now(); Detector detector; bool isGPU=false; Utils utils; const vector<string> classNames=utils.loadNames(“/home/lrj/work/file/coco.names”); if(classNames. empty()){ cerr<<“Error: Empty class […]