The Linux IO model refers to the way in which user processes and the kernel perform input and output operations in a Linux system. Input and output operations usually involve the transmission and copying of data. These operations consume system resources and time. Therefore, choosing an appropriate IO model is very important to improve the […]
Tag: asynchronous
10-Asynchronous programming (concurrent, parallel, synchronous, asynchronous, blocking, non-blocking), synchronous blocking, asynchronous blocking, synchronous non-blocking, asynchronous non-blocking
1 concurrent 2 parallel 3 sync 4 asynchronous 5 blocking 6 non-blocking 6.1 Synchronous blocking, asynchronous blocking, synchronous non-blocking, asynchronous non-blocking 7 Asynchronous Programming 1 concurrent 1 Concurrency describes the organizational structure of the program. It means that the program should be designed into multiple subtasks that can be executed independently. 2 The purpose is […]
Asynchronously send logs to remote server in Python
background The most common way to use logs in Python is to output logs in the console and files. The logging module also provides corresponding classes that are very convenient to use. However, sometimes we may have some needs, such as How to achieve this requirement by sending logs to the remote end or directly […]
JavaScriptAsynchronous operation
Article directory Callbacks Promise Async/Await – more recommended In JavaScript, you can use asynchronous operations to handle code that needs to wait for some operation to complete before continuing. Asynchronous operations can help us avoid blocking the main thread and improve program performance and responsiveness when making network requests, reading and writing files, processing large […]
05_01_vue01_ES6 modularity and asynchronous programming
ES6 Modularity Basic concepts of modularization Front-end modular classification Before the birth of the ES6 modular specification, the JavaScript community had already tried and proposed modular specifications such as AMD, CMD, and CommonJS. However, these modular standards proposed by the community still have certain differences and limitations, and are not universal modular standards for browsers […]
Verilog asynchronous FIFO implementation
module fifo_async#( parameter data_width = 32, parameter data_depth = 8, parameter addr_width = 4 ) ( input rst_n, input wr_clk, input wr_en, input [data_width-1:0] din, input rd_clk, input rd_en, output reg valid, output reg [data_width-1:0] dout, output empty, full output ); reg [addr_width:0] wr_addr_ptr;//Address pointer, one more bit than the address, MSB is used to […]
SNMP authentication methods (asynchronous authentication and direct authentication)
Article directory code Verification results on actual machines Code import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import lombok.extern.slf4j.Slf4j; import org.snmp4j.CommunityTarget; import org.snmp4j.PDU; import org.snmp4j.Snmp; import org.snmp4j.event.ResponseEvent; import org.snmp4j.event.ResponseListener; import org.snmp4j.mp.SnmpConstants; import org.snmp4j.smi.*; import org.snmp4j.transport.DefaultUdpTransportMapping; import java.io.IOException; import java.util.concurrent.CountDownLatch; import java.util.concurrent.TimeUnit; /** * qipengshang <2023-5-16> */ @Slf4j public class SnmpUtil {<!– –> /*Default parameters */ public static final int […]
Angular asynchronous data flow programming
1 Several common methods of asynchronous programming First give an example of an asynchronous request: import {<!– –>Injectable} from ‘@angular/core’; @Injectable({<!– –> providedIn: ‘root’ }) export class RequestServiceService {<!– –> constructor() {<!– –> } getData() {<!– –> setTimeout(() => {<!– –> let res = ‘zhaoshuai-lc’ return res }, 3000) } } import {<!– –>Component, OnInit} […]
Spring asynchronous processing – @Async annotation
1. Introduction @Async is a very useful asynchronous writing method in the spring framework: 1. Use the @Async annotation on the method to declare that the method is an asynchronous task; 2. Use the @Async annotation on the class to declare that all methods in the class are asynchronous tasks; 3. The class object using […]
A set of universal asynchronous processing solutions
Preface Purpose advantage principle components Design Patterns flow chart database script Asynchronous strategy Security Level Execution status flow chart apollo configuration usage Notice Show results github address 1Foreword Good system design must adhere to the opening and closing principle. As the business continues to be iteratively updated, the core code will be constantly modified, and […]