Programmer Group

I. Introduction With the development of enterprise systems, applications are mostly distributed, which depends heavily on the stability of the network. However, due to the inherent instability of the network, it is necessary to consider how to ensure the robustness of the application when the network is unstable. Setting up network timeouts is ...

_c/c++ memory management has always been the most headache for programmers. Memory crossing, array crossing, memory leak, memory overflow, wild pointer, empty pointer, any problem may cause program crash. And often the source of the problem is relatively hidden, making it difficult to find out the root cause of the problem.If we want to solve t ...

From https://www.jianshu.com/p/8bb7c11a2112 This time, I will explain the basic points of Bluetooth 4.0 and record it as my memo. First, popularize Bluetooth 4.0 based on Gatt protocol. Under Bluetooth 4.0, traditional Bluetooth is implemented in socket mode. So Bluetooth over 4.0 has the advantages of faster transmission ...

Network Communications Purpose of using the network Link multiple parties together for data transmission; Network programming is to allow software on different computers to transfer data, that is, inter-process communication. ip address The concept and function of ip address What is the IP address: some numbers like 192.168.1.1; ip address: use ...

Preface HTTP is our modern application network for exchanging data and media streams. Effective use of HTTP can save bandwidth and load data faster. Square's open source OkHttp network request is an efficient HTTP client. Previous knowledge is limited to the use of framework API. After touching the actual work, I know my lack of knowledge. So ...

1. Options for sockets After creating sockets, you can modify socket features Socket options are divided into three layers: SOL_SOCKET, IPPROTO_IP and IPPROTO_TCP. 2. Relevance function getsockopt #include<sys/socket.h> // Function: Get information about socket options // Parameters: // sock -- Used to view opti ...

1. Matrix algorithm In matrix multiplication, the number of columns of the first matrix and the number of rows of the second matrix must be the same. If parallel computing is needed, a simple strategy is to divide A matrix horizontally, get sub-matrices A 1 and A 2, B matrix vertically, and get sub-matrices B 1 and B 2. At thi ...

NET Standard supports a new set of APIs, System.Span, System.Memory, and System.IO.Pipelines. These new APIs have greatly improved the effectiveness of. NET programs, and many of the underlying. NET APIs will be rewritten in the future. Pipelines aims to solve a lot of problems when writing Socket communication programs in. NET. difficulty I be ...

This article mainly introduces Java Socket chat room programming (2) Using sockets to achieve single chat room related materials, very good, has reference value, the friends you need can refer to In the previous article, Java Socket Chat Room Programming (1) Using sockets to push chat messages, we talked about how to use sockets to get message ...

Catalog Summary Code Summary extend Reference Documents Summary Swoole asynchronous Task, which mainly implements execution of invoking asynchronous tasks. Common scenarios: asynchronous payment processing, asynchronous order processing, asynchronous log processing, asynchronous e-ma ...