Programmer Group

Introduction to redis and common commands Introduction to redis Redis is an open source, BSD-licensed, key-value caching and storage system.Because Redis's keys include string, hash, list, set, sorted set, bitmap, and hyperloglog, they are often referred to as data structure servers.You can run atomic operations on these types, such as ap ...

I. Overview Because of the need of the project, there is a module function in the company's project recently, which requires immediate approval notification. The original design scheme is to use ajax to poll the server regularly. At the beginning, when the amount of data and usage is not large, it's good. Later, with the increase of usage and ...

As programmers, we often use the upload and download functions of files. When it's time to use it, check all kinds of information. There's wood. There's wood. In order to facilitate the next use, here is a summary and a memorandum. Using Form to Upload Files The most primitive, simple and rude file upload. Front-end code: //Mode 1 <form acti ...

Create a project Create an empty Web project, and add SignalR, jQuery UI package to Nuget, and include jQuery, jQuery.UI, and ignalR scripts in the future project.   Creating Basic Applications Add a SignalR Hub class and name it MoveShapeHub to update the code. using Microsoft.AspNet.SignalR; using Newtonsoft.Json; namespace Sig ...

I. Review Alipay plug-in source download address: Click Download           Part One This article introduces the use of Alipay plug-in for payment, full refund, partial refund and multi store configuration of plug-ins. This paper introduces how to implement it. II. Pre-preparation Plug-ins have three main functions: Multi-Store Plug-in Config ...

In the development of business system, the query, paging and sorting of table records are very common. In the development of Web, many powerful plug-ins can be used to meet the requirements and greatly improve the development efficiency. This article introduces bootstrap-table as a very famous open source form plug-in, which is widely used in m ...

Hello, everyone, in this article, I will introduce ASP.NET MVC model view binding, ASP.MVC model binding is divided into two kinds: one is Dynamic Binding; the other is Strongly typed binding; [PS--last article: 3. How to publish ASP.NET MVC applications to IIS] When we pass data from the controller to the view, we return an object of ViewRe ...

Recent projects, all is normal after online, after a period of time administrators feedback users to export EXCEL error report, the front desk access user list does not display, find the problem is that Weixin nickname, emoji expression caused the error. Introduction to emoji expression Because the emoji expression in the wechat interface u ...

OPC Server It is a set of architectures that use Microsoft COM/DCOM technology to achieve industrial automation data acquisition.OPC Server provides an OPC interface, which returns the information values of the physical devices (PLC s) connected to it to the client application through the interface.That is, through these interfaces, clients ca ...

OPC Server It is a framework that uses Microsoft COM/DCOM technology to achieve industrial automation data acquisition. OPC Server provides an OPC interface, which returns the information value of the connected physical device (PLC) to the client application through the interface. That is to say, through these interfaces, the client can get th ...