Course 9537
Course Introduction:In this era of data explosion, how can we find what we want in the vast amount of data? How is this achieved? Next, you can learn PHP's fuzzy query technology together.
Course 16710
Course Introduction:Python is a computer programming language and a dynamic, object-oriented scripting language. It was originally designed for writing automated scripts (shell). This course will lead you to manually develop a word query system from scratch using python3.6
Course 3218
Course Introduction:JS is an essential part of website development. It can achieve dynamic page effects and make the visual impact of the page stronger. This lesson mainly focuses on the theme of realizing carousel effect, including native js and jquery. In native js, it mainly explains the operation of events, and uses the learned knowledge points to achieve seamless scrolling carousel effect and switching carousel effect.
Course 20320
Course Introduction:In this era of data explosion, how can we find what we want in the vast amount of data? How is this achieved? Next, you can learn PHP's fuzzy query technology together.
Course 5948
Course Introduction:How to tune SQL according to execution plan under massive data? How does the mysql index system cope with massive data storage? How to design a mysql index with excellent performance under massive data Full analysis of clustered index and non-clustered index of mysql Must-ask nouns in mysql index interview: table return, index coverage, leftmost matching How to optimize indexes for specific SQL scenarios
2023-11-17 08:50:36 0 0 84
Implement filters and pagination using Laravel Eloquent
2023-11-12 18:42:35 0 1 310
How to solve /opt/lampp/bin/mysql.server: line 261: log_success_msg: command not found
2023-11-08 08:46:06 0 1 263
Prevent MySQL from reading when updating
2023-11-07 18:05:53 0 1 203
Is full count query really that slow on a large MySQL InnoDB table?
2023-11-07 15:52:43 0 2 236
Course Introduction:Analyze the implementation method of long polling. Nowadays, all major middlewares use the long polling data interaction method. Currently, the more popular ones are Nacos configuration center, RocketMQPull (pull mode) messages, etc., which all use long polling. Implemented in a square way. For example, in the Nacos configuration center, how can the server sense configuration changes and push them to the client in real time? Long polling and short polling When it comes to long polling, there must be something opposite to it. Let’s call it short polling for now. Let’s briefly introduce short polling: short polling is also a pull mode. It means that regardless of whether the server data has been updated or not, the client requests to pull data every fixed period of time. There may be updated data returned, or there may be nothing. If the configuration center uses this method,
2023-04-22 comment 0 1663
Course Introduction:In web development, polling request data is a very common technical method, which can continuously send requests to back-end services in order to obtain new data or status information. In the Vue framework, polling request data can be implemented through some simple technical means. This article will introduce how to use the Vue framework to implement polling request data. 1. Use the watch attribute of Vue. The watch attribute in Vue is used to monitor changes in certain data and perform corresponding operations. We can use the watch attribute to implement the function of polling request data. specific
2023-04-26 comment 0 2196
Course Introduction:Polling in Android is a key technology that allows applications to retrieve and update information from a server or data source at regular intervals. By implementing polling, developers can ensure real-time data synchronization and provide the latest content to users. It involves sending regular requests to a server or data source and getting the latest information. Android provides multiple mechanisms such as timers, threads, and background services to complete polling efficiently. This enables developers to design responsive and dynamic applications that stay in sync with remote data sources. This article explores how to implement polling in Android. It covers the key considerations and steps involved in implementing this functionality. Polling The process of periodically checking for updates and retrieving data from a server or source is called polling in Android. pass
2023-09-21 comment 0 978
Course Introduction:Comparative analysis of PHP real-time communication function and long polling Title: Comparative analysis of PHP real-time communication function and long polling Introduction: With the development of the Internet, real-time communication function has been increasingly widely used. In real-time communications, PHP is a commonly used back-end development language. There are two main common ways to implement real-time communication, namely polling and long polling. This article will conduct a comparative analysis of these two methods and provide corresponding code examples. Polling: Polling means that the front end continuously sends requests to the back end, and then the back end returns the corresponding data. This kind of
2023-08-10 comment 0 313
Course Introduction:With the high development of web applications, social networks and chat applications have become an indispensable part of modern life. These applications use real-time communication technology, and they require a reliable and efficient message push system to maintain real-time feedback and information updates from users. The emergence of Golang provides a better solution for real-time communication technology, and the most important technology is long polling. Long polling is a real-time messaging technology for web applications and servers. It has the characteristics of low latency and high reliability. in traditional applications
2023-05-15 comment 0 469