Data persistence methods in PHP
In recent years, with the development and popularization of the Internet and the increase in Web applications, data persistence has become particularly important. In traditional web applications, data is usually stored and managed using relational databases, such as MySQL, PostgreSQL, etc. However, as web application development becomes increasingly complex and diversified, problems caused by database management are becoming more and more prominent, such as:
- Database read and write speed limit formula
- Concurrency processing capability of database
- Cost and difficulty of database maintenance
Therefore, some new technologies have emerged, the most popular of which is to store data in memory Caching technologies, such as Memcached and Redis, etc. In addition, there is a technology called data persistence, which seems to be able to overcome many problems caused by database management and improve the reliability and performance of web applications to a certain extent.
Data persistence is an in-memory database technology that stores data in memory, but the data can be restored after the server is shut down or fails. The main advantages of data persistence technology are as follows:
- Reduce disk IO
- Storage and management independent of external database
- Greatly improves response Speed, especially when reading a large amount of data
Data persistence technology is generally based on binary trees or B-trees, which is called "data structure persistence". In data structure persistence, we can modify the data structure while retaining the previous state. The advantages of this technology are data history and rollback, etc., as well as data comparison between multiple versions. Of course, this technique requires additional storage space due to the historical nature of the data. Therefore, compared with basic data structures, the persistence of data structures requires richer storage space and higher storage technology.
In PHP, there is a widely used data persistence method called "PHP Poisson memory hash table". Its implementation is based on the "Poisson distribution" algorithm, which can store and retrieve data efficiently without reading or writing from the hard disk.
PHP Poisson in-memory hash table was developed in 2002 by Dr. Andi Gutmans and his colleague Zeev Suraski. It implements a fast hash table by porting the object engine from JavaScript to PHP. PHP Poisson in-memory hash table provides a very powerful caching technology, which allows to store data in memory and easily retrieve and update them without accessing the hard disk or database.
When using the PHP Poisson memory hash table, we need to set some parameters, such as the size of the hash table, load factor, expansion factor, etc. These parameters mainly affect the performance and memory utilization of hash tables. In PHP, we can use extensions such as memcache and APC to implement PHP Poisson memory hash tables and other aspects of caching technology.
In short, data persistence is a very useful technology that can significantly improve the performance and reliability of web applications. In PHP, the PHP Poisson in-memory hash table is a very popular and efficient implementation that can easily store data in memory and perform fast retrieval and update operations. If you are developing a web application and want to improve its performance and reliability, PHP Poisson in-memory hash tables are a technology well worth trying.
The above is the detailed content of Data persistence methods in PHP. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
