Home Backend Development PHP Tutorial 问下thinkphp 的memcache 同步更新有关问题

问下thinkphp 的memcache 同步更新有关问题

Jun 13, 2016 pm 12:21 PM
key memcache nbsp thinkphp

问下thinkphp 的memcache 同步更新问题

本帖最后由 u013366173 于 2015-06-06 12:15:37 编辑 网上有了解到thinkphp 的memcache的设置方法,都是介绍了查询的时候先判断key值是否存在,如存在,直接调用数据,不存在再连接数据库取数据
那么问题来了thinkphp 的memcache 如何数据同步呢,就是数据更新删除修改的时候怎么样memcache缓存也同时更新呢?是不是要在系统增删改函数里删除相对应的memcache的key ,可是这个key 不知道怎么对应。。求思路
用触发器的话 感觉也好麻烦呀,有点乱。
------解决思路----------------------
为什么没有人介绍当表出现删除、修改时如何对 memcache 进行相应的操作呢?
因为那是不现实的,所以都假定对表的删除、修改是不会发生的。也就是说 memcache 在实际运用中当做数据缓存使用并不普遍。
更多的是作为数据共享出现的,比如你需要一个超超全局的载体,在程序间、用户间传递数据

为什么说是不现实的呢?
因为内存远比硬盘小,你不可能按记录将数据保存到  memcache。如果可能,那就不要数据库了
所以  memcache 中只是保存了常用查询的结果,并从查询串生成 key 以便识别
这就是说  memcache 中是以 查询 为单位保存数据的
当 删除、修改 发生时,你基本不可能从 查询 简单的判断出,这个 删除、修改 是否影响到该查询(查询有很多,一一实际查询一下是不现实的)
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

10 Ways to Adjust Brightness on Windows 11 10 Ways to Adjust Brightness on Windows 11 Dec 18, 2023 pm 02:21 PM

Screen brightness is an integral part of using modern computing devices, especially when you look at the screen for long periods of time. It helps you reduce eye strain, improve legibility, and view content easily and efficiently. However, depending on your settings, it can sometimes be difficult to manage brightness, especially on Windows 11 with the new UI changes. If you're having trouble adjusting brightness, here are all the ways to manage brightness on Windows 11. How to Change Brightness on Windows 11 [10 Ways Explained] Single monitor users can use the following methods to adjust brightness on Windows 11. This includes desktop systems using a single monitor as well as laptops. let's start. Method 1: Use the Action Center The Action Center is accessible

How to turn off private browsing authentication for iPhone in Safari? How to turn off private browsing authentication for iPhone in Safari? Nov 29, 2023 pm 11:21 PM

In iOS 17, Apple introduced several new privacy and security features to its mobile operating system, one of which is the ability to require two-step authentication for private browsing tabs in Safari. Here's how it works and how to turn it off. On an iPhone or iPad running iOS 17 or iPadOS 17, Apple's browser now requires Face ID/Touch ID authentication or a passcode if you have any Private Browsing tab open in Safari and then exit the session or app to access them again. In other words, if someone gets their hands on your iPhone or iPad while it's unlocked, they still won't be able to view your privacy without knowing your passcode

What does the identity attribute in SQL mean? What does the identity attribute in SQL mean? Feb 19, 2024 am 11:24 AM

What is Identity in SQL? Specific code examples are needed. In SQL, Identity is a special data type used to generate auto-incrementing numbers. It is often used to uniquely identify each row of data in a table. The Identity column is often used in conjunction with the primary key column to ensure that each record has a unique identifier. This article will detail how to use Identity and some practical code examples. The basic way to use Identity is to use Identit when creating a table.

How to run thinkphp project How to run thinkphp project Apr 09, 2024 pm 05:33 PM

To run the ThinkPHP project, you need to: install Composer; use Composer to create the project; enter the project directory and execute php bin/console serve; visit http://localhost:8000 to view the welcome page.

There are several versions of thinkphp There are several versions of thinkphp Apr 09, 2024 pm 06:09 PM

ThinkPHP has multiple versions designed for different PHP versions. Major versions include 3.2, 5.0, 5.1, and 6.0, while minor versions are used to fix bugs and provide new features. The latest stable version is ThinkPHP 6.0.16. When choosing a version, consider the PHP version, feature requirements, and community support. It is recommended to use the latest stable version for best performance and support.

How to run thinkphp How to run thinkphp Apr 09, 2024 pm 05:39 PM

Steps to run ThinkPHP Framework locally: Download and unzip ThinkPHP Framework to a local directory. Create a virtual host (optional) pointing to the ThinkPHP root directory. Configure database connection parameters. Start the web server. Initialize the ThinkPHP application. Access the ThinkPHP application URL and run it.

How to use Memcache in PHP development? How to use Memcache in PHP development? Nov 07, 2023 pm 12:49 PM

In web development, we often need to use caching technology to improve website performance and response speed. Memcache is a popular caching technology that can cache any data type and supports high concurrency and high availability. This article will introduce how to use Memcache in PHP development and provide specific code examples. 1. Install Memcache To use Memcache, we first need to install the Memcache extension on the server. In CentOS operating system, you can use the following command

Which one is better, laravel or thinkphp? Which one is better, laravel or thinkphp? Apr 09, 2024 pm 03:18 PM

Performance comparison of Laravel and ThinkPHP frameworks: ThinkPHP generally performs better than Laravel, focusing on optimization and caching. Laravel performs well, but for complex applications, ThinkPHP may be a better fit.

See all articles