Redis高并发的一个小问题
RT,现在有个客户报名小功能,要求:每个客户只能报名一次;
由于客户量大,预计峰值并发到达 1W/S
,那么问题来了,使用 Redis
如何实现该需求?
能上代码的朋友感激不尽!
回复内容:
RT,现在有个客户报名小功能,要求:每个客户只能报名一次;
由于客户量大,预计峰值并发到达 1W/S
,那么问题来了,使用 Redis
如何实现该需求?
能上代码的朋友感激不尽!
hincrby即可解决
数据存储:将报名信息保存到一个hash结构中,hash里面的key使用用户id,value是报名次数
报名:直接使用hincrby命令,将对应的userId的value+1,如果之前没报名,返回1,大于1表示已报过名。
并发问题:再大的并发量这个方案都不会有任何问题,因为可以重复提交报名信息,而且每个步骤都是原子性的,hincrby的性能接近O(1),效率也不低,如果需要前端提示重复报名,可根据hincrby返回值是否>1来判断。
redis有事务功能,可以参考一下
就是正常的逻辑添加,读取,更新逻辑。
既然并发较大那你要把redis,nginx,linux进行配置,首先让他们物理配置上能承受1w并发。
其实也没什么特别的,如果你是nginx还可以进行优化。
redis 的读写性能,官网说明可以10w+每秒,实际的读写性能可能没有这么高,但是完全符合你的需求的
可以对每个公司设置一个key,使用redis
set
方法即可,存在的key就直接覆盖

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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

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











PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip
