对于1小时内(主要是前20分钟)访问量 20K pv 的一个学校的选课系统,应该怎样设计呢?
对于传统的LAMP构架跑在阿里云ECS上,需要购买什么样的配置?
2核心 + 2G内存 + 6M带宽 够用么?
软件设计方面又有哪些优化方法和新思路呢?
(另外,问一下如何根据pv量和平均网页大小计算带宽需求呢?)
回复内容:
对于1小时内(主要是前20分钟)访问量 20K pv 的一个学校的选课系统,应该怎样设计呢?
对于传统的LAMP构架跑在阿里云ECS上,需要购买什么样的配置?
2核心 + 2G内存 + 6M带宽 够用么?
软件设计方面又有哪些优化方法和新思路呢?
(另外,问一下如何根据pv量和平均网页大小计算带宽需求呢?)
首先算出来秒并发量10K/20/60~=9,对于9req/s
6M的带宽对于每个请求基本是6M/8/9~=85K,粗略来说每个请求能分到的平均带宽是85K/s,
初次访问需要加载的数据量很大(几百K级别吧),但是对于之后的访问,(css和js都已经浏览器缓存了)大家都是简单的刷新页面的话每次返回的数据也就是5~20K的级别吧.(html去掉全部注释+gz).对于描述的需求并发6M的带宽是完全满足的(不过选课的时候20min才10K的pv...学生不是很多啊...)
不过8req/s对于lamp系统来说内存可能会比较吃紧,1.5G,系统的,mysql的,apache的...
估算的话这样差不多吧..
只能说完全够用。这个没有一个什么标准。
慎重,如果自己的方案本来就不怎么成熟,那就用商业解决方案吧,选课、成绩、绩点等数据很重要,而且数据也要防止被篡,你也不想崩溃后跑到档案室去一个个手动录取成绩吧。。。还有就是做选课系统的童鞋能不能都做好一点,每次选课都恼火。

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7


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

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

WebStorm Mac version
Useful JavaScript development tools

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

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.