对于改造大学的选课系统,硬件上有什么要求?几兆带宽?
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。

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