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算法 关于帖子热度排行排序这样的操作

clc3123 · January 14, 2012 · Last by josh_chen_jia replied at January 14, 2014 · 6472 hits

是数据库读取时实时按照算法计算的吗？或者是其它进程定时对帖子进行热度值计算并且更新帖子的相关 field？

有关的文章：hacker news 的排序 http://amix.dk/blog/post/19574

5 likes
No reference
Rei #1 January 14, 2012

简单点的可以用数据库查询时计算然后 cache 下来

xdite #2 January 15, 2012

https://gist.github.com/1391980 # stackoverflow & reddit algorithm

clc3123 #3 January 15, 2012

#2 楼 @xdite Reddit 算法，确实很棒！ 但是我这个需求偏偏跟系统时间相关，要是算类型，应该和 hackernews 的一类。。。

josh_chen_jia #5 January 14, 2014

阮一峰写了一个基于用户投票的排名算法的系列博客 (Includes Hacker News, Delicious, Reddit, and Stack Overflow)，有兴趣的同学一定要看 :D http://www.ruanyifeng.com/blog/2012/02/ranking_algorithm_hacker_news.html

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