构建可扩展的微博系统

构建可扩展微博架构 Tim Yang 新浪微博技术架构师

博客 ,[object Object],[object Object],[object Object],[object Object],[object Object]

微博 ,[object Object],[object Object],[object Object],[object Object]

信息聚合 ,[object Object],[object Object],[object Object]

Push ,[object Object],[object Object],[object Object],[object Object],[object Object]

Push(Figure) User A UpdateAction Inbox (Append to 1’s home timeline) Inbox (Append to 2’s home timeline) Inbox (Append to 3’s home timeline) Followers of User A = 1, 2, 3

Push ,[object Object],[object Object]

Pull ,[object Object],[object Object]

Pull User I Get home_timeline Outbox (statuses sent by A) Outbox (Statuses sent by B) Outbox (Statuses sent by C) User I’s Following List = A, B, C

[object Object],[object Object]

请求量 ,[object Object],[object Object],[object Object]

IO 瓶颈 ,[object Object],[object Object]

后果 ,[object Object],[object Object],[object Object],[object Object]

异步设计 ,[object Object],[object Object],[object Object]

MQ products ,[object Object],[object Object],[object Object],[object Object]

Memcacheq ,[object Object],[object Object],[object Object],[object Object]

避免单点故障 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MQ 方式通用的优点 ,[object Object],[object Object],[object Object],[object Object],[object Object]

使用 MQ 原则 ,[object Object]

[object Object],[object Object],http://t.sina.com.cn/pub/star#a_ty

[object Object],[object Object],[object Object]

容量问题 ,[object Object],[object Object],[object Object],[object Object],[object Object]

单点问题 ,[object Object],[object Object],[object Object],[object Object]

Consistent hash ,[object Object],[object Object],[object Object]

Read-through and Write-through ,[object Object],[object Object],[object Object],[object Object]

Evictions 问题 ,[object Object],[object Object],[object Object]

如何避免 evictions ,[object Object],[object Object],[object Object]

Multiget 问题 ,[object Object],[object Object]

地理分布 ,[object Object],[object Object],[object Object],[object Object],[object Object]

数据地理分布原理 ,[object Object],[object Object],[object Object],[object Object],[object Object]

地理分布的方案 ,[object Object],[object Object],[object Object]

以新浪微博开放平台为例 ,[object Object],[object Object],[object Object],[object Object],[object Object]

解决方案： Sina App Engine ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

构建可扩展的微博系统

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