Ticket #121 (closed 优化: fixed)

Opened 14 years ago

Last modified 13 years ago

减少应用负担的优化措施

Reported by: chenchongqi Owned by: yuanhuoqing
Priority: major Milestone:
Component: 产品库 Version: 报价库5.0
Keywords: Cc:
Due Date:

Description (last modified by chenchongqi) (diff)

现象

  • 从3月份以来，报价库前台的应用开始出现重启，重启负载高等现象，尤其是近两个月趋向严重：

 http://rdtrac.pc.com.cn/itproduct/ticket/54
 http://rdtrac.pc.com.cn/itproduct/ticket/115
 http://rdtrac.pc.com.cn/itproduct/ticket/118
 http://rdtrac.pc.com.cn/itproduct/ticket/119
 http://rdtrac.pc.com.cn/itproduct/ticket/120
 http://rdtrac.pc.com.cn/itproduct/ticket/127

  • squid缓存命中率降低至30%

分析

  • 本质原因是应用端的压力过大，像el表达式、lru缓存等等虽然也有使用不当的原因，但在正常使用情况下是逼不出来这种现象的。
  • 今年以来前台功能不停增加，各种ssi数量也增加，直接导致前台逻辑复杂，缓存命中率降低，压力导入到应用端。

处理

  • 在整个product域名上新增了3台共6g的suqid，减少后端压力
  • nginx设置终端页的超时时间从15分钟调整到1小时
  • 考虑ssi的分类处理
  • 升级r系统

Change History

comment:1 Changed 14 years ago by chenchongqi

  • Description modified (diff)

comment:2 Changed 14 years ago by chenchongqi

  • Description modified (diff)

comment:3 Changed 13 years ago by chenchongqi

  • Status changed from new to closed
  • Resolution set to fixed
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