DISQUS

Hello! Homo-Adminus Blog is using DISQUS, a powerful comment system, to manage its comments. Learn more.

Community Page

blog.kovyrin.net Jump to website »

Subscribe
- New Comments
Community
Top Commenters
- Scoundrel
  9 comments · 1 points
- dkubb
  3 comments · 1 points
- for you health
  3 comments · 1 points
- Johny
  2 comments · 2 points
- kuru
  2 comments · 1 points
Popular Threads
Recent Comments
- nice article! nice site. you're in my rss feed now ;-) keep it up
  5 months ago by for you health
  
  in Lighttpd Book from Packt - Great Thanksgiving Present
- nice article! nice site. you're in my rss feed now ;-) keep it up
  5 months ago by for you health
  
  in Dog-pile Effect and How to Avoid it with Ruby on Rails memcache-client Patch
- nice article! nice site. you're in my rss feed now ;-) keep it up
  5 months ago by for you health
  
  in ActiveMQ + Ruby Stomp Client: How to process elements one by one
- Top post. Thank you very much. :-)
  5 months ago by jamie
  
  in ActiveMQ Tips: Flow Control and Stalled Producers Problem
- Thanks for the info. May God have mercy on us all.
  5 months ago by Bulimia
  
  in Using Sphinx for Non-Fulltext Queries

Homo-Adminus Blog

Jump to original thread »

Dog-pile Effect and How to Avoid it with Ruby on Rails memcache-client Patch

Started by Scoundrel · 9 months ago

We were using memcache in our application for a long time and it helped a lot to reduce DB servers load on some huge queries. But there was a problem (sometimes called a “dog-pile effect”) - when some cached value was expired and we had a huge traffic, sometimes too man ... Continue reading »

11 comments

Chris
1 year ago

If you're using the cache_fu Rails plugin, you can use reset_cache instead of expire_cache to avoid the 'dog-pile' effect.

reply

Scoundrel
1 year ago

2Chris: Of course, but what if your data has expired because it was too old?

reply

Noob
1 year ago

You can do this easily without doubling every lookup (and without using more memcached space):

http://www.socialtext.net/memcached/index.cgi?f...

reply

Johny
6 months ago

not sure how that would work ... or how it will fit in

reply

Guillermo Álvarez
1 year ago

For some sites that i admin, and for some zones of it, I usually update the cache just for localhost. All the content coming from "!local_request?" show cache. Then in a simple crontab on the same machine will wget some urls to update cache. I know it is very monkey, but it run nice.

reply

Replica handbags
6 months ago

This is one of very few blogs that was worth the read, a great insight. Your website is very nicely designed, I have already bookmarked it. Thank you.

reply