Monitoring cache usage?

[Roy Smith]

What tools exist to monitor django's cache usage?  I'd like to see things like number of keys stored, total amount of memory used, hit rates broken down by key prefix, that sort of thing.

We're using django.core.cache.backends.memcached.MemcachedCache.

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Roy Smith
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[Cal Leeming [Simplicity Media Ltd]]

A quick search on Google found the following:

https://github.com/dlrust/python-memcached-stats 

https://developers.google.com/appengine/docs/python/memcache/clientclass 

http://code.google.com/p/memcache-top/ 

http://www.mysqlperformanceblog.com/2008/11/26/a-quick-way-to-get-memcached-status/ 

If you use Cacti, you could also use this:

http://forums.cacti.net/about14605.html

There are also other commercial services that will monitor this for you, such as Server Density.

Cal

On Wed, Jun 20, 2012 at 4:53 PM, Roy Smith <[hidden email]> wrote:

What tools exist to monitor django's cache usage?  I'd like to see things like number of keys stored, total amount of memory used, hit rates broken down by key prefix, that sort of thing.

We're using django.core.cache.backends.memcached.MemcachedCache.

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Roy Smith
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[Cal Leeming [Simplicity Media Ltd]]

Oh also - I'm not entire sure it's possible to break down hits based on key prefix, at least easily.

You might be able to analyse each one of the data slabs/pages/chunks, see which keys are inside, and relate that back to the number of hits against it.

The following article goes into more detail:

http://www.mikeperham.com/2009/06/22/slabs-pages-chunks-and-memcached/ 

On Wed, Jun 20, 2012 at 4:53 PM, Roy Smith <[hidden email]> wrote:

What tools exist to monitor django's cache usage?  I'd like to see things like number of keys stored, total amount of memory used, hit rates broken down by key prefix, that sort of thing.

We're using django.core.cache.backends.memcached.MemcachedCache.

---
Roy Smith
[hidden email]

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