shad.cc

That's it! This whole blog is cached and directly delivered by CirruxCache (only static files were cached before). My origin server is a tiny eeebox connected through my personal ISP.

So this configuration is a good challenge to offload my tiny web server as much as possible.

I think this is a good opportunity to show an example of a configuration which is a little bit more evolved.

The point is, I cannot set the same cache TTL for the whole website, and actually, I want to cache several websites...

# URL mapping
urls = {}
 
base = (
                '/_admin/(.*)', 'Admin',
                '/_store/(.*)', 'Store',
                '/_cron/(.*)', 'Cron'
                )
 
urls['default'] = base + (
                '(/debug/.*)', 'Debug',
                '/(.*)', 'Root'
                )
 
urls['www.shad.cc'] = base + (
                '(/themes/.*)', 'Blog_Static',
                '(/plugins/.*)', 'Blog_Static',
                '(/admin/.*)', 'Blog_Forward',
                '(/.*)', 'Blog_Page'
                )
 
urls['www.zaphod.eu'] = base + (
                '(/pub/.*)', 'Zaphod_Redirect',
                '(/.*)', 'Zaphod'
                )
 
# still supporting the old config
 
urls['cdn.shad.cc'] = base + (
                '/blog(/.*)', 'Blog_Static',
                '/(.*)', 'Root'
                )
 
urls['cdn.zaphod.eu'] = base + (
                '(/admin/.*)', 'Zaphod',
                '/(.*)', 'Root'
                )
 
# POP definition
# You can define and configure your Point Of Presence
 
class Blog_Static(cache.Service):
        origin = 'http://orig.shad.cc'
        forceTTL = 2592000 # 1 month
        ignoreQueryString = True
        forwardPost = False
        allowFlushFrom = ['x.x.x.x']
 
class Blog_Page(cache.Service):
        origin = 'http://orig.shad.cc'
        forceTTL = 3600 # 1 hour
        ignoreQueryString = True
        forwardPost = True
        allowFlushFrom = ['x.x.x.x']
 
class Blog_Forward(forward.Service):
        origin = 'http://orig.shad.cc'
 
class Zaphod(cache.Service):
        origin = 'http://orig.zaphod.eu'
        forceTTL = 2592000 # 1 month
        ignoreQueryString = True
        forwardPost = False
        allowFlushFrom = ['x.x.x.x']
 
class Zaphod_Redirect(redirect.Service):
        origin = 'http://zaphod.eu'
 
# !POP

I think this configuration is enough readable to avoid any explanation. However, do not hesitate to leave any comments.

Finally, I created a google groups to centralize all help requests. So if you need help, go to http://groups.google.com/group/cirr... or send an email to cirruxcache 'at' googlegroups 'dot' com.

CirruxCache 0.2.2 has just been released. It contains some bugfixes (thanks to Devattas to have reported errors on Datastore latency). Webpy has been updated to the last version.

I have also updated the documentation, especially I brought more details on Point of Presence configuration and usage of cron tasks for garbage collection.

Finally, some of the users reported me that there is a real problem with the cached object size limit (currently 1MB). I am working on the solution, I will take advantage of the new Blobstore service on AppEngine to store objects. Maybe I will keep the Datastore only for meta-data. This solution will raise the cache object limit to 50MB.

Stay tuned