In Python, thread safe does not mean fork safe
We discovered this in a not so easily reproducible way. Here at Mahalo we use this wonderful distributed task queue called Celery. Upon restarting the celeryd server, rarely (until recently) and only...
View ArticleReset file's modification time to their birth time
NOTE:This only works for FreeBSD. This will change the modification time (ls -l) of the current directory and all files and directories under it back to their "birth time" (creation time). If you want...
View ArticleNginx modules for a memcached page cache cluster
Nginx already has a neat module included with it to proxy requests to a memcached server (memcached_pass). Combine that with the upstream round robin load balancer, you have the beginnings of a...
View ArticleApache Cassandra FreeBSD rc.d script
We are a FreeBSD shop, so naturally we run our Apache Cassandra cluster on it. Unfortunately, there isn't an rc.d script for it. Using cassandra/bin/cassandra -p /var/run/cassandra.pid has been working...
View ArticleHow to dump memcache key/value pairs fast
Recently we migrated our memcached cluster to a new larger one. This needed to be done mostly for reliability and speed, but it's also nice being able to have access to new stats like 'reclaimed' in...
View ArticleMySQL 5.5 Homebrew Formula
I recently switched to a 27" iMac workstation running Snow Leopard from Ubuntu 10.10 (Maverick Meerkat). The resident Mac fanbois suggested Homebrew over Fink and MacPorts. At first I didn't heed their...
View Articlememcache-top patch to see curr_items
I stumbled upon memcache-top in the Homebrew Formula repository. It's a neat little Perl application that aggregate stats from a memcached cluster and displays it in a nice little table. I like to use:...
View ArticleTips.js - Lesson 1: For-in Caveats
JS has several different looping statements, many of which we know and love: for, while, and do-while. JS has a sort of for-each statement, which we like to call the for-in statement, but the caveat...
View ArticleJacob Kaplan-Moss at Mahalo
This post is really late in coming. In trying to get Mahalo 4 launched on time, a few things got pushed off, so here I am trying to catch up. Way back in November (I think), Jacob Kaplan-Moss visited...
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Deploying a Video Sitemap
If you've ever considered implementing a video sitemap, you''ve probably gone throught the same thought process we did. First, "what's a video sitemap?" then "should we have one?" followed by "how come...
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