Flickr Platform
- PHP
- MySQL
- Shards
- Memcached for a caching layer.
- Squid in reverse-proxy for html and images.
- Linux (RedHat)
- Smarty for templating
- Perl
- PEAR for XML and Email parsing
- ImageMagick, for image processing
- Java, for the node service
- Apache
- SystemImager for deployment
- Ganglia for distributed system monitoring
- Subcon stores essential system configuration files in a subversion repository for easy deployment to machines in a cluster.
- Cvsup for distributing and updating collections of files across a network.
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