Strategy
A very entertaining and somewhat educational article on IBM Poopheads say LAMP Users Need to "grow up". The physical three tier architecture turns out to be the root of all evil and shared nothing architectures brings simplicity and light. In the comments Simon Willison makes an insightful comment
Product
Tugela Cache is a cache system like memecached, but instead of storing data just in RAM, it stores data in the file system using a b-tree. You trade latency in order to have a very large cache. It's useful for sites that have caching requirements that exceed their
Strategy
This scalability strategy is brought to you by Erik Osterman: My recommendations for anyone dealing with explosive growth on a limited budget with lots of cachable content (e.g. content capable of returning valid expiration headers) is employ a reverse proxy as mentioned in this article. In the last week,
Product
Memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Danga Interactive developed memcached to enhance the speed of LiveJournal.com, a site which was already doing 20 million+ dynamic page views per day
Product
eAccelerator is a free open-source PHP accelerator, optimizer, and dynamic content cache. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load