Originally Posted by Klen

Memcached should keep site up as well as it's cache , tho did not tried downtime scenario so cant tell for sure. Originally when i was doing my tube script, i made cache system based on file storage, where i would save each output as html file and load that on every next load. But then i read somewhere how is better to use system like memcached because memcached is using memory as storage, and memory is faster then hard drive so i switched to memcached, and loading cached/saved pages were indeed faster, plus memcached have ability to automatically detect if content of query changed, while with my previous solution that had to be done manually.