How can I achieve efficiency and speed for high traffic dating web site

[PD]

I am currently making a dating website.

I want to have some information on how to structure the database and
the php files so that I can achieve speed and efficiency.

Can some one please give me suggestions and point me to references
where I can get this information.

[Diogo]

I found these really interesting:

http://talks.php.net/show/hpp/

http://www.niallkennedy.com/blog/uploads/flickr_php.pdf

PD escreveu:

[clops]

I usually go through a lot of caching on all layers of the
architechture

Cache DB data (triggers are wonderful for that purpose)
Cache Business Logic (the code) - TurckMMCache or Zend Accelerator do
the job well
Cache Display Data - create static HTML content as much as possible
Use Ajax in order to prolong cache's life as long as possible