Posted by nospammmer on 09/15/05 17:08

Hello group,

I have a rather general but interesting inquiry that is related to PHP
and I hope this is the appropriate place to post it.

I'm looking for a way to improve dramatically the performance of my PHP
application. The application is getting slow as it is taking more load.
It is performing a very high number of queries to a database, and I
believe that this is taking up most of the ressources.

I'm trying to figure out how I could cache the content of the database
and prevent that many queries to be performed.

What I would like to do is cache all the content of the database in
memory, so that I could access it directly through my PHP application
without querying the database and saving precious ressources.

The database is quite small, 15 - 20 mB and it's size is constant (it
does not get bigger over time). 92% of the queries are SELECT, only 8
percents are UPDATE, DELETE and INSERT.

So, my question is, is it possible and recommandable to place 20mB of
data in shared memory in order to prevent queries to the database? (all
updates, deletes and inserts are performed both in the database as well
as in memory)

Or would I be better to place a copy of the database on a ramdrive?

Other info:
I have a server which runs both the PHP application and the MySQL
database. It has 1GB of RAM. The database receives 250 queries / sec.

Thank you in advance for your kind help

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