How many MySQL queries should I limit myself to on a page? PHP / MySQL

Question

Okay, so I\'m sure plenty of you have built crazy database intensive pages...

I am building a page that I\'d like to pull all sorts of unrelated database informati

Answer 1

Every query requires a round-trip to your database server, so the cost of many queries grows larger with the latency to it.

If it runs on the same host there will still be a slight speed penalty, not only because a socket is between your application but also because the server has to parse your query, build the response, check access and whatever else overhead you got with SQL servers.

So in general it's better to have less queries.

You should try to do as much as possible in SQL, though: don't get stuff as input for some algorithm in your client language when the same algorithm could be implemented without hassle in SQL itself. This will not only reduce the number of your queries but also help a great deal in selecting only the rows you need.

Piskvor's answer still applies in any case.