Maximum SQL Queries per page [closed]

Answer 1

The most important thing is not the number, but the expense of the query...

Running 100 SELECT name FROM foo WHERE id = 1 LIMIT 1 will be a whole lot better than running 1 of the following:

SELECT *
    FROM foo AS a
    JOIN bar AS b
    JOIN car AS c
    WHERE a.col LIKE '%f%' OR b.col LIKE '%b%' OR c.col LIKE '%b%'

So don't fret the number unless it's absurd (Over 100 is high. Several thousand are absurd)... Don't forget that you can enable MySQL's Query Cache... So even if you are hitting a lot of queries per second, as long as there are not a ton of updates, most of them will be directly cache results..

Answer 2

A possibly easier, and almost as effective method of optimization would be to batch queries where it is possible. This way you're making fewer round-trips to the database server while keeping your existing logic (mostly) intact.

Answer 3

The total number of hits to your database is also proportional to the number of page views. So if page views * queries per page is more than the capacity of your database, then you've got a problem. Obviously traffic varies very widely from site to site, as does database capacity, so there really can't be a number to aim for.

Answer 4

As recursive mentioned, there is no magic number. Far too many variables. Such as your database server specs. Clearly the better the server the more queries you can run.