Question

I have a table in my database :

And I’m using MySQL to insert/update/create info however the time it takes to execute queries is slow example:

First when a user runs my app it verifies they can use it by retrieving all IPs from the db with

SELECT IP FROM user_info

Then using a while loop if the IP is in the db do another query:

"SELECT Valid FROM user_info WHERE IP='".$_SERVER['REMOTE_ADDR']."'""

If Valid is 1 then they can use it otherwise they can’t however if their IP is not found in the db it creates a new entry for them using

"INSERT INTO user_info (IP,First) VALUES ('".$_SERVER['REMOTE_ADDR']."','".date("Y/m/d") ."')")"

Now this first script has finished it accesses another – this one was supposed to update the db every minute however i don’t think i can accomplish that now ; the update query is this:

"UPDATE user_info SET Name='".$Name."', Status='".$Status."', Last='".$Last."', Address='".$Address."' WHERE IP='".$_SERVER['REMOTE_ADDR']."'")"

All together it takes average 2.2 seconds and there’s only 1 row in the table atm

My question is how do i speed up mysql queries? I’ve read about indexes and how they can help improve performance but i do not fully understand how to use them. Any light shed on this topic would help.

Nubcake

Answer 1

Indexes will become very important as your site grows, but they won’t help when you have only one row in your table and it cannot be the reason why your queries take so long. You seem to have some sort of fundamental problem with your database. Maybe it’s a latency issue.

Try starting with some simpler queries like SELECT * FROM users LIMIT 1 or even just SELECT 1 and see if you still get bad performance.