Mysql'where子句'用长表？

Question

I have designed a website like bit.ly, but a bit different. Written in php with mysql. When I was running it at localhost, everything seemed to work fine, pages loaded in 4.5 milliseconds, and I was as happy as a clam.

I uploaded it to the server, and users started surfing the website, and using it. Everything seemed to work fine untill the main table started reaching millions of rows.

The table is one million of rows length right now (it has to be that way), and growing. The pages that needs that table take 500ms to load... The mysql query is the next:

select link
from table
where kind = $kind and kind_idd = $kind_idd and live = 1;

It can return more than 1 link, in fact, it usually returns between 10-50 links.

The problem is that where clause. I am sure that mysql should have something to make it faster. I have been asking google and I found indexes, keys, and so on. But I couldn't find a website that explained it for dummies.. If someone could give me an example to make this thing go fast, I would really appreciate it.

Thank you!

Answer 1

Try using the mysql explain plan so that you can see what is happening.

You probably need to ensure that you have indexes on kind, kind_idd and live see http://dev.mysql.com/doc/refman/5.0/en/create-index.html