Optimizing my mysql statement! - RAND() TOO SLOW

Question

So I have a table with over 80,000 records, this one is called system. I also have another table called follows.

I need my statement to randomly select records from

Answer 1

You can generate some pseudo random value based on the ids and the current time:

ORDER BY 37*(UNIX_TIMESTAMP() ^ system.id) & 0xffff

will mix bites from the id, and then will take only the lowest 16.