php：缓存 mysql 结果 x 分钟

Question

I build a block and it turns out to make a huge load on mysql and making tables to lock. how can i cache mysql results into file or memory with php for X minutes?

$result = mysql_query("SELECT * FROM dle_post WHERE (approve='1')  
                        AND (category LIKE 'something' $all_movies)
                        AND date >= '$monthagodate'  
                        AND date < '$curdate' + INTERVAL 1 day  
                        ORDER BY date DESC LIMIT $more,$number_of_topics");

Answer 1

Use MySQL query cache if your table data is not being updated frequently. Otherwise use memcached .

Answer 2

Most of the time caching is not needed. And, in cases like yours, it will be just a crutch, not a proper solution.

If one created a query that makes a huge load on server, one have to optimize that query, not cache its results.

Run explain on this query and find out why it doesn't use indexes (if any).