I need RAM memory and cache should be cleared in mysql thru cron every 30 mins once.
Every 3 hours once my website is getting slow and RAM memory and cache getting 50% full.
By running this query via putty memory getting clear. I set a cron but it is not running.
Query to run in cron : echo 3 > /proc/sys/vm/drop_caches
Apply for the experienced person only.
Apache Server also to be maximum optimized.