How to solve leverage browser caching issue for website while checking pingdom report for speed test?

Answer 1

didnt knew pingdom had to Google it, it's a set of services for monitoring interactions with ur website,

if it's prevention u seek
https://stackoverflow.com/questions/13640109/how-to-prevent-browser-cache-for-php-site

if it's leverage u seek
https://stackoverflow.com/questions/5595790/leverage-browser-caching