How to Leverage Browser Caching in Blogger

Is it possible to set expiry of blogger content or simply leverage browser caching. Is it possible to increase cache time of plusone.js to more than 30 minutes. How do I Leverage Browser Caching without use of .htaccess. These are the questions of every blogger who care about the speed of their blog. I also in search of such questions, I made these query about 50 times and visited about 100 blogs