Support "if modified since" header (SEO)
See here: https://varvy.com/ifmodified.html
It will help with bandwidth as google wont have to download each page every time it crawls. It will only crawl the updated pages and therefore save bandwidth on servers and increase seo too.
Saboor Ahmad commented
Very good changings it is actually people want for some reference I have shortlist one link that would be more help you.
Glad to know about these amazing modifications for perfect growing scenario. My friend hired one of the result oriented seo company from http://visiblefactors.com/seo-consulting/ online and increased the leads within few days. Genuine traffic and prices are praiseworthy. Got to learn few more ideas of using large set of keywords for adhesive response.
Peter Wilkinson commented
Using a web server that supports the If Modified Since header is recommended, and will result in less bandwidth being used by search engine crawlers.