On Wed, Aug 22, 2012 at 2:26 PM, noiv <noi...@gmail.com> wrote: > > There are about new 3200 tiles/images every day. The problem seems not to be > a few users request same tile every minute or so.
The most helpful stats would be: * How many tile requests per day total? * How many unique tile requests per day? * What is the average size of a tile? > Maxcdn currently offers first TB for free and next 10 for 700$. But, since > today GoogleMapsMania links to and new referrer are popping up fast. I > calculate 1MB per visitor, that's just another receipt for bankruptcy in > case of getting slashdotted. Maybe you can get Exxon to sponsor it ;-) I presume you have already decreased the jpg quality as much as you are willing? The first thing I notice when looking at your site is that you are not caching anything. Not even in the browser - it refetches every single time. I get this: Cache-Control:private Cache-Control:must-revalidate, post-check=0, pre-check=0 Switch to: Cache-Control: public, max-age=3600 Make the age as long as you are willing. If the imagery changes every day at midnight, you could use an Expires header to make it expire at a particular time. > I don't get CloudFlare. The Wiki is full of dead links and a change to the > DNS records would solve everything? How do devs access the site then? But > they promise to not charge for bandwidth. If all is true is seems perfect. > I've started to google detailed instruction. After you have fixed your cache headers, this is going to be your best bet. CloudFlare is a reverse proxy. What makes them a little different is that they handle DNS for you so it's trivial to turn on and off the proxy. I actually use their DNS service for domains which don't use CloudFlare's proxy because their DNS service is free and the UI is not retarded (like, say, Rackspace's). Set up a copy of your DNS records in CloudFlare. Make sure they are correct. Then switch authority for your domain to CloudFlare. You can turn on/off the proxy with a buttonclick; this causes DNS to resolve either through CloudFlare's servers or directly to yours (ghs.google.com). Keep in mind that it takes a few minutes for DNS changes to propagate. By the way, right now your app is making each tile request to ice-map.appspot.com which gets 302 redirected to lance-modis.eosdis.nasa.gov. This slows things down even more. > Thanks again. I now believe there are more options to consider and shutting > down the site is no longer on top of the list. #1: Make tile requests to the correct URL #2: Add a correct caching header #3: Try CloudFlare If that doesn't dramatically improve things, come back for more advice :-) Jeff -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
