quickcur@yahoo.com wrote:
> Hi, for web site like yahoo map or google map, I guess the server needs
> to generate image at real time to response each request. What kind of
> special technique is need here? I mean, millions of people may make
> request at the same time, how to handle it? I guess generating image is
> very slow...

Not necessarily. Images are typically generated from pre-existing
ready-to-go parts, which require just assembling rather than
generating from scratch.

You can spread the load across different servers, too, e.g. by
doing the assembly on a proxy with a different machine for backend
database.

--
Nick Kew