Hi Marcelo, The obvious optimisation would be to cache the scaled images on the server - save them under a name dependent on the dimensions of the generated image. E.g. trees.jpg becomes cache/trees_400x300.jpg
Then when you serve the image, just check to see if the file is in the cache - if it is, serve that, if not then regenerate before serving it. I've done that on image galleries a lot and it works fine. In terms of stopping the user redownloading the image - if the image is served as a 'standard' static image, the client's local cache should take care of it without you having to do any work. In short - all those optimisations should be possible serverside without you having to do anything at all to your Flash code. HTH, Ian On 5/17/06, Marcelo de Moraes Serpa <[EMAIL PROTECTED]> wrote:
Hi! I´m doing a research on RIA´s optimization techniques and I plan to implement such in my app´s next version as its getting bigger and bigger so it became a necessity to optimize it. Currently, I´m using shared fonts, shared symbols and shared classes (the so called "dll" swf) that are all loaded once in the application lifetime, avoiding the download redundancy and optimizing the size of the subsequent swfs. However, my application is still not fast as I would like it to be, the main reason is obvious, it uses too many classes (and v2 framework adds a great deal to the class inventory). The second reason is becouse of the nature of my app: Its an online picture album. The images are stored in 1MP at the server and each time the client requests the image, its converted (scaled down) at runtime using GD. It´s very flexible as I can make many different size images without worring about saving them, however, and I would like the oppinion of more experienced web developers, I think it would bring me problems when my site gets a very high trafic AND it is slower than if I would just load the image without pre-processing it. Also, I´ve not implemented controls such as to prevent the client to redownload the picture if it is already downloaded - how could I do that? Something that came into my mind is to use SharedObjects to cache data and some logic to implement such thing. Any suggestions would be very much appreaciated! Thanks, - Marcelo. _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
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