I don't know anything about the Itemscript libraries that bill posted about, but I took a quick glance and it looks worthwhile investigating. Personally, I suspect that GWT-RPC does not have more bandwidth overhead but there would be a tad bit more processing overhead on both the client and server, so sticking with GWT-XML/JSON is the most lightweight, however I think your design and implementation for this is the most critical.
I have three major suggestions. First, IF the data is not dependent on later rows and you merely want to display the data or make calculations for individual rows or certain groups then I highly suggest you break it up into numerous async calls for the data. Get the first 100 rows and then the next 100, continuously. If you can't use any of the data until it's all there... well it might still be worth breaking it up because an async call can fail or be interrupted partway through... if the 100th call fails for some obscure reason you can just repeat the call indefinitely to continue... thus you won't have lost the first 99 calls of data. Second, I seriously suggest using compression if the data is mostly text. It's not hard at all to write a good lossless compression program using Huffman coding in any language... I'm sure it would be possible to do it in JavaScript (or GWT) and I'm sure the code would not be large. I wrote a simple Huffman compression app a couple years ago in University, it was easy and small. Then you can compress the data on the server, send it and uncompress it on the client. That would be awesome! Text can be compressed anywhere from 30%-60%+. That will directly translate into speed! Third, whatever you do, don't be sending any kind of html, css or other UI bits along with that data! (This is assuming you are displaying some of the contents of the database) You can use logic to build the UI instead of repeatedly sending data that is surrounded with html tags. Goodluck! On Jun 11, 12:58 pm, bill braasch <bill.braa...@gmail.com> wrote: > Check out the Itemscript libraries. http://code.google.com/p/itemscript/ > Itemscript includes a JSON RPC with cross platform Java / GWT > libraries. > > There's also an in memory database you might find useful for managing > the client side. > > Bill -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
