Because there is time limit per request you can not implement better chat system. If there was no time limit per request you could try server polling, (make request, waiting for data, when data is avaible get it and then make next request and wait) or server push using chunked encoding.
On Apr 2, 6:13 am, ryandscott <[email protected]> wrote: > I'm wondering what the best way to implement a chat system would be. > Currently, I have a javascript timer that goes off every x seconds to > query the database and return the list of chats. I keep my list to a > certain number of chats, but it seems that the way I'm doing the whole > process is a fairly poor design. > > Here's basically how it goes: > > user.enterText(text) > chats.append(text) > > every 5 seconds, Do: > chat_list = chats.getChatsFromDB() > display(chat_list) > > I'm wondering if there is a way to trigger an update only when a new > chat is entered (by any user). Implementing a "push" system seems > impossible because I can't really leave a request open. Is there > something like that though that could do what I'm talking about? > > I've looked at the current chat programs that people have created in > app engine, and they all seem to have a delay just like mine before > the chat window is updated. I'm assuming they are using javascript to > update, but without knowing the code I can't say for sure. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
