On 3/10/2010 1:07 PM, Eric Mill wrote:
If that's really the answer, that's pretty disappointing. PuSH isn't worth as much to me if I still have to poll client-side.I could maybe stomach infrequently resubscribing, "just to make sure", but if I did that, then I'd want to know that if I did miss updates in between resubscribes, that I'd get a backlog pushed to me of any missed updates.
PuSH is not a lossless protocol. The feed could switch hubs and stop notifying the one that you're subscribed to, and the only way that you'll ever know that is if you poll the original feed.
PuSH isn't a replacement for polling - it's an augmentation. It's a replacement for the thundering herd of updates when ping is used on a wide scale.
For my PuSH subscriber, feeds are polled on their regular frequency, however when a PuSH is received, that counts as if it were a poll. e.g. If polling happens once per hour, for example, and a push comes in at the 30-minute mark, the next poll won't occur until 1 hour after the push is received. For active feeds, a poll is rarely required. For inactive feeds, polling ensures that we never miss anything and that hub information hasn't changed.
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