[baseten-users] Latency of Automatic Updates?

[Tuukka Norri]

Hi!

Brad Gibbs kirjoitti 22.9.2009 kello 23.19:
> In a system running in the configuration mentioned above, what kind  
> of latency would we be looking at?
We haven't tested configurations other than our own, but I'd expect  
similar latencies as Erik has had.

> Will it take longer to allow BaseTen to propagate its changes than  
> it would to send strings via TCP?
Changes are propagated using Postgres's notifications, which aren't  
much more than strings, and then queried from the database. Based on  
what I've read Postgres's protocol is quite lightweight.

> Is there any way to prioritize the propagation of changes?
We haven't considered that necessary. Changed objects are marked as  
faults and new values are fetched when needed. In other words, if an  
object changes and its properties aren't needed immediately, it'll  
only be marked for refreshing.

Currently update queries cause the whole object to be faulted, but  
we'll probably change this in the future.
-- 
Best regards,
Tuukka Norri
MK&C
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