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From Randall Leeds <randall.le...@gmail.com>
Subject Re: CouchDB-lounge views
Date Wed, 12 May 2010 16:02:27 GMT
No. Nothing is totally guaranteed. Replication ensures that live nodes will
eventually contain all updates. If you write a document and the node that
receives it goes down, a subsequent view request will hit another replica
which may not yet have the update.

This is true in any distributed database that does not commit changes to
multiple replicas.

I've considered adding something like dynamo/riak/cassandra along the lines
of R and W quorum values for requests but right now a write will return as
soon as the first couch responds and lounge leaves it up to couchdb
replication to ensure the other nodes holding that shard eventually receive
that update.

On May 12, 2010 5:41 AM, "Markus Jelsma" <markus.jelsma@buyways.nl> wrote:

Yes, but you must query through the proxy. Dumbproxy will know if you
request
a view so it will delegate to smartproxy. Smaryproxy will then fetch the
results from the shards and merge them.



On Wednesday 12 May 2010 10:36:53 Alexander Uvarov wrote:
> Is it guaranteed that document previou...
Markus Jelsma - Technisch Architect - Buyways BV
http://www.linkedin.com/in/markus17
050-8536620 / 06-50258350

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