[christkv]

Seems to me they used the wrong setup they should have looked at a replicaset setup with secondaries for read and sharding if they needed more write performance and nonblocking reads. That said version 2 has less locking problems and I understand they are working on finer grained locking.

[schmichael]

Sorry, this is a pretty poorly written blog post. We're definitely using sharding+replica sets.

Replication of any kind won't help you with a high write load as secondaries have to apply the same number of writes as primaries.

[christkv]

They seem to be very aware of the problem and focused on solving it as soon as possible. I guess it's just a matter of time. Compared to how long it took MySQL to mature into a stable platform I've been pretty impressed at their responsiveness and quick improvements so far :).

[christkv]

seems from the comments in the post that 10gen went out of it's way to be helpful in resolving the issues ???

[schmichael]

Yes. The only thing that would be better is if these issue didn't exist to begin with.