MongoDB 2.4 Released: Text Search, Security, Hash-based Sharding

Using the new working set analyser is going to make figuring out how much memory you need significantly easier. Giving MongoDB enough memory for your working set is the easiest way to get performance but it was quite difficult to figure it out: you had to know both data and index sizes across your most common usage patterns.

Great to see the Pick database reinvented bit by bit. Takes me back to 1980. Forget the past, doomed to repeat, etc.

I was hoping for collection-level locking to be a part of the 2.4 release. I didn't see any mention of it in the release notes. Last I heard they were going to implement collection-level locking and then begin work on document-level locking. I'm still hoping document-level locking isn't too far off.

It is great to have a stable version with fast count indexes see <a href="https://jira.mongodb.org/browse/SERVER-1752" rel="nofollow">https://jira.mongodb.org/browse/SERVER-1752</a><p>Best feature for me

"db.killOp() Can Now Kill Foreground Index Builds"<p>That's going to save a lot of accidental "shit-the-whole-db-is-locked" pain.

I am curious to play with the text searching. I wonder how it stacks up to Lucerne or Solr in the text indexing space

According to the upgrade instructions [1], the only supported upgrade path from sharded 2.0 clusters is via 2.2.<p>[1] <a href="http://docs.mongodb.org/manual/release-notes/2.4-upgrade/#upgrade-a-sharded-cluster-from-mongodb-2-2-to-mongodb-2-4" rel="nofollow">http://docs.mongodb.org/manual/release-notes/2.4-upgrade/#up...</a>

I was hoping the security enhancements would include SSL certificate validation. Anyone know why they don't do that, or how a user should approach that limitation?

Whoop! Multithreaded javascript with V8 JavaScript engine!

Love seeing the text indexing!

V8 is another important change that isn't really touted much in this release.

I'm glad this is out. I'm really going to enjoy plugging fractal trees in under FTS.

any row-level locking?)

[Comment about supporting only one master]