We’re truly excited to announce the availability of the first MongoDB 2.8 release candidate (rc0), headlined by improved concurrency (including document-level locking), compression, and pluggable storage engines. We’ve put the release through extensive testing, and will be hard at work in the coming weeks optimizing and tuning some of the new features. Now it’s your turn to help ensure the quality
![Announcing MongoDB 2.8.0-rc0 Release Candidate and Bug Hunt - MongoDB Blog](https://cdn-ak-scissors.b.st-hatena.com/image/square/b03f1896cc2b376c6745b587cbc0273f9d56d335/height=288;version=1;width=512/http%3A%2F%2F24.media.tumblr.com%2Favatar_7d391eb913cd_128.png)