Sensei DB

LinkedIn is perhaps not known for their development efforts in the open source community.

But to my surprise, they have released an open source data store, dubbed "Sensei DB" which I find really interesting. (They may in fact have released it a while ago, but I just recently have discovered it)

• It's built for high reliability, fault tolerance and scalability
• The main uses are for full text search, key value store and realtime updates
• It includes a new query language, very similar to SQL, which they call BQL, or "Browse Query Language"

All in all it looks pretty interesting.

More information about SenseiDB on its website: https://linkedin.github.com/sensei/