Presentation for DDDSW 2012 on Raven DB

1. Andrea Magnorsky

2.  Document Database
 JSON
 Linq
 Open source
 Transactional
 Flexible

3. No schemas
Documents DTO
Knowledge re-use
In synch with aggregates (DDD)
Advanced features

4.  Setup: for production and testing.
 Indexes
 map reduce.
 Understanding stale data.
 Test strategies
 Migrations
 Backup
 Document design: keep on keeping on.

5. Embedded
Server
Sharded
…

7.  Loads associated documents on first request.
 Example

8.  At the core of Raven
 Linq provider
 Eventually consistent

9. From http://www.gridgain.com/images/mapreduce_small.png

10.  The result type is not consistent across map
and reduce
 Not creating the indexes
 Creating too many indexes (they are costly)
 The index runs but results are not what you
expected

12.  Basically Map/reduce but with many maps

14.  Remove fields: Loose data
 Add fields: default values strategy
 Change: come up with a suitable strategy

15.  Sharding and Replication.
 Quotas.
 Expiration.
 Index Replication (to SQL)
 Authentication (with Oauth).
 Authorization.
 Versioning.
 Cascade Deletes.
 More Like This.
 Unique Constraints.

16.  Shadow copy. Take copies of data directory
 Raven backup and restore system

17.  Well designed and abstracted
 Embedded document store

18.  @silverspoon
 www.roundcrisis.com