Just came across this article about NOSQL patterns (not mine). It's covers lots of NOSQL implementation patterns, from a developers point of view (like hashing and replication patterns).
All in all it's very useful in case anyone is asking themselves about the question:
Where can I find information about NOSQL implementation patterns?
So added a question here, please feel free to add more answers!
A great article about NOSQL patterns is found here:
http://horicky.blogspot.com/2009/11/nosql-patterns.html
covers
API model
Machines layout
Data partitioning (Consistent Hashing)
Data replication
Membership Changes
Client Consistency
Master Slave (or Single Master) Model
Multi-Master (or No Master) Model
Quorum Based 2PC
Vector Clock
State Transfer Model
Operation Transfer Model
Map Reduce Execution
Handling Deletes
Storage Implementation