http://blog.nahurst.com/visual-guide-to-nosql-systems
http://oss-tw.blogspot.com/2010/04/hbase-vs-cassandra.html
- Consistency (all nodes see the same data at the same time)
- Availability (a guarantee that every request receives a response about whether it was successful or failed)
- Partition tolerance (the system continues to operate despite arbitrary message loss or failure of part of the system)
According to the theorem, a distributed system cannot satisfy all three of these guarantees at the same time.
No comments:
Post a Comment