问题
Possible Duplicate:
Is there any NoSQL that is ACID compliant?
So, I heard NoSQL Databases are not ACID compliant, why is this?
回答1:
This isn't necessarily true - it depends on which particular database you're referring to. Some of them (for example Neo4j) are fully ACID compliant. Check out this link for a comparison of some NoSQL databases: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis
回答2:
Generally speaking, ACID compliance imposes performance overhead. NoSql performance is enhanced by this lack of performance overhead.
来源：https://stackoverflow.com/questions/9049474/why-arent-nosql-databases-acid-compliant