A Scalable, Geo-Replicated, Transactional Datastore

Cockroach is a distributed key:value which supports ACID transactional semantics and versioned values as first-class features. The primary design goal is global consistency and survivability, hence the name. Cockroach aims to toerate disk, machine, rack or even datacenter failure with minimal latency disruption and no manual intervention. Cockroach nodes are symmetric; a design goal is one binary with minimal configuration and no required auxiliary services

Cockroach implements a single, monolithic sorted map from key to value where both keys and values are byte strings (not unicode). Cockroach scales linearly (theoritically up to 4 exabytes (4E) of logical data). The map is composed of one or more ranges and each range is backed by data stored in leveldb and replicated to up to a tota of three or more cockroach servers.