Couchbase Server

Couchbase Server is an open source, distributed, JSON document database. It exposes a scale-out, key-value store with managed cache for sub-millisecond data operations, purpose-built indexers for efficient queries and a powerful query engine for executing SQL-like queries. For mobile and Internet of Things environments Couchbase also runs natively on-device and manages synchronization to the server.

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Transactions & Durability
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Administration and Tools