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HTTP + JSON document database with Map Reduce views and peer-based replication.
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Amazon DynamoDB is a fast and flexible NoSQL database service for all applications that need consistent, single-digit millisecond latency at any scale. It is a fully managed cloud database and supports both document and key-value store models.
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Open-source JavaScript database inspired by Apache CouchDB that's designed to run well within the browser.
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The world's most popular open source database.
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Open-source software for reliable, scalable, distributed computing.
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Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.