Apache Cassandra
The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data. Cassandra's support for replicating across multiple datacenters is best-in-class, providing lower latency for your users and the peace of mind of knowing that you can survive regional outages.
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Alternatives to Apache Cassandra
MongoDB
Free
MongoDB is a document-oriented database tool that allows users to store objects into documents rather than tables. Since all of the data related to a single object can be found in its own document,
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Redis
Free
Redis is a data structure store software that can be used as a cache, message broker, and database. It is open source and BSD licensed, which means that it's completely free to use and constantly
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CouchBase
Free
Couchbase is the NoSQL database for business-critical applications. Learn more.
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Datomic
Freemium
Datomic stores a record of immutable facts, which gives your applications strong consistency combined with horizontal read scalability, plus built-in caching. Since facts are never update-in-place
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PostgreSQL
Free
The official site for PostgreSQL, the world's most advanced open source database
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RethinkDB
Free
RethinkDB is probably the most interesting new 'on-disk + complex queries' database out there. For sure made by people who get it. Salvatore Sanfillipo, creator of Redis. At NASA, RethinkDB
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Microsoft SQL Server
Freemium
Microsoft Azure is an open, flexible, enterprise-grade cloud computing platform. Move faster, do more and save money with IaaS + PaaS. Try for FREE.
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MariaDB
Free
The MariaDB project is pleased to announce the availability of MariaDB 10.2.12, the next stable release in the 10.2 series. See the release notes and changelogs for details. Download MariaDB
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Oracle Database
Paid
See how Oracle Database 12c enables businesses to plug into the cloud and power the real-time enterprise. Oracle Database 12c introduces a new multitenant architecture and in-memory data processing
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