- Proven
Cassandra is in use at Netflix, Twitter, Urban Airship, Constant Contact, Reddit, Cisco, OpenX, Digg, CloudKick, Ooyala, and more companies that have large, active data sets. The largest known Cassandra cluster has over 300 TB of data in over 400 machines.
- Fault Tolerant
Data is automatically replicated to multiple nodes for fault-tolerance. Replication across multiple data centers is supported. Failed nodes can be replaced with no downtime.
- Decentralized
There are no single points of failure. There are no network bottlenecks. Every node in the cluster is identical.
- You’re in Control
Choose between synchronous or asynchronous replication for each update. Highly available asynchronus operations are optimized with features like Hinted Handoffand Read Repair.
- Rich Data Mode
Allows efficient use for many applications beyond simple key/value.
- Elastic
Read and write throughput both increase linearly as new machines are added, with no downtime or interruption to applications.
- Durable
Cassandra is suitable for applications that can’t afford to lose data, even when an entire data center goes down.
- Professionally Supported
Cassandra support contracts and services are available from third parties.
http://cassandra.apache.org/
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