CASSANDRA Apache Cassandra, a top level Apache projectborn at Facebook and built onAmazon’s Dynamo and Google’s BigTable, is a distributed database for managing large amounts of structured data across many commodity servers, while providing highly available service and no single point of failure.  Cassandra offers capabilities that relational databases and other NoSQL databases simply cannot match such as: continuous availability, linear scale performance, operational simplicity and easy data distribution across multiple data. centers and cloud availability zones. Cassandra’s architecture is responsible for its ability to scale, perform, and offer continuous uptime. Rather than using a legacy master-slave or a manual and difficult-to-maintain sharded architecture, Cassandra has a masterless “ring” design that is elegant, easy to setup, and easy to maintain. In Cassandra, all nodes play an identical role; there is no concept of a master node, with all nodes communicating with each other equally. Cassandra’s built-for-scale architecture means that it is capable of handling large amounts of data

Cassandra is a NoSQL distributed database. By design, NoSQL databases are lightweight, open-source, non-relational, and largely distributed. Counted among their strengths are horizontal scalability, distributed architectures, and a flexible approach to schema definition. Cassandra is a non-relational, partitioned row store.  Rows are organized into column families (tables) with a required primary key Data is distributed across multiple master-less, nodes in an application-transparent manner. DataStax oversees the development of the Apache Cassandra open-source project, provides support to companies using Cassandra, and provides an enterprise-ready version of Cassandra. What is Cassandra and how does it work? Cassandra is a peer-to-peer distributed system made up of a cluster of nodes in which any node can accept a read or write request. Similar to Amazon’s Dynamo DB, every node in the cluster communicates state information about itself and other nodes using the peer-to-peer gossip communication protocol. Agenda: ? What is Cassandra?? Installation, CQL3? Data Modelling? Summary

APACHE CASSANDRA2.1 Documentation for developers and administrators on installing, configuring, and using the features and capabilities of Apache Cassandra scalable open source NoSQL database. Apache Cassandra™ is a massively scalable open source NoSQL database. Cassandra is perfect for managing large amounts of data across multiple data centers and the cloud. Cassandra delivers continuous availability, linear scalability, and operational simplicity across many commodity servers with no single point of failure, along with a powerful data model designed for maximum flexibility and fast response times. > Download Cassandra 2.1 Documentation PDF

CASSANDRA STRUCTURED STORAGE SYSTEM OVER A P2P NETWORK  Cassandra Structured Storage System over a P2P NetworkAvinashLakshman, PrashantMalik High availability •Eventual consistency–trade-off strong consistency in favor of high availability•Incremental scalability•Optimistic Replication•“Knobs”to tune tradeoffs between consistency, durability and latency•Low total cost of ownership•Minimal administration > Download PDF For More Information

CASSANDRA Apache Cassandra, a top level Apache project born at Facebook and built on Amazon’s Dynamo and Google’s BigTable, is a distributed database for managing large amounts of structured data across many commodity servers, while providing highly available service and no single point of failure.  Cassandra offers capabilities that relational databases and other NoSQL databases simply cannot match such as: continuous availability, linear scale performance, operational simplicity and easy data distribution across multiple data  centers and cloud availability zones. Cassandra’s architecture is responsible for its ability to scale, perform, and offer continuous uptime. Rather than using a legacy master-slave or a manual and difficult-to-maintain sharded architecture, Cassandra has a masterless “ring” design that is elegant, easy to setup, and easy to maintain. In Cassandra, all nodes play an identical role; there is no concept of a master node, with all nodes communicating with each other equally. Cassandra’s built-for-scale architecture means