Cassandra - Revision history

Adamcolton: /* CQL */

2016-06-30T12:42:15Z

CQL

← Older revision		Revision as of 12:42, 30 June 2016
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	== CQL ==		== CQL ==
			CLI command is 'cqlsh'
	CREATE KEYSPACE Keyspace name		CREATE KEYSPACE Keyspace name
	WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : 3};		WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : 3};

			from cli
			DESCRIBE keyspaces;

Adamcolton: /* Install */

2016-06-29T16:31:22Z

Install

← Older revision		Revision as of 16:31, 29 June 2016
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	== Install ==		== Install ==
	https://www.digitalocean.com/community/tutorials/how-to-install-cassandra-and-run-a-single-node-cluster-on-ubuntu-14-04		https://www.digitalocean.com/community/tutorials/how-to-install-cassandra-and-run-a-single-node-cluster-on-ubuntu-14-04

			* /etc/cassandra.yaml

	== CAP Theorem ==		== CAP Theorem ==

Adamcolton at 16:29, 29 June 2016

2016-06-29T16:29:23Z

← Older revision		Revision as of 16:29, 29 June 2016
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			== Install ==
			https://www.digitalocean.com/community/tutorials/how-to-install-cassandra-and-run-a-single-node-cluster-on-ubuntu-14-04

	== CAP Theorem ==		== CAP Theorem ==

Adamcolton at 16:23, 29 June 2016

2016-06-29T16:23:57Z

← Older revision		Revision as of 16:23, 29 June 2016
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	The CAP theorem says that a system cannot provide all three.		The CAP theorem says that a system cannot provide all three.

			== Terms ==
			; CQL : Cassandra Query Language.
			; Replication factor : Number of copies of a piece of data
			; Keyspace: outer most container
			; Column Family : Like a table

			== CQL ==
			CREATE KEYSPACE Keyspace name
			WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : 3};

Adamcolton: Created page with " == CAP Theorem == * Consistency: All nodes see the same data at the same time * Availability: Every request receives a response about whether it succeeded or failed * Partiti..."

2016-06-29T16:06:47Z

Created page with " == CAP Theorem == * Consistency: All nodes see the same data at the same time * Availability: Every request receives a response about whether it succeeded or failed * Partiti..."

New page

== CAP Theorem ==
* Consistency: All nodes see the same data at the same time
* Availability: Every request receives a response about whether it succeeded or failed
* Partition tolerance: The system continues to operate despite arbitrary partitioning due to network failures

The CAP theorem says that a system cannot provide all three.