Cassandra Seattle Tech Startups 3-10-10

A highly scalable, eventually consistent, distributed, structured key-value store. How we use it @ Frugal Mechanic Eric Peters (@ericpeters) STS 3-10-10

About ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10

Who Uses Cassandra? Eric Peters (@ericpeters) STS 3-10-10

Cassandra Design Goals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide “borrowed” from Avinash Lakshman Eric Peters (@ericpeters) STS 3-10-10

Cassandra write properties ,[object Object],[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10 Slide “borrowed” from Avinash Lakshman

Cassandra read properties ,[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10 Slide “borrowed” from Avinash Lakshman

MySQL Comparison ,[object Object],[object Object],Slide “borrowed” from Avinash Lakshman Eric Peters (@ericpeters) STS 3-10-10

ColumnFamilies { // this is a column name: "emailAddress", value: ”eric@example.com", timestamp: 123456789 } Examples from http://www.slideshare.net/jbellis/cassandra-open-source-bigtable-dynamo Eric Peters (@ericpeters) STS 3-10-10

Super ColumnFamilies { // this is a SuperColumn name: "homeAddress”, // with an infinite list of Columns value: { // note the keys is the name of the Column street: {name: "street", value: "1234 x street", timestamp: 123456789}, city: {name: "city", value: "san francisco", timestamp: 123456789}, zip: {name: "zip", value: "94107", timestamp: 123456789}, } } Examples from http://www.slideshare.net/jbellis/cassandra-open-source-bigtable-dynamo Eric Peters (@ericpeters) STS 3-10-10

JSON Column Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Examples from: http://arin.s3.amazonaws.com/pub/docs/WTF-is-a-SuperColumn.pdf Eric Peters (@ericpeters) STS 3-10-10

JSON Super Column Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Examples from: http://arin.s3.amazonaws.com/pub/docs/WTF-is-a-SuperColumn.pdf Eric Peters (@ericpeters) STS 3-10-10

Why Cassandra? ,[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10

Frugal Mechanic’s Data Eric Peters (@ericpeters) STS 3-10-10

Modeling Part Information ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10

Modeling Part Prices ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Modeling Part Fitments ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10

Great Resources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Eric Peters (@ericpeters) STS 3-10-10

Questions? Eric Peters (@ericpeters) STS 3-10-10

Cassandra Seattle Tech Startups 3-10-10

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