Introduction to Apache Cassandra

1. CassandraA highly scalable, eventually consistent, distributed, structured key-value store.

2. The cursedoracle of Troy.

3. StructuredKey-Value Store

4. Berkely DB, Memcached, etcNameValue

5. CassandraSuper ColumnSuper ColumnNameColumnNameValue

6. Distributed

8. Eventually Consistent

9. Node 1Node 2Node 3Node 4Write

10. Node 1Node 2Node 3Node 4Read

11. Node 1Node 2Node 3Node 4Write

12. Highly Scalable

15. Fault Tolerant

18. Rich Data Model

19. // Column:{ emailAddress: ‘jill@example.com’ }

20. // Super Column:homeAddress: { // Columns: street: ‘1234 Example St.’, city: ‘Santa Cruz’, state: ‘CA’, zip: ‘91210’}

21. // Column Family:userProfiles: { // Rows: bob2007: { // Columns: username: ‘bob2007’, age: 32, phone: ‘(818) 555-2345’ },birdHOUSE: { username: ‘birdHOUSE’, name: ‘George’, age: 19 }}

22. // Super Column Family:addressBook: { // Rows: bob2007: { // Super Columns: Joe: { email:’joe@example.com’ }, Ted: { street:’123 Jump St.’, phone:’555-1234’ } }birdHOUSE: { mom: { birthday:’1953-03-07’, phone:’555-7894’ } }}

23. Time for an example.Any questions?

Introduction to Apache Cassandra

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Introduction to Apache Cassandra