Cassandra

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Presentation on Cassandra

What is Cassandra? ,[object Object]

Uses Amazon’s Dyanamo’s fully distributed design.

Uses Google’s BigTable’sColumnFamily-based data model.

Developed by facebook

Open sourced in 2008,[object Object]

Fault Tolerant

Decentralized

Eventually Consistent

Rich Data Model

Elastic

Highly Available,[object Object]

Ugly

No streaming

Disc vs CPU Tradeoff

Denormalized data

Heavy write,[object Object]

Fault Tolerant ,[object Object]

Replication across multiple data centers is supported.

Failed nodes can be replaced with no downtime. ,[object Object]

There are no network bottlenecks.

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Cassandra

1.

2.

3. Uses Amazon’s Dyanamo’s fully distributed design.

4. Uses Google’s BigTable’sColumnFamily-based data model.

5. Developed by facebook

6.

7. Fault Tolerant

8. Decentralized

9. Eventually Consistent

10. Rich Data Model

12.

14. No streaming

15. Disc vs CPU Tradeoff

16. Denormalized data

17.

18.

19. Replication across multiple data centers is supported.

20.

21. There are no network bottlenecks.

22. There are no single points of failure.

23.

24. As the data is replicated, the latest version of something is sitting on at least one node in the cluster, but older versions can still be on other nodes.

25.

26. Column Family

29.

30.

31.

32. A row can have a virtually unlimited number of columns.

33.

34.

35. A column that is part of a super column can not be a super column itself.

36.

37.

38. Guarantee reads and write ConsistencyLevels, from one node to all nodes.

39.

40. Read ConsistencyLevels

41.

42. Start with empty database

43. Insert 1 year of data with 100 records per day.

44.

45. 3.68 ms / insert

46. Random Write

48. 1.27 ms / insert

49.

Notes de l'éditeur

Disc space is cheap and scaling MySQL is hard.