NoSQL workshop

Discover the diversity of NoSQL

Friso van Vollenhovenfvanvollenhoven@xebia.comJoris Bontjejbontje@xebia.com

Why not only SQL?

scaling up has limits

RDBMS

RDBMS RDBMS

RDBMS

RDBMS not built with scale

out in mind

scaling out per machine licenses

is expensive

Why not only SQL?

NoSQL landscape

MongoDB

‣ Document-oriented database (schema free)‣ Adhoc queries, querying nested fields, indexing‣ Sharding and Replication

$ db.twitter-user.find({id: 14352528})

{! name: “NLJUG, Dutch Java Us”! statuses_count: 200! description: ”NLJUG”! location: ”Netherlands”! screen_name: ”nljug”! status: {! ! id: 126973661537255420! ! geo: null! ! source: ”HootSuite”! ! text: ”RT @ktukker: en het lijkt erop dat het kabeltje weer verbonden is. de! ! @nljug server is weer bereikbaar. #xs4all #storing”! ! created_at: ”Thu Oct 20 10:50:54 +0000 2011”! }! url: ”http://www.nljug.org/”! friends_count: 31! followers_count: 950! id: 14352528! created_at: ”Thu Apr 10 16:12:07 +0000 2008”}

Neo4j

‣ Graph database‣ Storing data as nodes and relationships in graphs‣ High-speed node traversal / search‣ Full transaction support‣ Scalable for reads through replication

HBase

‣ Sparse column database‣ Based on Google’s BigTable model (similar to Cassandra)‣ Built for scalabil ity‣ Strong consistency at the row level‣ Data model:‣ row key => column family:column qualif ier:column value‣ columns are sparse‣ Data is always byte[]

key / column family ‘DATA FAMILY’ ‘OTHER FAMILY’

[100, 101, 13, 8] [13,10]:[1,2,3,4,5] [18,10]:[1,9,7] [120,124]:[123]

[100, 101, 13, 10] [13,10]:[1,2,3,4,5] [20,9]:[1,9,7] [120,124]:[123]

[100, 101, 13, 22] [18,10]:[1,9,7] [120,124]:[123]

Riak

‣ Decentralized Key-value store‣ Links, MapReduce, Secondary indexes‣ No master node; no single point of failure‣ Eventually consistentGET /riak/twitter-user/14352528

Content-Type: application/json{! name: “NLJUG, Dutch Java Us”! statuses_count: 200! description: ”NLJUG”! location: ”Netherlands”! screen_name: ”nljug”! status: {! ! id: 126973661537255420! ! geo: null! ! source: ”HootSuite”! ! text: ”RT @ktukker: en het lijkt erop dat het kabeltje weer verbonden is. de! ! @nljug server is weer bereikbaar. #xs4all #storing”! ! created_at: ”Thu Oct 20 10:50:54 +0000 2011”! }! url: ”http://www.nljug.org/”! friends_count: 31! followers_count: 950! id: 14352528! created_at: ”Thu Apr 10 16:12:07 +0000 2008”}

Exercise

‣ Twitter data:‣ Most @nljug followers and their most recent tweets as JSON

data

‣ Now create 4 groups:‣ MongoDB: Age‣ Neo4j: Ron‣ HBase: Friso‣ Riak: Joris

‣ Access Point: NOSQL password: jfall2011‣ Data and source available on http://192.168.0.100:8080/

‣ Check README.md for installation instructions, exercises and hints