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Nosql from java developer pov

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NoSQL from Java developer PoV @_dagi from @gooddata Tuesday 25 January 2011
NoSQL Experiences • Few prototypes on top of NoSQL databases • Voldemort • CouchDB • Neo4J Tuesday 25 January 2011
Tables/Entities Integration 1 1 0...* 0...* Connector Connector Log Connector Connector Connector Tuesday 25 January 2011
Implementation details • Java classes • ORM mapping (Hibernate) • DDL schema Tuesday 25 January 2011
What’s wrong • Every new connector • new Java class • new mapping • DDL • 3rd party libraries • ~ 5-10 • ORM/Hibernate/Transactions deep knowledge Tuesday 25 January 2011
What’s wrong • Every new connector ed • new Java class ica t • new mappingp l e m p l • DDLco im ! 3rdo s se s • o r ca party libraries T ~ 5-10fo e • u s • ORM/Hibernate/Transactions deep knowledge Tuesday 25 January 2011
Make things as simple as possible, but not simpler. Tuesday 25 January 2011
CouchDB • 3 document types • Integration, Log, Connector • Schemaless (No DDL) • Elastic extensibility • Java bean <=>JSON mapping • HTTP client Tuesday 25 January 2011
ORM/RDBMS vs NoSQL ORM/RDBMS NoSQL Java model classes Java model classes JPA mapping JSON mapping DDL Hibernate + 3rd libs ORM deep knowledge Semantic of HTTP methods SQL/OQL Map/Reduce Tuesday 25 January 2011

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Nosql from java developer pov

  • 1. NoSQL from Java developer PoV @_dagi from @gooddata Tuesday 25 January 2011
  • 2. NoSQL Experiences • Few prototypes on top of NoSQL databases • Voldemort • CouchDB • Neo4J Tuesday 25 January 2011
  • 3. Tables/Entities Integration 1 1 0...* 0...* Connector Connector Log Connector Connector Connector Tuesday 25 January 2011
  • 4. Implementation details • Java classes • ORM mapping (Hibernate) • DDL schema Tuesday 25 January 2011
  • 5. What’s wrong • Every new connector • new Java class • new mapping • DDL • 3rd party libraries • ~ 5-10 • ORM/Hibernate/Transactions deep knowledge Tuesday 25 January 2011
  • 6. What’s wrong • Every new connector ed • new Java class ica t • new mappingp l e m p l • DDLco im ! 3rdo s se s • o r ca party libraries T ~ 5-10fo e • u s • ORM/Hibernate/Transactions deep knowledge Tuesday 25 January 2011
  • 7. Make things as simple as possible, but not simpler. Tuesday 25 January 2011
  • 8. CouchDB • 3 document types • Integration, Log, Connector • Schemaless (No DDL) • Elastic extensibility • Java bean <=>JSON mapping • HTTP client Tuesday 25 January 2011
  • 9. ORM/RDBMS vs NoSQL ORM/RDBMS NoSQL Java model classes Java model classes JPA mapping JSON mapping DDL Hibernate + 3rd libs ORM deep knowledge Semantic of HTTP methods SQL/OQL Map/Reduce Tuesday 25 January 2011