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Intro Couchdb

S
selvamanisampath

This document introduces CouchDB, an open-source document-oriented NoSQL database that uses a RESTful API. It is schema-less and stores data in JSON format. Documents can be queried using user-defined JavaScript map/reduce functions. CouchDB supports multi-master replication and MVCC concurrency control. Examples are provided on installing CouchDB, creating databases and documents via REST calls, updating documents, and creating views. Major companies that use CouchDB are also listed.

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Introducing CouchDB Tuesday November 11, 2009 Hatem Ben Yacoub
Who am I ? ● Hatem Ben Yacoub ● IT Consultant ● Senior Systems Architect ● PHP Expert ● e-Government Specialist ● Energy Engineer ● Open Source Evangelist ● http://phpmagazine.net ● hatem@php.net / @hatem / http://hatem.tel
How to build faster, bigger, reliable websites...
Scalability
Scalability ~== Database optimization
RDBMS … old fashion
… new fashion ??
NoSQL “Not Only SQL”
Scaling writes & Scaling reads
NoSQL Non-Distributed databases Distributed Databases (Redis, MongoDB, (Cassandra, Hbase, CouchDB, Neo4j, Riak, Scalaris...) Tokyo cabinet ...)
Intro Couchdb
CouchDB is NOT ● A relational database. ● A replacement for relational databases. ● An object-oriented database.
CouchDB is ● OpenSource Database ● RESTful API ● Schema-less document store (document in JSON format) ● Multi-Version-Concurrency-Control model ● User-defined query structured as map/reduce ● Incremental Index Update mechanism ● Multi-Master Replication model ● Written in Erlang
Let's give it a try Ubuntu 9.10 already uses couchdb (all POSIX systems supported) Install the database server : $sudo apt-get install couchdb
Test installation
CouchDB port 5984
CouchDB Management interface (Futon)
Create database test
Firebug
Creating a document with jQuery // server respond with JSON also : // {"ok":true, "id":"323409622afb6477e7108684785256b8", "rev":"1-3182c819b0f98858c54ad920d6c44498"} // including the document id and revision, and a confirmation variable ok=true
How to request this document ? // response is also in JSON : // {"_id":"323409622afb6477e7108684785256b8", "_rev":"1-3182c819b0f98858c54ad920d6c44498", "Name":"Makkah", "Zip":21955}
What about updating ? // notice in the response we have revision changed to 2 // {"ok":true, "id":"323409622afb6477e7108684785256b8", "rev":"2-03779debc847f783493a69e61bd98560"}
What about creating a view ? // Server respond with {"ok":true, "id":"_design/render", "rev":"1-f95a9b997f1081043fda1a34be76c47e" } http://127.0.0.1:5984/test/_design/render/_show/code/480f17c996bcbd174ac64b976de47f79
Easy ?!
Why CouchDB ● Easy to use data storage (NoSQL) ● Easy to integrate with web applications : JavaScript, JSON ● Scalability for large web applications : Incremental Replication, bi-directional conflict detection and management ● Query-able and index-able ● Offline by default
Who's using CouchDB ?
Relax
Intro Couchdb
Ubuntu One Ubuntu : 10 million desktops worldwide
Intro Couchdb
Lounge proxy-based partitioning/clustering framework
Mozilla Raindrop New messaging platform built on top of CouchDB
Thank you
Read more ... ● http://couchdb.org ● http://planet.couchdb.org ● http://horicky.blogspot.com/2008/10/couchdb-imple ● http://jan.prima.de ● http://damienkatz.net/ ● http://jchrisa.net
Questions ?

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Intro Couchdb

  • 1. Introducing CouchDB Tuesday November 11, 2009 Hatem Ben Yacoub
  • 2. Who am I ? ● Hatem Ben Yacoub ● IT Consultant ● Senior Systems Architect ● PHP Expert ● e-Government Specialist ● Energy Engineer ● Open Source Evangelist ● http://phpmagazine.net ● hatem@php.net / @hatem / http://hatem.tel
  • 3. How to build faster, bigger, reliable websites...
  • 5. Scalability ~== Database optimization
  • 6. RDBMS … old fashion
  • 9. Scaling writes & Scaling reads
  • 10. NoSQL Non-Distributed databases Distributed Databases (Redis, MongoDB, (Cassandra, Hbase, CouchDB, Neo4j, Riak, Scalaris...) Tokyo cabinet ...)
  • 12. CouchDB is NOT ● A relational database. ● A replacement for relational databases. ● An object-oriented database.
  • 13. CouchDB is ● OpenSource Database ● RESTful API ● Schema-less document store (document in JSON format) ● Multi-Version-Concurrency-Control model ● User-defined query structured as map/reduce ● Incremental Index Update mechanism ● Multi-Master Replication model ● Written in Erlang
  • 14. Let's give it a try Ubuntu 9.10 already uses couchdb (all POSIX systems supported) Install the database server : $sudo apt-get install couchdb
  • 20. Creating a document with jQuery // server respond with JSON also : // {"ok":true, "id":"323409622afb6477e7108684785256b8", "rev":"1-3182c819b0f98858c54ad920d6c44498"} // including the document id and revision, and a confirmation variable ok=true
  • 21. How to request this document ? // response is also in JSON : // {"_id":"323409622afb6477e7108684785256b8", "_rev":"1-3182c819b0f98858c54ad920d6c44498", "Name":"Makkah", "Zip":21955}
  • 22. What about updating ? // notice in the response we have revision changed to 2 // {"ok":true, "id":"323409622afb6477e7108684785256b8", "rev":"2-03779debc847f783493a69e61bd98560"}
  • 23. What about creating a view ? // Server respond with {"ok":true, "id":"_design/render", "rev":"1-f95a9b997f1081043fda1a34be76c47e" } http://127.0.0.1:5984/test/_design/render/_show/code/480f17c996bcbd174ac64b976de47f79
  • 25. Why CouchDB ● Easy to use data storage (NoSQL) ● Easy to integrate with web applications : JavaScript, JSON ● Scalability for large web applications : Incremental Replication, bi-directional conflict detection and management ● Query-able and index-able ● Offline by default
  • 27. Relax
  • 29. Ubuntu One Ubuntu : 10 million desktops worldwide
  • 32. Mozilla Raindrop New messaging platform built on top of CouchDB
  • 34. Read more ... ● http://couchdb.org ● http://planet.couchdb.org ● http://horicky.blogspot.com/2008/10/couchdb-imple ● http://jan.prima.de ● http://damienkatz.net/ ● http://jchrisa.net