CouchDB
     relax
CouchDB
     relax
 Sander van de Graaf
      svdgraaf
RELAX...
PERFORM LIKE A PR0N STAR
TOPICS
• NoSQL

• CouchDB      in a nutshell
• Querying

• map/reduce

• Fulltext   search
• CouchApps
NOSQL
IT’S A MOVEMENT
1998
Carlo Strozzi
NOSQL == Not Only SQL
“[The NoSQL movement] departs from the relational
model altogether, it should therefore have been called
more appropriatel...
CouchDB
     relax
NUTSHELL
SPEED
APPEND ONLY
NO REPAIR NEEDED
COMPACTING
HTTP SERVER
CAP
CouchDB




 CAP
CouchDB




EVENTUALLY CONSISTENT
FULL REST API
REST
• GET        • SELECT

• PUT        • UPDATE

• POST       • INSERT

• DELETE     • DELETE

• COPY       • ...
JSON
{
    total_rows: 2,
    offset: 0,
    rows: [
        {
            id: '_design/foobar',
            key: '_design...
REPLICATION
CouchDB
     relax
CouchDB
     relax
             CouchDB
                  relax
CouchDB
                  relax




CouchDB
     relax
             CouchDB
                  relax




             Couch...
CouchDB
     relax
             CouchDB
                  relax
CouchDB
                  relax




CouchDB
     relax




             CouchDB
                  relax
US   NL


              CouchDB
                   relax




CouchDB
     relax




              CouchDB
                ...
Laptop   Desktop


                 CouchDB
                      relax




CouchDB
     relax    Phone


                ...
P2P WEB
QUERYING
SELECT * FROM documents WHERE id = 123



          GET /documents/123
SELECT * FROM documents WHERE id = 123



          GET /documents/123
           PUT /documents/123
          POST /docum...
MAP/REDUCE
INPUT
      IP                 Bytes
212.122.174.13           18271
212.122.174.13           191726
212.122.174.13        ...
MAPPER => REDUCER
      IP         Bytes
                 18271
                 191726
212.122.174.13
                  1...
AFTER REDUCE
      IP          Bytes



212.122.174.13   210238




 74.119.8.111    99643
MAP/REDUCE

SELECT COUNT(foo)
FROM documents
WHERE 1
GROUP BY foo;
MAP/REDUCE
MAP/REDUCE

function(doc) {
  emit(doc.foo, doc);
}
MAP/REDUCE
MAP/REDUCE

function(keys, values, rereduce) {
    return sum(values);
}
MAP/REDUCE
COUCHDB-LUCENE
http://github.com/rnewson/couchdb-lucene
CONFIG
[external]
fti=/path/to/python /path/to/couchdb-lucene/tools/couchdb-external-hook.py

[httpd_db_handlers]
_fti = {...
http://127.0.0.1:5984> GET /foobar/_design/foobar
_DESIGN

{
    _id: '_design/foobar',
    _rev: '8-03a6bc983c721b1cc0ae4b461326bc31',
    language: 'javascript',
    view...
_DESIGN

{
    _id: '_design/foobar',
    _rev: '8-03a6bc983c721b1cc0ae4b461326bc31',
    language: 'javascript',
    view...
_DESIGN

function(doc) {
    var ret=new Document();
    ret.add(doc.subject);
    return ret
}
_DESIGN

function(doc) {
  var result = new Document();
  result.add(doc.subject, {"field":"subject", "store":"yes"});
  r...
http://127.0.0.1:5984> GET /foobar/_fti/_design/foo/by_subject?q=foobar
http://127.0.0.1:5984> GET /foobar/_fti/_design/foo/by_subject?q=foobar
COUCHAPPS
http://github.com/couchapp/couchapp
“Distributed, scalable, web
   applications you say?
omgwtfbbq!?!1!!!11!1!eleven”
_attachments
CouchDB
                  relax




CouchDB
     relax




             CouchDB
                  relax
COUCHAPP PUSH HTTP://LOCALHOST:5984/MYDB
LISTS
http://127.0.0.1:5984> GET /relax/_design/relax/_list/posts/all/foobar
HTTP/1.1 200 OK
Vary: Accept
Transfer-Encodin...
CouchDB
     relax
CouchDB
     relax
COUCHDBX
http://janl.github.com/couchdbx/
Q?
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
Advanced CouchDB Rotterdam.rb July 2010
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Advanced CouchDB Rotterdam.rb July 2010

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CouchDB talk about it's potential, it's unique features, how map/reduce works (simplified) and just how awesome CouchDB really is. Rock on!

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Advanced CouchDB Rotterdam.rb July 2010

  1. 1. CouchDB relax
  2. 2. CouchDB relax Sander van de Graaf svdgraaf
  3. 3. RELAX...
  4. 4. PERFORM LIKE A PR0N STAR
  5. 5. TOPICS • NoSQL • CouchDB in a nutshell • Querying • map/reduce • Fulltext search • CouchApps
  6. 6. NOSQL
  7. 7. IT’S A MOVEMENT
  8. 8. 1998
  9. 9. Carlo Strozzi
  10. 10. NOSQL == Not Only SQL
  11. 11. “[The NoSQL movement] departs from the relational model altogether, it should therefore have been called more appropriately ‘NoREL’, or something to that effect.” - Carlo Strozzi
  12. 12. CouchDB relax
  13. 13. NUTSHELL
  14. 14. SPEED
  15. 15. APPEND ONLY
  16. 16. NO REPAIR NEEDED
  17. 17. COMPACTING
  18. 18. HTTP SERVER
  19. 19. CAP
  20. 20. CouchDB CAP
  21. 21. CouchDB EVENTUALLY CONSISTENT
  22. 22. FULL REST API
  23. 23. REST • GET • SELECT • PUT • UPDATE • POST • INSERT • DELETE • DELETE • COPY • ...
  24. 24. JSON { total_rows: 2, offset: 0, rows: [ { id: '_design/foobar', key: '_design/foobar', value: { rev: '5-982b2fc36835715b2aae54609b5d5f1e' } }, { id: 'f0e1fd96eb6e094f74dda8d949000a6a', key: 'f0e1fd96eb6e094f74dda8d949000a6a', value: { rev: '1-86bca407fce8234a63c90ff549b56b10' } }, ] }
  25. 25. REPLICATION
  26. 26. CouchDB relax
  27. 27. CouchDB relax CouchDB relax
  28. 28. CouchDB relax CouchDB relax CouchDB relax CouchDB relax
  29. 29. CouchDB relax CouchDB relax
  30. 30. CouchDB relax CouchDB relax CouchDB relax
  31. 31. US NL CouchDB relax CouchDB relax CouchDB relax
  32. 32. Laptop Desktop CouchDB relax CouchDB relax Phone CouchDB relax
  33. 33. P2P WEB
  34. 34. QUERYING
  35. 35. SELECT * FROM documents WHERE id = 123 GET /documents/123
  36. 36. SELECT * FROM documents WHERE id = 123 GET /documents/123 PUT /documents/123 POST /documents/123 DELETE /documents/123 etc.
  37. 37. MAP/REDUCE
  38. 38. INPUT IP Bytes 212.122.174.13 18271 212.122.174.13 191726 212.122.174.13 198 74.119.8.111 91272 74.119.8.111 8371 212.122.174.13 43
  39. 39. MAPPER => REDUCER IP Bytes 18271 191726 212.122.174.13 198 43 91272 74.119.8.111 8371
  40. 40. AFTER REDUCE IP Bytes 212.122.174.13 210238 74.119.8.111 99643
  41. 41. MAP/REDUCE SELECT COUNT(foo) FROM documents WHERE 1 GROUP BY foo;
  42. 42. MAP/REDUCE
  43. 43. MAP/REDUCE function(doc) { emit(doc.foo, doc); }
  44. 44. MAP/REDUCE
  45. 45. MAP/REDUCE function(keys, values, rereduce) { return sum(values); }
  46. 46. MAP/REDUCE
  47. 47. COUCHDB-LUCENE http://github.com/rnewson/couchdb-lucene
  48. 48. CONFIG [external] fti=/path/to/python /path/to/couchdb-lucene/tools/couchdb-external-hook.py [httpd_db_handlers] _fti = {couch_httpd_external, handle_external_req, <<"fti">>}
  49. 49. http://127.0.0.1:5984> GET /foobar/_design/foobar
  50. 50. _DESIGN { _id: '_design/foobar', _rev: '8-03a6bc983c721b1cc0ae4b461326bc31', language: 'javascript', views: { foo: { map: 'function(doc) {n emit(doc.foo,1);n}', reduce: 'function(keys, values, rereduce) {return sum(values);}' } } }
  51. 51. _DESIGN { _id: '_design/foobar', _rev: '8-03a6bc983c721b1cc0ae4b461326bc31', language: 'javascript', views: { foo: { map: 'function(doc) {n emit(doc.foo,1);n}', reduce: 'function(keys, values, rereduce) {return sum(values);}' } }, fulltext: { by_subject: { index:"function(doc) { var ret=new Document(); ret.add (doc.subject); return ret }" }, } }
  52. 52. _DESIGN function(doc) { var ret=new Document(); ret.add(doc.subject); return ret }
  53. 53. _DESIGN function(doc) { var result = new Document(); result.add(doc.subject, {"field":"subject", "store":"yes"}); result.add(doc.content, {"field":"subject"}); result.add(new Date(), {"field":"indexed_at"}); return result; }
  54. 54. http://127.0.0.1:5984> GET /foobar/_fti/_design/foo/by_subject?q=foobar
  55. 55. http://127.0.0.1:5984> GET /foobar/_fti/_design/foo/by_subject?q=foobar
  56. 56. COUCHAPPS http://github.com/couchapp/couchapp
  57. 57. “Distributed, scalable, web applications you say? omgwtfbbq!?!1!!!11!1!eleven”
  58. 58. _attachments
  59. 59. CouchDB relax CouchDB relax CouchDB relax
  60. 60. COUCHAPP PUSH HTTP://LOCALHOST:5984/MYDB
  61. 61. LISTS http://127.0.0.1:5984> GET /relax/_design/relax/_list/posts/all/foobar HTTP/1.1 200 OK Vary: Accept Transfer-Encoding: chunked Server: CouchDB/0.11.0 (Erlang OTP/R13B) Etag: "DZZ19EPLWLHI89K1FOW9DGFT5" Date: Sun, 11 Jul 2010 09:55:42 GMT Content-Type: text/html <h1>ponies</h1><p>rock!</p>
  62. 62. CouchDB relax
  63. 63. CouchDB relax
  64. 64. COUCHDBX http://janl.github.com/couchdbx/
  65. 65. Q?
  1. ¿Le ha llamado la atención una diapositiva en particular?

    Recortar diapositivas es una manera útil de recopilar información importante para consultarla más tarde.

×