CloudKit presentation delivered at the Golden Gate Ruby Conference in San Francisco, CA on 4/18/09.

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1

2. Jon Crosby
http://joncrosby.me

4. Engine Yard Solo
“The platform for
on-demand management of your
Ruby on Rails application
in the cloud.”

5. We’re Hiring

6. CloudKit

7. Open Web
JSON
Appliance

8. Open Web
JSON
Appliance

9. RESTful Collections
of
JSON Documents

10. CouchDB
Persevere

11. Ruby

12. $ gem install cloudkit

13. WayOfThinking.new

14. WayOfThinking.web

15. 2009

16. if (developer.building_web_framework?) {
MVCAbstraction.new
}

17. Rails 3

18. Rails 3 => API

19. framework = {
:orm => AR
:dispatcher => AD}.merge(
:orm => YourORM)

20. framework = {
:orm => AR
:dispatcher => AD}.merge(
:orm => YourORM)

21. framework = {
:orm => AR
:dispatcher => AD}.merge(
:orm => YourORM)

22. ! MVC

23. ! MVC “in the back?”

24. RESTful Application Architectures

25. RADAR
Dave Thomas
http://pragdave.pragprog.com/pragdave/2007/03/the_radar_archi.html

26. Resource Composition in the Browser
A.S.
Focus

27. Resource Composition in the Browser
A.S.
Focus

28. Resource Composition in the Browser
A.S.
Focus

29. Cappuccino
http://280slides.com

30. Sproutcore
http://sproutcore.com

31. Desktop / Mobile Apps

32. ESI
Caching Layer
REST
Fragment A Service
Client
REST
Fragment B
Service

33. jQueryUI
Dojo
MooTools

34. WayOfThinking.web

35. Rack

36. The Web

38. HTTP

39. Intermediaries
HTTP

40. Intermediaries App
HTTP

41. Intermediaries App
HTTP

42. Intermediaries Rack
HTTP

44. HTTP

45. Intermediaries
HTTP

46. Middleware
HTTP

47. Middleware App
HTTP

48. Rack is the Web

49. Constraints

50. Constraints => Interface

51. Constraints => Interface => SPEC

52. CloudKit

53. REST

54. Roy Fielding
Architectural Styles and the
Design of Network-based Software Architectures
http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm

55. Build An App

56. config.ru

57. require ‘cloudkit’
expose :todos, :profiles

58. Done

59. $ rackup config.ru

60. $ curl -i http://localhost:9292/cloudkit-meta

61. $ curl -i http://localhost:9292/cloudkit-meta
HTTP/1.1 200 OK
ETag: quot;5b6f484abf2d95cec3ea8867d1754418quot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 33
{quot;urisquot;:[quot;/todosquot;,quot;/profilesquot;]}

62. $ curl -i -XOPTIONS http://localhost:9292/todos

63. $ curl -i -XOPTIONS http://localhost:9292/todos
HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 0
Allow: GET, HEAD, POST, OPTIONS

64. $ curl -i http://localhost:9292/todos

65. $ curl -i http://localhost:9292/todos
HTTP/1.1 200 OK
ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot;
Link: <http://localhost:9292/todos/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 32
{quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}

66. $ curl -i http://localhost:9292/todos
HTTP/1.1 200 OK
ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot;
Link: <http://localhost:9292/todos/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 32
{quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}

67. $ curl -i http://localhost:9292/todos
HTTP/1.1 200 OK
ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot;
Link: <http://localhost:9292/todos/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 32
{quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}

68. $ curl -i http://localhost:9292/todos
HTTP/1.1 200 OK
ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot;
Link: <http://localhost:9292/todos/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 32
{quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}

69. Link Relations and HTTP Header Linking
IETF Draft by Mark Nottingham
http://tools.ietf.org/html/draft-nottingham-http-link-header-04

70. Hypermedia
as the
Engine of Application State
-- Fielding

71. Connectedness
-- Richardson, Ruby

72. $ curl -i -XPOST -d'{quot;titlequot;:quot;fooquot;}'
http://localhost:9292/todos

73. $ curl -i -XPOST -d'{quot;titlequot;:quot;fooquot;}'
http://localhost:9292/todos
HTTP/1.1 201 Created
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 159
{
quot;okquot;:true,
quot;uriquot;:quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;,
quot;etagquot;:quot;9216dde0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:13:04 GMTquot;
}

74. Read-optimized

75. HTTP-Oriented Storage

76. Metadata
+
Document

77. URI, ETag, Last-Modified, etc.
+
Document

78. SQL

79. ORM

80. Tokyo Cabinet

81. Tokyo Cabinet Tables

82. todos[“random_id”] = {
“uri” => “/todos/abc”,
“etag” => “9216dde0-0c7b-012c”,
“last_modified” => “Thu, 16 Apr 2009 06:13:04 GMT”,
“remote_user” => “http://joncrosby.me”,
“json” => “{”title”:”foo”}”,
...
}

83. Rufus::Tokyo
record = store.query { |q|
q.add_condition(“uri”, :eql, “/todos/abc”)
}

84. Schema-free

85. *
Schema-free

86. HTTP and JSON
are the Schema

87. $ curl -i -XPUT -d'{quot;titlequot;:quot;barquot;}'
http://localhost:9292/todos/abc

88. $ curl -i -XPUT -d'{quot;titlequot;:quot;barquot;}'
http://localhost:9292/todos/abc
HTTP/1.1 201 Created
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 126
{
quot;okquot;:true,
quot;uriquot;:quot;/todos/abcquot;,
quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;
}

89. $ curl -i -XOPTIONS http://localhost:9292/todos/abc

90. $ curl -i -XOPTIONS http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 0
Allow: GET, HEAD, PUT, DELETE, OPTIONS

91. $ curl -i http://localhost:9292/todos/abc

92. $ curl -i http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT
ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;
Link: <http://localhost:9292/todos/abc/versions>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 15
{quot;titlequot;:quot;barquot;}

93. $ curl -i http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT
ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;
Link: <http://localhost:9292/todos/abc/versions>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 15
{quot;titlequot;:quot;barquot;}

94. $ curl -i http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT
ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;
Link: <http://localhost:9292/todos/abc/versions>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 15
{quot;titlequot;:quot;barquot;}

95. $ curl -i http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT
ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;
Link: <http://localhost:9292/todos/abc/versions>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 15
{quot;titlequot;:quot;barquot;}

96. Auto-versioning

97. /:collection
/:collection/:uuid
/:collection/:uuid/versions
/:collection/:uuid/versions/:etag

98. /:collection
/:collection/:uuid
/:collection/:uuid/versions
/:collection/:uuid/versions/:etag

99. /:collection
/:collection/:uuid
/:collection/:uuid/versions
/:collection/:uuid/versions/:etag

100. /:collection
/:collection/:uuid
/:collection/:uuid/versions
/:collection/:uuid/versions/:etag

101. /:collection
/:collection/:uuid
/:collection/:uuid/versions
/:collection/:uuid/versions/:etag

102. $ curl -i http://localhost:9292/todos

103. $ curl -i http://localhost:9292/todos
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT
ETag: quot;0aca58964aa2e15a9365d72dd4c43472quot;
Link: <http://localhost:9292/todos/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 94
{
quot;urisquot;:[
quot;/todos/abcquot;,
quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;
],
quot;totalquot;:2,
quot;offsetquot;:0
}

104. Lost Update Problem:

105. Lost Update Problem: Solved

106. 2 Users

107. 2 Users
2 Browsers

108. 2 Users
2 Browsers
1 Document

109. 2 Users
2 Browsers
1 Document
Fight!

110. 2 Users
2 Browsers
1 Document
Hand Wave!

111. $ curl -i -XPUT -d'{quot;titlequot;:quot;bazquot;}'
http://localhost:9292/todos/abc

112. $ curl -i -XPUT -d'{quot;titlequot;:quot;bazquot;}'
http://localhost:9292/todos/abc
HTTP/1.1 400 Bad Request
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 25
{quot;errorquot;:quot;etag requiredquot;}

113. $ curl -i -XPUT
-H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208'
-d'{quot;titlequot;:quot;bazquot;}'
http://localhost:9292/todos/abc

114. $ curl -i -XPUT
-H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208'
-d'{quot;titlequot;:quot;bazquot;}'
http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 126
{
quot;okquot;:true,
quot;uriquot;:quot;/todos/abcquot;,
quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;
}

115. $ curl -i -XPUT
-H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208'
-d'{quot;titlequot;:quot;boxquot;}'
http://localhost:9292/todos/abc

116. $ curl -i -XPUT
-H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208'
-d'{quot;titlequot;:quot;boxquot;}'
http://localhost:9292/todos/abc
HTTP/1.1 412 Precondition Failed
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 31
{quot;errorquot;:quot;precondition failedquot;}

117. $ curl -i http://localhost:9292/todos/abc/versions

118. $ curl -i http://localhost:9292/todos/abc/versions
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT
ETag: quot;f7aae4894429a39c7c3fe0c8ea9aa00equot;
Link: <http://localhost:9292/todos/abc/versions/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 109
{
quot;urisquot;:[
quot;/todos/abcquot;,
quot;/todos/abc/versions/f4538ca0-0c7b-012caf2e-0023dfa0a208quot;
],
quot;totalquot;:2,
quot;offsetquot;:0
}

119. $ curl -i http://localhost:9292/todos/abc/versions
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT
ETag: quot;f7aae4894429a39c7c3fe0c8ea9aa00equot;
Link: <http://localhost:9292/todos/abc/versions/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 109
{
quot;urisquot;:[
quot;/todos/abcquot;,
quot;/todos/abc/versions/f4538ca0-0c7b-012caf2e-0023dfa0a208quot;
],
quot;totalquot;:2,
quot;offsetquot;:0
}

120. Why _resolved?

121. O(n)

122. 1000 documents = 1001 GETs

123. :-(

124. Time to rewrite in Scala?

125. $ curl -i http://localhost:9292/todos/abc/versions/_resolved

126. $ curl -i http://localhost:9292/todos/abc/versions/_resolved
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT
ETag: quot;ea2238f8f2da37b70f3d2f09464f166equot;
Link: <http://localhost:9292/todos/abc/versions>; rel=quot;indexquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 384
{
quot;documentsquot;:[
{
quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;uriquot;:quot;/todos/abcquot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;,
quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot;
},
{
quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;uriquot;:quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;,
quot;documentquot;:quot;{quot;titlequot;:quot;barquot;}quot;
}
],
quot;totalquot;:2,
quot;offsetquot;:0
}

127. $ curl -i http://localhost:9292/todos/abc/versions/_resolved
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT
ETag: quot;ea2238f8f2da37b70f3d2f09464f166equot;
Link: <http://localhost:9292/todos/abc/versions>; rel=quot;indexquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 384
{
quot;documentsquot;:[
{
quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;uriquot;:quot;/todos/abcquot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;,
quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot;
},
{
quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;uriquot;:quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;,
quot;documentquot;:quot;{quot;titlequot;:quot;barquot;}quot;
}
],
quot;totalquot;:2,
quot;offsetquot;:0
}

128. $ curl -i http://localhost:9292/todos/_resolved

129. $ curl -i http://localhost:9292/todos/_resolved
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT
ETag: quot;59edaebe03b5fe90fa59ef6de633afcequot;
Link: <http://localhost:9292/todos>; rel=quot;indexquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 369
{
quot;documentsquot;:[
{
quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;uriquot;:quot;/todos/abcquot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;,
quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot;
},
{
quot;etagquot;:quot;9216dde0-0c7b-012c-af2e-0023dfa0a208quot;,
quot;uriquot;:quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:13:04 GMTquot;,
quot;documentquot;:quot;{quot;titlequot;:quot;fooquot;}quot;
}
],
quot;totalquot;:2,
quot;offsetquot;:0
}

130. $ curl -i -XDELETE
-H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208'
http://localhost:9292/todos/abc

131. $ curl -i -XDELETE
-H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208'
http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 92
{
quot;okquot;:true,
quot;uriquot;:quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;etagquot;: quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:33:50 GMTquot;
}

132. $ curl -i -XDELETE
-H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208'
http://localhost:9292/todos/abc
HTTP/1.1 200 OK
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 92
{
quot;okquot;:true,
quot;uriquot;:quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;etagquot;: quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:33:50 GMTquot;
}

133. $ curl -i http://localhost:9292/todos/abc

134. $ curl -i http://localhost:9292/todos/abc
HTTP/1.1 410 Gone
Link: <http://localhost:9292/todos/abc/versions>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot;
Cache-Control: no-cache
Content-Type: application/json
Content-Length: 37
{quot;errorquot;:quot;entity previously deletedquot;}

135. $ curl -i http://localhost:9292/todos/abc/versions

136. $ curl -i http://localhost:9292/todos/abc/versions
HTTP/1.1 200 OK
Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT
ETag: quot;22116ccbc80e6356aec956be63c9c440quot;
Link: <http://localhost:9292/todos/abc/versions/_resolved>;
rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot;
Cache-Control: proxy-revalidate
Content-Type: application/json
Content-Length: 157
{
quot;urisquot;:[
quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;,
quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;
],
quot;totalquot;:2,
quot;offsetquot;:0
}

137. Uniform Interface

138. RESTful Collections

139. Addressable Nouns

140. Manipulate with HTTP Methods

141. Expose Relationships with Links

142. Fully Discoverable API

143. What’s Missing?

144. Ability to Ask Questions

145. Pagination
/todos?page=2&limit=50

146. Querying
/todos?user=http://joncrosby.me
/todos?only=title

147. Uniform Interface

148. Uniform Interface
... for querying?

149. JSONQuery
Kris Zyp
http://www.sitepen.com/blog/2008/07/16/jsonquery-data-querying-beyond-jsonpath/

150. XPath

151. XPath=> JSONPath
http://goessner.net/articles/JsonPath/

152. Array Slice Operators
/todos[10:20]

153. Array Slice Operators
/todos[10:20:2]

154. Comparisons
/todos[?priority>=3]

155. Chained Expressions
/todos[?priority>=3][0:5]

156. Extractions
/todos[=name]

157. Sorting
/todos[/priority][name]

158. Recursive Finders
/todos[objectid..firstName]

159. Unions
/todos[?foo=‘bar’,rating=4]

160. JSONQuery.js
http://github.com/jcrosby/jsonquery

161. jquery.cloudkit.js
http://github.com/jcrosby/jquery-cloudkit

162. var store = $.cloudkit;
store.boot({
success: function() {
// do something
},
error: function(status) {
// fail gracefully
}
});

163. var store = $.cloudkit;
store.boot({
success: function() {
// do something
},
error: function(status) {
// fail gracefully
}
});

164. var store = $.cloudkit;
store.boot({
success: function() {
// do something
},
error: function(status) {
// fail gracefully
}
});

165. store.boot
1) Local collection per remote collection
2) Loads remote data

166. store.boot
1) Local collection per remote collection
2) Loads remote data

167. store.boot
1) Local collection per remote collection
2) Loads remote data

168. var store = $.cloudkit;
store.boot({
success: function() {
// do something
},
error: function(status) {
// fail gracefully
}
});

169. var store = $.cloudkit;
store.boot({
success: function() {
// do something
},
error: function(status) {
// fail gracefully
}
});

170. // insert a 'todo'
store.collection('todos').create({name:quot;fooquot;}, {
success: function(todo) {
// do something with the todo
alert(todo.json().name);
}
});

171. // insert a 'todo'
store.collection('todos').create({name:quot;fooquot;}, {
success: function(todo) {
// do something with the todo
alert(todo.json().name);
}
});

172. // insert a 'todo'
store.collection('todos').create({name:quot;fooquot;}, {
success: function(todo) {
// do something with the todo
alert(todo.json().name);
}
});

173. // insert a 'todo'
store.collection('todos').create({name:quot;fooquot;}, {
success: function(todo) {
// do something with the todo
alert(todo.json().name);
}
});

174. // insert a 'todo'
store.collection('todos').create({name:quot;fooquot;}, {
success: function(todo) {
// do something with the todo
alert(todo.json().name);
}
});

175. // update the 'todo'
todo.update({name:quot;barquot;} {
success: function() {
// updated remotely, ready for use
alert(todo.json().name); // now “bar”
},
error: function(status) {
// fail gracefully or recover
}
});

176. // update the 'todo'
todo.update({name:quot;barquot;} {
success: function() {
// updated remotely, ready for use
alert(todo.json().name); // now “bar”
},
error: function(status) {
// fail gracefully or recover
}
});

177. // update the 'todo'
todo.update({name:quot;barquot;} {
success: function() {
// updated remotely, ready for use
alert(todo.json().name); // now “bar”
},
error: function(status) {
// fail gracefully or recover
}
});

178. // update the 'todo'
todo.update({name:quot;barquot;} {
success: function() {
// updated remotely, ready for use
alert(todo.json().name); // now “bar”
},
error: function(status) {
// fail gracefully or recover
}
});

179. // update the 'todo'
todo.update({name:quot;barquot;} {
success: function() {
// updated remotely, ready for use
alert(todo.json().name); // now “bar”
},
error: function(status) {
// fail gracefully or recover
}
});

180. Recovery
410 => Remove Locally? Create New?

181. Recovery
410 => Remove Locally? Create New?
412 => Progressive Diff/Merge

182. Recovery
410 => Remove Locally? Create New?
412 => Progressive Diff/Merge (Sync)

183. // delete the 'todo'
todo.destroy({
success: function() {
// the 'todo' has now been deleted
}
});

184. // delete the 'todo'
todo.destroy({
success: function() {
// the 'todo' has now been deleted
}
});

185. // delete the 'todo'
todo.destroy({
success: function() {
// the 'todo' has now been deleted
}
});

186. // delete the 'todo'
todo.destroy({
success: function() {
// the 'todo' has now been deleted
}
});

187. store.collection('todos').query(quot;?name='foo'quot;);

189. Johnson
Ruby/JavaScript Bridge
http://github.com/jbarnette/johnson

190. 1.0 Roadmap

191. JSONSchema
/:collection/_schema
http://www.json.com/json-schema-proposal/

192. {
quot;descriptionquot;:quot;A personquot;,
quot;typequot;:quot;objectquot;,
quot;propertiesquot;: {
quot;namequot;: {
quot;typequot;:quot;stringquot;
},
quot;agequot;: {
quot;typequot;:quot;integerquot;,
quot;maximumquot;:125
}
}
}

193. Open Web
JSON
Appliance

194. Open Web
JSON
Appliance

195. require ‘cloudkit’
expose :todos, :profiles

196. require ‘cloudkit’
contain :todos, :profiles

197. OpenID
+
OAuth
+
OAuth/Discovery

198. Browser
OAuth OpenID Service

199. Browser
OAuth OpenID Service

200. Browser
{...}
OAuth OpenID Service

201. Browser
OAuth OpenID Service

202. Browser
OAuth OpenID Service
{...}
Login

204. Browser
OAuth OpenID Service

205. Browser
OAuth OpenID Service

206. Browser
OAuth OpenID Service

207. Service or Desktop App
OAuth OpenID Service

208. Service or Desktop App
OAuth OpenID Service

209. Service or Desktop App
{...}
OAuth OpenID Service

210. Service or Desktop App
OAuth OpenID Service

211. Service or Desktop App
OAuth OpenID Service
{...}
Login

212. curl -i http://localhost:9292/todos
HTTP/1.1 401 Unauthorized
Connection: close
Date: Thu, 15 Jan 2009 22:24:23 GMT
WWW-Authenticate: OAuth realm=quot;http://localhost:9292quot;
Link: <http://localhost:9292/oauth/meta>;
rel=quot;http://oauth.net/discovery/1.0/rel/providerquot;
Content-Type: text/html
Set-Cookie: rack.session=d6b1c6aa6d463a478eb9af0e921eb997;
path=/; HttpOnly
Content-Length: 1280
<!DOCTYPE html PUBLIC quot;-//W3C//DTD XHTML 1.0 Transitional//ENquot;
quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtdquot;>
<html xmlns=quot;http://www.w3.org/1999/xhtmlquot; xml:lang=quot;enquot; lang=quot;enquot;>
... etc ...

213. $ curl -i http://localhost:9292/oauth/meta

214. $ curl -i http://localhost:9292/oauth/meta
<?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?>
<XRD>
<Type>http://oauth.net/discovery/1.0</Type>
<Service>
<Type>http://oauth.net/discovery/1.0/rel/provider</Type>
<URI>http://localhost:9292/oauth</URI>
</Service>
</XRD>

215. $ curl -i http://localhost:9292/oauth

216. (squint)

217. <?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?>
<XRDS xmlns=quot;xri://$xrdsquot;>
<XRD xml:id=quot;oauthquot; xmlns:simple=quot;http://xrds-simple.net/core/1.0quot; xmlns=quot;xri://$XRD*($v*2.0)quot; version=quot;2.0quot;>
<Type>xri://$xrds*simple</Type>
<Expires>2009-02-14T22:27:50Z</Expires>
<Service priority=quot;10quot;>
<Type>http://oauth.net/core/1.0/endpoint/request</Type>
<Type>http://oauth.net/core/1.0/parameters/auth-header</Type>
<Type>http://oauth.net/core/1.0/parameters/uri-query</Type>
<Type>http://oauth.net/core/1.0/signature/PLAINTEXT</Type>
<URI>http://localhost:9292/oauth/request_tokens</URI>
</Service>
<Service priority=quot;10quot;>
<Type>http://oauth.net/core/1.0/endpoint/authorize</Type>
<Type>http://oauth.net/core/1.0/parameters/uri-query</Type>
<URI>http://localhost:9292/oauth/authorization</URI>
</Service>
<Service priority=quot;10quot;>
<Type>http://oauth.net/core/1.0/endpoint/access</Type>
<Type>http://oauth.net/core/1.0/parameters/auth-header</Type>
<Type>http://oauth.net/core/1.0/parameters/uri-query</Type>
<Type>http://oauth.net/core/1.0/signature/PLAINTEXT</Type>
<URI>http://localhost:9292/oauth/access_tokens</URI>
</Service>
<Service priority=quot;10quot;>
<Type>http://oauth.net/core/1.0/endpoint/resource</Type>
<Type>http://oauth.net/core/1.0/parameters/auth-header</Type>
<Type>http://oauth.net/core/1.0/parameters/uri-query</Type>
<Type>http://oauth.net/core/1.0/signature/HMAC-SHA1</Type>
</Service>
<Service priority=quot;10quot;>
<Type>http://oauth.net/discovery/1.0/consumer-identity/static</Type>
<LocalID>cloudkitconsumer</LocalID>
</Service>
</XRD>
<XRD xmlns=quot;xri://$XRD*($v*2.0)quot; version=quot;2.0quot;>
<Type>xri://$xrds*simple</Type>
<Service priority=quot;10quot;>
<Type>http://oauth.net/discovery/1.0</Type>
<URI>#oauth</URI>
</Service>
</XRD>
</XRDS>

218. Service or Desktop App
OAuth OpenID Service

219. Service or Desktop App
OAuth OpenID Service

220. Service or Desktop App
OAuth OpenID Service

221. Service or Desktop App
OAuth OpenID Service

222. 1.0

223. JSONQuery Release

224. JSONSchema Release

225. Templating

226. Done

227. CloudKit
http://getcloudkit.com
http://joncrosby.me