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Writing CouchDB Views using ClojureScript

C
cemerick

The document discusses creating CouchDB views using ClojureScript and highlights Chas Emerick's experience in the field. It covers CouchDB's document-oriented architecture, the use of views for secondary indexing, and the advantages of using ClojureScript for view functions over JavaScript. Additionally, it addresses current issues with ClojureScript such as its library status and optimization challenges.

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Writing CouchDB Views using ClojureScript Chas Emerick @cemerick http://cemerick.com http://snowtide.com Tuesday, October 11, 2011
@cemerick Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
@cemerick Founded Snowtide in 2001 Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
@cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
@cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Contributor to Clojure language & libraries Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
@cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Contributor to Clojure language & libraries CouchDB user since 2009? Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
@cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Contributor to Clojure language & libraries CouchDB user since 2009? O’Reilly author Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ • viz. materialized views in SQL-land Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ • viz. materialized views in SQL-land • Defined by Javascript functions applied within a flavour of map/reduce Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ • viz. materialized views in SQL-land • Defined by Javascript functions applied within a flavour of map/reduce • Same mechanism used elsewhere (filters, validation, etc) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch • CouchDB library for Clojure Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch • CouchDB library for Clojure • (Javascript) view creation and querying support: Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch • CouchDB library for Clojure • (Javascript) view creation and querying support: (save-­‐view  "count"  :number-­‐of-­‐players    {:map  "function(d){for  (var  k  in  d.players)  {emit(d.players[k],1);}}"      :reduce  "function  (keys,  values)  {  return  sum(values);  }"}) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
“Javascript sucks” Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
“Javascript sucks” Q.E.D. Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch: Clojure view server Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch: Clojure view server • Use Clojure to write view functions: Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) • Better, but: Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) • Better, but: • Increases operational complexity Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) • Better, but: • Increases operational complexity • Won’t work on hosted platforms, e.g. Cloudant Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
ClojureScript Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
ClojureScript • Clojure : JVM :: ClojureScript : JavaScript Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
ClojureScript • Clojure : JVM :: ClojureScript : JavaScript • Ahead-of-time compilation (no eval) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
ClojureScript • Clojure : JVM :: ClojureScript : JavaScript • Ahead-of-time compilation (no eval) • (Optionally) uses Google Closure’s optimizing compiler Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
ClojureScript • Clojure : JVM :: ClojureScript : JavaScript • Ahead-of-time compilation (no eval) • (Optionally) uses Google Closure’s optimizing compiler • Eliminate need for Clojure/Clutch view server & need to write views in JavaScript! Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Demo Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit    (array  (aget  doc  “a”) Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit    (array  (aget  doc  “a”)                  (aget  doc  “b”)) Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit    (array  (aget  doc  “a”)                  (aget  doc  “b”))    (aget  doc  “c”)) Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Current issues Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Current issues • ClojureScript is not a library (yet!) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Current issues • ClojureScript is not a library (yet!) • Cannot be depended upon in Leiningen/ Maven Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Current issues • ClojureScript is not a library (yet!) • Cannot be depended upon in Leiningen/ Maven • Cannot target / test against particular versions (there aren’t any) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Current issues • ClojureScript is not a library (yet!) • Cannot be depended upon in Leiningen/ Maven • Cannot target / test against particular versions (there aren’t any) • Incomplete optimization: lots of code generated to define the simplest view Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Thank you! snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Thank you! • CouchDB: http://couchdb.apache.org snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Thank you! • CouchDB: http://couchdb.apache.org • Clutch: http://github.com/ashafa/clutch snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Thank you! • CouchDB: http://couchdb.apache.org • Clutch: http://github.com/ashafa/clutch • ClojureScript: https://github.com/clojure/ clojurescript snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
Thank you! • CouchDB: http://couchdb.apache.org • Clutch: http://github.com/ashafa/clutch • ClojureScript: https://github.com/clojure/ clojurescript • Clutch-ClojureScript: http://github.com/ cemerick/clutch-clojurescript snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011

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Writing CouchDB Views using ClojureScript

  • 1. Writing CouchDB Views using ClojureScript Chas Emerick @cemerick http://cemerick.com http://snowtide.com Tuesday, October 11, 2011
  • 2. @cemerick Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 3. @cemerick Founded Snowtide in 2001 Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 4. @cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 5. @cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Contributor to Clojure language & libraries Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 6. @cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Contributor to Clojure language & libraries CouchDB user since 2009? Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 7. @cemerick Founded Snowtide in 2001 Clojure full-time since 2008 Contributor to Clojure language & libraries CouchDB user since 2009? O’Reilly author Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 8. CouchDB in 1 minute Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 9. CouchDB in 1 minute • Document-oriented data store Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 10. CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 11. CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 12. CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 13. CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ • viz. materialized views in SQL-land Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 14. CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ • viz. materialized views in SQL-land • Defined by Javascript functions applied within a flavour of map/reduce Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 15. CouchDB in 1 minute • Document-oriented data store • (Primary) key => JSON object • HTTP API • Secondary indexes / queries provided by ‘views’ • viz. materialized views in SQL-land • Defined by Javascript functions applied within a flavour of map/reduce • Same mechanism used elsewhere (filters, validation, etc) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 16. Clutch Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 17. Clutch • CouchDB library for Clojure Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 18. Clutch • CouchDB library for Clojure • (Javascript) view creation and querying support: Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 19. Clutch • CouchDB library for Clojure • (Javascript) view creation and querying support: (save-­‐view  "count"  :number-­‐of-­‐players    {:map  "function(d){for  (var  k  in  d.players)  {emit(d.players[k],1);}}"      :reduce  "function  (keys,  values)  {  return  sum(values);  }"}) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 20. “Javascript sucks” Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 21. “Javascript sucks” Q.E.D. Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 22. Clutch: Clojure view server Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 23. Clutch: Clojure view server • Use Clojure to write view functions: Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 24. Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 25. Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) • Better, but: Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 26. Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) • Better, but: • Increases operational complexity Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 27. Clutch: Clojure view server • Use Clojure to write view functions: (save-­‐view  "count"  :number-­‐of-­‐players    (with-­‐clj-­‐view-­‐server        {:map  (fn  [doc]  (map  #(vector  %  1)  (:players  doc)))          :reduce  (fn  [keys  values  _]  (reduce  +  values))})) • Better, but: • Increases operational complexity • Won’t work on hosted platforms, e.g. Cloudant Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 28. ClojureScript Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 29. ClojureScript • Clojure : JVM :: ClojureScript : JavaScript Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 30. ClojureScript • Clojure : JVM :: ClojureScript : JavaScript • Ahead-of-time compilation (no eval) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 31. ClojureScript • Clojure : JVM :: ClojureScript : JavaScript • Ahead-of-time compilation (no eval) • (Optionally) uses Google Closure’s optimizing compiler Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 32. ClojureScript • Clojure : JVM :: ClojureScript : JavaScript • Ahead-of-time compilation (no eval) • (Optionally) uses Google Closure’s optimizing compiler • Eliminate need for Clojure/Clutch view server & need to write views in JavaScript! Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 33. Demo Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 34. Language Mapping Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 35. Language Mapping Javascript Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 36. Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 37. Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 38. Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 39. Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit    (array  (aget  doc  “a”) Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 40. Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit    (array  (aget  doc  “a”)                  (aget  doc  “b”)) Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 41. Language Mapping Javascript emit([doc.a,  doc.b],  doc.c); ClojureScript (js/emit    (array  (aget  doc  “a”)                  (aget  doc  “b”))    (aget  doc  “c”)) Thankfully, you don’t need to do much if any interop in views… Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 42. Current issues Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 43. Current issues • ClojureScript is not a library (yet!) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 44. Current issues • ClojureScript is not a library (yet!) • Cannot be depended upon in Leiningen/ Maven Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 45. Current issues • ClojureScript is not a library (yet!) • Cannot be depended upon in Leiningen/ Maven • Cannot target / test against particular versions (there aren’t any) Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 46. Current issues • ClojureScript is not a library (yet!) • Cannot be depended upon in Leiningen/ Maven • Cannot target / test against particular versions (there aren’t any) • Incomplete optimization: lots of code generated to define the simplest view Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 47. Thank you! snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 48. Thank you! • CouchDB: http://couchdb.apache.org snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 49. Thank you! • CouchDB: http://couchdb.apache.org • Clutch: http://github.com/ashafa/clutch snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 50. Thank you! • CouchDB: http://couchdb.apache.org • Clutch: http://github.com/ashafa/clutch • ClojureScript: https://github.com/clojure/ clojurescript snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011
  • 51. Thank you! • CouchDB: http://couchdb.apache.org • Clutch: http://github.com/ashafa/clutch • ClojureScript: https://github.com/clojure/ clojurescript • Clutch-ClojureScript: http://github.com/ cemerick/clutch-clojurescript snipe book Chas Emerick @cemerick http://cemerick.com http://snowtide.com Chas Emerick: Writing CouchDB Views using ClojureScript Tuesday, October 11, 2011