Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Toronto MongoDB User Group

Avatar for Arthur Nogueira Neves Arthur Nogueira Neves
February 20, 2013
Technology
1
85

Toronto MongoDB User Group

Presetation given on Toronto MongoDB User group
Avatar for Arthur Nogueira Neves

Arthur Nogueira Neves

February 20, 2013
Tweet

More Decks by Arthur Nogueira Neves

See All by Arthur Nogueira Neves
Using multiple connections in ActiveRecord
Avatar for Arthur Nogueira Neves arthurnn
3
960
Rails talk - RubyLightningTalksTO
Avatar for Arthur Nogueira Neves arthurnn
0
94
Abril Pro Ruby
Avatar for Arthur Nogueira Neves arthurnn
0
330

Other Decks in Technology

See All in Technology
KiCadでPad on Viaの基板作ってみた
Avatar for misoji engineer iotengineer22
0
300
マーケットプレイス版Oracle WebCenter Content For OCI
Avatar for oracle4engineer oracle4engineer
PRO
3
960
開発生産性を測る前にやるべきこと - 組織改善の実践 / Before Measuring Dev Productivity
Avatar for 株式会社カオナビ kaonavi
9
4.2k
【５分でわかる】セーフィー エンジニア向け会社紹介
Avatar for Safie safie_recruit
0
27k
CRE Camp #1 エンジニアリングを民主化するCREチームでありたい話
Avatar for MNTSQ mntsq
1
120
Lufthansa ®️ USA Contact Numbers: Complete 2025 Support Guide
Avatar for danielconkling870 lufthanahelpsupport
0
190
OPENLOGI Company Profile for engineer
Avatar for OPENLOGI hr01
1
34k
american airlines®️ USA Contact Numbers: Complete 2025 Support Guide
Avatar for cassowary3740 supportflight
1
110
fukabori.fm 出張版: 売上高617億円と高稼働率を陰で支えた社内ツール開発のあれこれ話 / 20250704 Yoshimasa Iwase & Tomoo Morikawa
Avatar for SHIFT EVOLVE shift_evolve
PRO
2
7.6k
ビズリーチが挑む メトリクスを活用した技術的負債の解消 / dev-productivity-con2025
Avatar for Visional Engineering ＆ Design visional_engineering_and_design
3
7.5k
自律的なスケーリング手法FASTにおけるVPoEとしてのアカウンタビリティ / dev-productivity-con-2025
Avatar for Yoshiki Iida yoshikiiida
1
16k
第４回Snowflake 金融ユーザー会 Snowflake summit recap
Avatar for Makoto tamaoki
1
280

Featured

See All Featured
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
Avatar for Addy Osmani addyosmani
7
740
The Web Performance Landscape in 2024 [PerfNow 2024]
Avatar for Tammy Everts tammyeverts
8
690
Fantastic passwords and where to find them - at NoRuKo
Avatar for Phil Nash philnash
51
3.3k
Fight the Zombie Pattern Library - RWD Summit 2016
Avatar for Marcelo Somers marcelosomers
233
17k
BBQ
Avatar for Matthew Crist matthewcrist
89
9.7k
XXLCSS - How to scale CSS and keep your sanity
Avatar for Zaharenia Atzitzikaki sugarenia
248
1.3M
A Modern Web Designer's Workflow
Avatar for Chris Coyier chriscoyier
695
190k
Git: the NoSQL Database
Avatar for Brandon Keepers bkeepers
PRO
430
65k
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
379
70k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
Avatar for Rebecca Miller-Webster rmw
34
3.1k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
Avatar for Stéphanie Walter stephaniewalter
281
13k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
26
2.9k

Transcript

  1. MongoDB Toronto User group 1 Saturday, 23 February, 13

  2. Hi. 2 Saturday, 23 February, 13

  3. Hi. @arthurnn 2 Saturday, 23 February, 13

  4. Hi. @arthurnn 2 Saturday, 23 February, 13

  5. Hi. @arthurnn 2 Saturday, 23 February, 13

  6. 3 Saturday, 23 February, 13

  7. Tech 4 Saturday, 23 February, 13

  8. Tech 4 Saturday, 23 February, 13

  9. Tech 4 Saturday, 23 February, 13

  10. Tech 4 Saturday, 23 February, 13

  11. Tech 4 Saturday, 23 February, 13

  12. RPC Tech 4 Saturday, 23 February, 13

  13. Databases 5 Saturday, 23 February, 13

  14. Databases 5 Saturday, 23 February, 13

  15. Databases 5 Saturday, 23 February, 13

  16. Databases Memcached 5 Saturday, 23 February, 13

  17. Databases Memcached Sphinx -> ElasticSearch 5 Saturday, 23 February, 13

  18. + 6 Saturday, 23 February, 13

  19. + Activity Feed 6 Saturday, 23 February, 13

  20. + Activity Feed User Settings 6 Saturday, 23 February, 13

  21. + Activity Feed User Settings Push Notification 6 Saturday, 23

    February, 13

  22. + Activity Feed User Settings Push Notification Device track 6

    Saturday, 23 February, 13

  23. + Activity Feed User Settings Push Notification Device track Stats

    6 Saturday, 23 February, 13

  24. Servers 1.0 7 Saturday, 23 February, 13

  25. Servers 1.0 mongod primary 7 Saturday, 23 February, 13

  26. Servers 1.0 mongod primary mongod secondary 7 Saturday, 23 February,

    13

  27. Servers 1.0 mongod primary mongod secondary mongod secondary 7 Saturday,

    23 February, 13

  28. Servers 1.0 mongod primary mongod secondary mongod secondary mongod hidden

    7 Saturday, 23 February, 13

  29. Servers 2.0 mongod mongod mongod mongod mongod mongod Primary mongod

    mongoc mongod mongoc mongod mongoc Main 8 Saturday, 23 February, 13

  30. Servers 2.0 mongod mongod mongod mongod mongod mongod Primary mongod

    mongoc mongod mongoc mongod mongoc mongod Main 8 Saturday, 23 February, 13

  31. Servers 2.0 mongod mongod mongod mongod mongod mongod Primary mongod

    mongoc mongod mongoc mongod mongoc mongod mongod Main 8 Saturday, 23 February, 13

  32. Servers 2.0 mongod mongod mongod mongod mongod mongod Primary mongod

    mongoc mongod mongoc mongod mongoc mongod mongod mongod Main 8 Saturday, 23 February, 13

  33. Servers 2.0 mongod mongod mongod mongod mongod mongod Primary mongod

    mongoc mongod mongoc mongod mongoc mongod mongod mongod Main 8 Saturday, 23 February, 13

  34. User Settings { "_id" : 123, "stats_page_empty" : true, "statistics_page_order"

    : [ 1, 4, 2, 3 ] } 9 Saturday, 23 February, 13

  35. Push notifications { "_id" : ObjectId("4fe60f72a3a6a5654b000001"), "status" : 24, "user_id"

    : 1, "photo_id" : 8026403, "actors" : [ 71 ], "action_id" : 0, "updated_at" : ISODate("2012-06-23T18:48:18Z"), "created_at" : ISODate("2012-06-23T18:48:18Z") } { "_id" : ObjectId("4ffc9eb55328f538ad00002d"), "permissions" : [ 0, 1, 5, 10 ], "type" : 1, "user_id" : 357534, "token" : "xxxx xxxx xxxx" } db.mobile_devices db.mobile_notifications 10 Saturday, 23 February, 13

  36. Push notifications { "_id" : ObjectId("4fe60f72a3a6a5654b000001"), "status" : 24, "user_id"

    : 1, "photo_id" : 8026403, "actors" : [ 71 ], "action_id" : 0, "updated_at" : ISODate("2012-06-23T18:48:18Z"), "created_at" : ISODate("2012-06-23T18:48:18Z") } { "_id" : ObjectId("4ffc9eb55328f538ad00002d"), "permissions" : [ 0, 1, 5, 10 ], "type" : 1, "user_id" : 357534, "token" : "xxxx xxxx xxxx" } db.mobile_devices db.mobile_notifications index: {"user_id": 1} 10 Saturday, 23 February, 13

  37. Push notifications { "_id" : ObjectId("4fe60f72a3a6a5654b000001"), "status" : 24, "user_id"

    : 1, "photo_id" : 8026403, "actors" : [ 71 ], "action_id" : 0, "updated_at" : ISODate("2012-06-23T18:48:18Z"), "created_at" : ISODate("2012-06-23T18:48:18Z") } { "_id" : ObjectId("4ffc9eb55328f538ad00002d"), "permissions" : [ 0, 1, 5, 10 ], "type" : 1, "user_id" : 357534, "token" : "xxxx xxxx xxxx" } db.mobile_devices db.mobile_notifications index: {"token": 1}, {sparse: true} index: {"user_id": 1} 10 Saturday, 23 February, 13

  38. Push notifications { "_id" : ObjectId("4fe60f72a3a6a5654b000001"), "status" : 24, "user_id"

    : 1, "photo_id" : 8026403, "actors" : [ 71 ], "action_id" : 0, "updated_at" : ISODate("2012-06-23T18:48:18Z"), "created_at" : ISODate("2012-06-23T18:48:18Z") } { "_id" : ObjectId("4ffc9eb55328f538ad00002d"), "permissions" : [ 0, 1, 5, 10 ], "type" : 1, "user_id" : 357534, "token" : "xxxx xxxx xxxx" } db.mobile_devices db.mobile_notifications index: {"token": 1}, {sparse: true} index: {"registration_id": 1}, {sparse: true} index: {"user_id": 1} 10 Saturday, 23 February, 13

  39. Push notifications { "_id" : ObjectId("4fe60f72a3a6a5654b000001"), "status" : 24, "user_id"

    : 1, "photo_id" : 8026403, "actors" : [ 71 ], "action_id" : 0, "updated_at" : ISODate("2012-06-23T18:48:18Z"), "created_at" : ISODate("2012-06-23T18:48:18Z") } { "_id" : ObjectId("4ffc9eb55328f538ad00002d"), "permissions" : [ 0, 1, 5, 10 ], "type" : 1, "user_id" : 357534, "token" : "xxxx xxxx xxxx" } db.mobile_devices db.mobile_notifications index: {"token": 1}, {sparse: true} index: {"registration_id": 1}, {sparse: true} index: {"user_id": 1} index: {"user_id": 1} 10 Saturday, 23 February, 13

  40. Push notifications { "_id" : ObjectId("4fe60f72a3a6a5654b000001"), "status" : 24, "user_id"

    : 1, "photo_id" : 8026403, "actors" : [ 71 ], "action_id" : 0, "updated_at" : ISODate("2012-06-23T18:48:18Z"), "created_at" : ISODate("2012-06-23T18:48:18Z") } { "_id" : ObjectId("4ffc9eb55328f538ad00002d"), "permissions" : [ 0, 1, 5, 10 ], "type" : 1, "user_id" : 357534, "token" : "xxxx xxxx xxxx" } db.mobile_devices db.mobile_notifications index: {"token": 1}, {sparse: true} index: {"registration_id": 1}, {sparse: true} index: {"user_id": 1} index: {"user_id": 1, "updated_at": -1} index: {"user_id": 1} 10 Saturday, 23 February, 13

  41. Activity Feed - Flow 200M+ { "_id" : ObjectId(""), "aid"

    : 1127689, # Actor id "otype" : 9, # Object type for cast "v" : 7, # Verb of the action "oid" : 25000475, # Object id "uid" : 1127689 # User id } 11 Saturday, 23 February, 13

  42. db.ensureIndex ??? { aid: 1 } { aid: 1, _id:

    1 } { _id: 1, aid: 1 } { aid: 1, v: 1, _id: 1 } 12 Saturday, 23 February, 13

  43. Data access 13 Saturday, 23 February, 13

  44. Data access db.activities.find( aid: 22, v: {'$in': [2,3,4]}) .sort(_id: -1).limit(10)

    13 Saturday, 23 February, 13

  45. { aid: 1 } 14 Saturday, 23 February, 13

  46. { aid: 1, v:1 } { aid: 1, v:1, _id:

    -1 } 15 Saturday, 23 February, 13

  47. { aid: 1, _id: -1 } { aid: 1, _id:

    -1, v: 1 } 16 Saturday, 23 February, 13

  48. 17 Saturday, 23 February, 13

  49. db.activities.find( aid: {'$in': [1,10]}, v: {'$in': [2,3,4]}) .sort(_id: -1).limit(10) 17

    Saturday, 23 February, 13

  50. Shard key ??? 18 Saturday, 23 February, 13

  51. Shard key ??? { aid: 1, v: 1, _id: 1

    } 18 Saturday, 23 February, 13

  52. Mistakes on shard 19 Saturday, 23 February, 13

  53. Mistakes on shard Automatic shard 19 Saturday, 23 February, 13

  54. Mistakes on shard Automatic shard SSDs on Primaries 19 Saturday,

    23 February, 13

  55. After sharding? 20 Saturday, 23 February, 13

  56. After sharding? Good performance on writes 20 Saturday, 23 February,

    13

  57. After sharding? Good performance on User Flow reads Good performance

    on writes 20 Saturday, 23 February, 13

  58. After sharding? Good performance on User Flow reads Bad performance

    on Friends Flow reads Good performance on writes 20 Saturday, 23 February, 13

  59. Solutions: 21 Saturday, 23 February, 13

  60. Solutions: #1: denormalize 21 Saturday, 23 February, 13

  61. { "_id" : ObjectId(""), "user" : 123, # viewer "page"

    : 1, "feed" : [{activity}, {activity}] } Flow Feed by user 22 Saturday, 23 February, 13

  62. { "_id" : ObjectId(""), "user" : 123, # viewer "page"

    : 1, "feed" : [{activity}, {activity}] } Flow Feed by user Fan out on write 22 Saturday, 23 February, 13

  63. Solutions: #1: denormalize 23 Saturday, 23 February, 13

  64. Solutions: #1: denormalize #2: cache 23 Saturday, 23 February, 13

  65. key: user_id 24 Saturday, 23 February, 13

  66. key: user_id prepend activity 24 Saturday, 23 February, 13

  67. key: user_id prepend activity activity append 24 Saturday, 23 February,

    13

  68. key: user_id prepend activity activity append activity append 24 Saturday,

    23 February, 13

  69. Future Denormaziled solution. 25 Saturday, 23 February, 13

  70. Thank you 26 Saturday, 23 February, 13