PostgreSQL as a secret weapon for high-performance ... - PGCon

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Rails Performance > Access Control Optimization Effect: can_do_1 = user.roles.any { |role| role.privilege1? } > 2.1 sec can_do_1 = ActiveRecord::ConnectionAdapters::Column. value_to_boolean(user.privilege1) > 64 msec !!! Gleb Arshinov & Alex Dymo ● PostgreSQL as a secret weapon for high-performance Ruby on Rails applications ● PGCon 2010 36 / 58
Rails Performance > Aggregations Perform calculations and aggregations on large datasets in SQL: real life example: 600 000 data rows, 3-dimensional OLAP cube, slicing and aggregation: Ruby:~1 Gb RAM, ~90 sec SQL: up to 5 sec Gleb Arshinov & Alex Dymo ● PostgreSQL as a secret weapon for high-performance Ruby on Rails applications ● PGCon 2010 37 / 58
Page 1 and 2: Gleb Arshinov, Alexander Dymo PGCon
Page 3 and 4: Web Development Pains ● Performan
Page 5 and 6: Outline ● Rails as ORM ● Optimi
Page 7 and 8: Rails as ORM > Myths and Realities
Page 9 and 10: Rails as ORM > Multiplying Queries
Page 11 and 12: Rails as ORM > Generating Queries 4
Page 13 and 14: Rails as ORM > Query Tests rev 834:
Page 15 and 16: Rails as ORM > Query Tests rev 834:
Page 17 and 18: Rails as ORM > Query Tests module A
Page 19 and 20: Rails as ORM > Data Integrity ● M
Page 21 and 22: Rails Performance > Ruby ● Good l
Page 23 and 24: Rails Performance > Rails ● Has a
Page 25 and 26: Rails Performance > Performance Tes
Page 27 and 28: Rails Performance > Solution Scalab
Page 29 and 30: Rails Performance > Solution Delega
Page 31 and 32: Rails Performance > Attribute Prelo
Page 33 and 34: Rails Performance > Access Control
Page 35: Rails Performance > Access Control
Page 39 and 40: Postgres Experience > Good Things G
Page 41 and 42: Postgres Experience > Limitations A
Page 43 and 44: Postgres Experience > Limit/Offset
Page 45 and 46: Postgres Experience > in() and Join
Page 47 and 48: Postgres Experience > generate_seri
Page 49 and 50: Postgres Approaches ● Benchmarkin
Page 51 and 52: Optimize Database > Basics How to o
Page 53 and 54: Optimize Database > Shared Database
Page 55 and 56: Optimize Database > Shared Database
Page 57 and 58: Optimize Database > Postgres Config

PostgreSQL as a secret weapon for high-performance ... - PGCon

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