Replicated Service Objects -- A Strategy for Distributed Applications
- 1. Martin is getting the projector to work with his laptop.
- 2. Replicated Service Objects A Strategy for Distributed Applications Martin McClure
- 4. 30 Years!
- 8. Object Database •One persistent “image” •Shared transactionally • Merged at commit • Conflicts are detected
- 9. GemBuilder for Smalltalk (GBS) •Interfaces VW or VA Smalltalk to GemStone
- 12. GemBuilder for Smalltalk (GBS) •Interfaces VW or VA Smalltalk to GemStone
- 13. GBS Main Features •Forwarders • Remote messaging •Replicates • Synchronized copy • (new) Remote messaging
- 36. n2
- 37. One Month
- 39. Lessons •Test scaling •Test with latency •Need better design pattern
- 42. Server Client
- 44. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary
- 45. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary
- 46. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary
- 47. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary
- 48. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary
- 49. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0' Dictionary
- 50. Server Client Inspector Service theObject properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> '0' 'y' -> '0' Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0' Dictionary
- 51. Server Client Inspector Service theObject properties Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0' Dictionary 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0'
- 52. Server Client Inspector Service theObject properties Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0' Dictionary 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0'
- 53. Server Client Inspector Service theObject properties Dictionary Inspector Service properties 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0' Dictionary 'self' -> '0@0' 'class' -> 'Point' 'x' -> ' 42 ' 'y' -> '0'
- 54. Principles •Replicate everything you'll need frequently
- 55. Principles •Represent information as basic objects when necessary.
- 56. Principles •Do everything you can predict in a single round trip.
- 57. Replicated Service Objects A Strategy for Distributed Applications Martin McClure