Presentation given at the London Node Users Group, 2011

1. The Globals Database Its significance for Node.js developers Rob Tweed M/Gateway Developments Ltd http://www.mgateway.com Twitter: @rtweed

5. Globals Database http://globalsdb.org

9. Simple key/value storage telephone “617-555-1414” “Tweed, Rob” “211-555-9012” “James, George” telephone[“617-555-1414”] == “Tweed, Rob”

10. Multi-dimensional structures “firstNode” 5 “lastNode” 2 “node” 4 list “myList” “nodeCounter” 5 “nextNode” 2 “previousNode” 5 “value” “George” 5 “nextNode” 4 “value” “Rob” 2 “value” “John” “previousNode” 4

16. Objection, m’lud!

19. Introducing Q-Oper8 https://github.com/robtweed/Q-Oper8

20. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects

21. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Incoming request

22. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects If necessary, Put it on the queue

23. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects If child process is free, send first request Queue processing triggered

24. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Child process unavailable

25. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Process request

26. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Finished: Send back result object

27. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Process result and send response

28. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Child process available

29. Q-Oper8 architecture Main Node.js server process Pre-spawned Child processes Queue of request objects Queue processing triggered

31. Q-Oper8 + Globals Main Node.js server process Pre-spawned Child processes Queue of request objects Pure async activity here Globals db APIs Globals db APIs Globals db APIs

35. Q-Oper8 + Globals

36. Q-Oper8 + Globals Sync Async parallel Async nested Requests/ sec No of Global Sets per request 1 2 5

37. Q-Oper8 + Globals Requests/ Sec (Sync) No of Global Sets per request 1000 500 200 100

38. Q-Oper8 + Globals Global sets/ Sec (Sync) No of Global Sets per request 1000 500 200 100

45. Appendix