scenario-app-to-winsvc.md

Service from a GUI app

• You have an application with a GUI
  • From 20+ years ago
  • Uses files instead of a Database
  • QuickReport
• Customer wants REST API for website
  • By sending JSON or File
  • And getting a JSON result
  • Or a PDF report

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Windows service

• Made Windows services before
• Access to QuickReport
• No complicated changes needed
• Just a lot of refactoring
• And appropriate locking

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Setting up a REST API

• Choose your poison
  • TMS Aurelius XData)
  • MARS
  • DMVCFramework
  • RAD Server
  • Many more

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It's alive!

• It worked... mostly
• Awkward installation when updating
• Mostly useless Desktop
• No scaling possible
• But worst of all: random Printer errors
  • "Printer out of range"
  • To fix: restart service

Note:

• Scaling possible but not trivial
• Also multiple Windows servers, but seems wasteful