The Long Sad History of MicroServices (Greg Young Technology Stream)
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The Long Sad History of MicroServices (Greg Young Technology Stream)
- 1. Long Sad History of MicroServices @GregYoung
- 14. Micro Services are not new
- 15. SOA was not invented in the 90s
- 16. Tons of prior art before SOA
- 18. –Martin Fowler "Service-Oriented Architecture (SOA) is a very broad term and practically meaningless. Microservices is a subset of SOA with the value being that it allows us to put a label on this useful subset of SOA terminology"
- 19. • Componentization, the ability to replace parts of a system, comparing with stereo components where each piece can be replaced independently from the others. • Organisation around business capabilities instead of around technology. • Smart endpoints and dumb pipes, explicitly avoiding the use of an Enterprise Service Bus (ESB). • Decentralised data management with one database for each service instead of one database for a whole company. • Infrastructure automation with continuous delivery being mandatory.
- 20. All are aspects of SOA done right!
- 21. SOA came before WebServices Alexander Pasik Oddly because client/server lost its meaning
- 22. but ...SOA was not invented in the 90s
- 23. What about...
- 25. But these were still based on prior art!
- 27. Sound Familiar?
- 28. VMS - Mailboxes
- 29. DEC INFININET 1983 -Erik Townsend
- 31. Began in 1987, Dunder Phase 1 1988
- 32. Smalltalk 71
- 34. Planner (60s)
- 35. We have been playing with these ideas for 50 years!
- 36. Before that we did the same but with people as services
- 38. 1st Law of Distributed Computing
- 39. Most should distribute for availability not scalability
- 40. Isolate
- 41. -Simon Brown “If you can't build a monolith what makes you think you can build distributed Microservices?”
- 42. But how many lines of code?!
- 43. Pros and Cons
- 44. DB per Service?
- 46. Many ways of isolating
- 47. S1 S2 S3 Async Events Client ClientClient Sync or Async ok
- 48. Avoid sync calls between services
- 50. Containers have a long sad history too! (many of the same cast!)
- 51. Much is "it depends"
- 52. Microservices are not a good fit for many business apps.
- 54. Queuing Theory
- 56. Tons of prior art here!
- 58. Avoid fads :(
- 59. Everything is trade offs.