Time and Concurrency

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Global state? Nope.

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Time and Concurrency

  1. 1. HTTPAPPDB<br />
  2. 2. HTTP HTTP HTTP HTTP HTTPAPPDB<br />
  3. 3. HTTP HTTP HTTP HTTP HTTPAPP APP APP APPDB<br />
  4. 4. HTTP HTTP HTTP HTTP HTTPAPP APP APP APPDB<br />
  5. 5. HTTP HTTP HTTP HTTP HTTPAPP APP APP APPDB<br />
  6. 6. HTTP HTTP HTTP HTTP HTTPAPP APP APP APPDB<br />
  7. 7. HTTP HTTP HTTP HTTP HTTPAPP APP APP APPDB<br />
  8. 8. we see the past<br />
  9. 9. Timestamps == BUGS<br />
  10. 10. Cause ?? Effect<br />
  11. 11. GLOBAL STATE<br />
  12. 12. GLOBAL STATE<br />
  13. 13. ACID<br />
  14. 14. BASE<br />
  15. 15. BASE<br />Basically Available  Soft State  Eventually Consistent<br />

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