Alright, Time to Synchronize Our Watches...

on YouTube ↗48m

" summary

The talk explains how server time is measured and kept synchronized, including on serverless platforms, and discusses system clock mechanics and common pitfalls. It covers techniques for synchronizing time across distributed servers and why accurate clock synchronization can be crucial for distributed systems.

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" chapters (40)

1. 0:00Introduction
2. 1:07No time zones or calendars
3. 2:11Time measurement basics
4. 3:34System clock inaccuracies
5. 4:37Processor and motherboard timers
6. 5:41Clock impact on performance
7. 6:45Cloud and virtualization clocks
8. 8:07Java time measurement
9. 9:32System vs monotonic clocks
10. 10:56Java clock problems
11. 12:43Daylight saving in distributed systems
12. 13:24Waiting for exact time
13. 14:49Spring and Quartz clocks
14. 15:32Distributed sync problems
15. 16:37Alternative topics
16. 17:20Definition of second
17. 18:46UTC vs Earth time
18. 20:10Leap seconds impact
19. 21:14NTP time sync protocols
20. 23:42How NTP works
21. 25:47NTP sync accuracy
22. 26:49Monotonic clock benefits
23. 27:31Linux system clocks
24. 28:36Clocks in distributed systems
25. 29:19Clock desynchronization
26. 30:23Distributed sync algorithms
27. 31:48Transaction serialization
28. 33:51Locks in sync
29. 34:54EU time sync regulations
30. 35:40Financial fraud with clocks
31. 36:26Google TrueTime
32. 37:48Google sync tech
33. 38:49Atomic clocks and GPS
34. 40:14Relativity impact on GPS
35. 40:55Sync problem workarounds
36. 41:58Time oracles in distributed systems
37. 42:41Logical clocks
38. 43:43HybridLogicalClocks
39. 44:49Transaction serialization
40. 45:31Summary

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