Videos / DevOps

Episode 13 of 14 · DevOps, end to end

CDNs and object storage: bytes near the user, bytes that never move

Chapters

1. A counter, not shelves0:00
2. The key is not a path0:15
3. Writes are whole0:32
4. Metadata rides with the bytes0:49
5. Eleven nines, measured1:07
6. Durability is not a backup1:26
7. Two people, one page1:43
8. There are no locks2:01
9. Versions and markers2:18
10. Written once, on purpose2:35
11. Tiers and their catch2:54
12. The rules that move it down3:14
13. Distance is the enemy3:33
14. Hit, and miss3:50
15. The cache key4:07
16. The ratio everything rests on4:23
17. The thundering herd4:41
18. The pair, as everyone ships it5:00
19. The expiry date, printed5:17
20. The two everyone mixes up5:34
21. The fingerprint and the 3045:51
22. Stale, and served anyway6:08
23. Immutable6:26
24. Two piles, done6:41
25. Recalling a newspaper7:00
26. What a purge really is7:16
27. The cache you cannot reach7:32
28. Rename, do not purge7:48
29. The one mutable file8:03
30. Tags, for the unhashable8:23
31. A ticket that expires8:40
32. Uploads that skip your server8:57
33. A link is a bearer token9:13
34. The origin shield9:29
35. The bill nobody models9:48
36. Four boring ways to overpay10:06
37. The whole thing10:26

CDNs and object storage: bytes near the user, bytes that never move. Start with what it is not. Object storage is not a disc, and it is not a filesystem. There are no directories, no file handles, no seeking to byte four thousand. There is a bucket,

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