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I suspect the same reason PostgreSQL has VACUUM. Immediate deletion can be expensive, and deletion can be cheaper if done in batch. On the other hand, they want
by sanxiyn 9y ago
I suspect the same reason PostgreSQL has VACUUM. Immediate deletion can be expensive, and deletion can be cheaper if done in batch. On the other hand, they want to make it immediately unreadable. Deleting key seems to be a good way to make something immediately unreadable while avoiding expensive immediate deletion.
- emodendroket 9y agoOK, yeah, if we're talking about some sort of tombstone operation I get it; I thought the claim was the nefarious overlords of Snapchat were keeping the data around, which was harder to understand.