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Cached records expiring doesn't "propagate" or "pull" or "push" anything. Cached records mean the next request will result in a cache miss, and so a higher lev
by Nevermark 5y ago
Cached records expiring doesn't "propagate" or "pull" or "push" anything.
Cached records mean the next request will result in a cache miss, and so a higher level request up the chain.
When that happens, a record is copied down the chain. Regardless of the mechanism, the data is now propagating.
- IncRnd 5y agoThat's mostly correct, but a new record isn't always propagated down the chain when there is a cache miss. Other resolvers may not yet have the updated record.