What was the rationale for mandating that recursive resolvers must decrement RRs TTLs but not SOA’s (especially the negative caching TTL)?
Makes sense, but a side effect is that when multiple caches are chained, negatively cached responses end up being cached way longer than expected. Decreasing TTLs mitigate this a bit.
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I don't understand? The negative TTL does decrease, and the decreasing TTL is exposed to downstream caches? E.g., 3600 → 3594 → 3566 in this screenshot:pic.twitter.com/dF1gxQLWXS
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