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Diffstat (limited to 'plugin/cache/README.md')
| -rw-r--r-- | plugin/cache/README.md | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/plugin/cache/README.md b/plugin/cache/README.md index 6fc20ae2c..d516a91db 100644 --- a/plugin/cache/README.md +++ b/plugin/cache/README.md @@ -39,6 +39,7 @@ cache [TTL] [ZONES...] { serve_stale [DURATION] [REFRESH_MODE] servfail DURATION disable success|denial [ZONES...] + keepttl } ~~~ @@ -69,6 +70,11 @@ cache [TTL] [ZONES...] { greater than 5 minutes. * `disable` disable the success or denial cache for the listed **ZONES**. If no **ZONES** are given, the specified cache will be disabled for all zones. +* `keepttl` do not age TTL when serving responses from cache. The entry will still be removed from cache + when the TTL expires as normal, but until it expires responses will include the original TTL instead + of the remaining TTL. This can be useful if CoreDNS is used as an authoritative server and you want + to serve a consistent TTL to downstream clients. This is **NOT** recommended when CoreDNS is caching + records it is not authoritative for because it could result in downstream clients using stale answers. ## Capacity and Eviction @@ -135,4 +141,4 @@ example.org { disable denial sub.example.org } } -~~~
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