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| author |  Ruslan Drozhdzh <30860269+rdrozhdzh@users.noreply.github.com>
| 2018-04-11 09:50:06 +0300 |
|---|---|---|
| committer |  Miek Gieben <miek@miek.nl>
| 2018-04-11 07:50:06 +0100 |
| commit | a20b4fe2de5da647a3a14a105c5e71393415b0b3 (patch) | |
| tree | f1ca0954f43d991ab3156273befd41a85c652ad9 /pb | |
| parent | 5a546f743e2d694524db8d5ce02415f53d6cd045 (diff) | |
| download | coredns-a20b4fe2de5da647a3a14a105c5e71393415b0b3.tar.gz coredns-a20b4fe2de5da647a3a14a105c5e71393415b0b3.tar.zst coredns-a20b4fe2de5da647a3a14a105c5e71393415b0b3.zip | |
plugin/forward: use dynamic read timeout (#1659)
- each proxy stores average RTT (round trip time) of last rttCount queries.
For now, I assigned the value 4 to rttCount
- the read timeout is calculated as doubled average RTT, but it cannot
exceed default timeout
- initial avg RTT is set to a half of default timeout, so initial timeout
is equal to default timeout
- the RTT for failed read is considered equal to default timeout, so any
failed read will lead to increasing average RTT (up to default timeout)
- dynamic timeouts will let us react faster on lost UDP packets
- in future, we may develop a low-latency forward policy based on
collected RTT values of proxies
Diffstat (limited to 'pb')
0 files changed, 0 insertions, 0 deletions