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Code Issues Releases Wiki Activity

Update Serving stale data

Matthijs Mekking
2021-01-21 15:27:25 +00:00
parent ce79ea342c
commit 4d5fc18bf1
1 changed files with 27 additions and 27 deletions
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54
Serving-stale-data.md

@@ -55,34 +55,34 @@ To further improve the serving of stale data, we added another option:
All improvements made in 9.16.9 and later will be backported to 9.11-S1. All improvements made in 9.16.9 and later will be backported to 9.11-S1.
## A client walks into a bar, and asks the bartender do you have stale data? ## A client walks into a bar, and asks the bartender do you serve stale data?
| stale-cache-enable | stale-answer-enable | stale-refresh-time | stale-answer-client-timeout | | cache-enable | answer-enable | refresh-time | answer-client-timeout | bartender |
| ------------------ | ------------------- | ------------------ | --------------------------- | | ------------ | ------------- | ------------ | --------------------- | --------- |
| no | no | 0 (disabled) | off (disabled) | | no | no | 0 (disabled) | off (disabled) | no |
| no | no | 0 (disabled) | 0 | | no | no | 0 (disabled) | 0 | no |
| no | no | 0 (disabled) | value | | no | no | 0 (disabled) | value | no |
| no | no | value | off (disabled) | | no | no | value | off (disabled) | no |
| no | no | value | 0 | | no | no | value | 0 | no |
| no | no | value | value | | no | no | value | value | no |
| no | yes | 0 (disabled) | off (disabled) | | no | yes | 0 (disabled) | off (disabled) | no |
| no | yes | 0 (disabled) | 0 | | no | yes | 0 (disabled) | 0 | no |
| no | yes | 0 (disabled) | value | | no | yes | 0 (disabled) | value | no |
| no | yes | value | off (disabled) | | no | yes | value | off (disabled) | no |
| no | yes | value | 0 | | no | yes | value | 0 | no |
| no | yes | value | value | | no | yes | value | value | no |
| yes | no | 0 (disabled) | off (disabled) | | yes | no | 0 (disabled) | off (disabled) | no |
| yes | no | 0 (disabled) | 0 | | yes | no | 0 (disabled) | 0 | no |
| yes | no | 0 (disabled) | value | | yes | no | 0 (disabled) | value | no |
| yes | no | value | off (disabled) | | yes | no | value | off (disabled) | no |
| yes | no | value | 0 | | yes | no | value | 0 | no |
| yes | no | value | value | | yes | no | value | value | no |
| yes | yes | 0 (disabled) | off (disabled) | | yes | yes | 0 (disabled) | off (disabled) | maybe |
| yes | yes | 0 (disabled) | 0 | | yes | yes | 0 (disabled) | 0 | yes |
| yes | yes | 0 (disabled) | value | | yes | yes | 0 (disabled) | value | maybe |
| yes | yes | value | off (disabled) | | yes | yes | value | off (disabled) | most of the time |
| yes | yes | value | 0 | | yes | yes | value | 0 | yes |
| yes | yes | value | value | | yes | yes | value | value | most of the time |
With all these options, we now allow operators to be RFC 8767 compliant. But it is also less predictable when stale data is returned and when an attempt to resolve the query is made. With all these options, we now allow operators to be RFC 8767 compliant. But it is also less predictable when stale data is returned and when an attempt to resolve the query is made.