DNS cache settings
You can configure settings for the DNS cache.
Setting
|
Description
|
|---|---|
TTL No Error Minimum
|
Specifies the lower boundary on time-to-live for cache hits.
The default value is 30 seconds. |
TTL No Error Maximum
|
Specifies the upper boundary on time-to-live for cache hits.
The default value is 3600 seconds. |
TTL Non-existent Domain Minimum
|
Specifies the lower boundary on time-to-live for nxdomain.
The default value is 15 seconds. |
TTL Non-existent Domain Maximum
|
Specifies the upper boundary on time-to-live for nxdomain.
The default value is 3600 seconds. |
TTL Other Failures Minimum
|
Specifies the lower boundary on time-to-live for non-nxdomain failures.
The default value is 0 seconds. |
TTL Other Failures Maximum
|
Specifies the upper boundary on time-to-live for non-nxdomain failures.
The default value is 60 seconds. |
TTL Lower Limit For Server Failures
|
Specifies the lower boundary on time-to-live for DNS server failures.
The default value is 300 seconds. |
TTL Upper Limit For Server Failures
|
Specifies the upper boundary on time-to-live for DNS server failures.
The default value is 3600 seconds. |
Eager Refresh
|
Specifies the lead time to refresh cache entries that are nearing expiration.
The default value is 0 seconds. |
Cache Entry Limit
|
Specifies the maximum number of entries that the DNS cache can contain.
The default value is 65536 entries. |
Test Ping Delta
|
Specifies the delta for checking the cbind cluster health.
The default value is 30 seconds. |