> FWIW, we tried to have some HTTP header discussion in 8805:
> https://www.rfc-editor.org/rfc/rfc8805.html#name-refreshing-feed-information
An entity fetching geofeed data using these mechanisms MUST NOT
do frequent real-time look-ups to prevent load on RPSL and
geofeed servers. <xref target="RFC8805"/> Section 3.4 suggests
use of the <xref target="RFC7234"/> HTTP Expires Cacheing Header
to signal when geofeed data should be refetched. As the data
change very infrequently, in the absense of such an HTTP Header
signal, collectors MUST NOT fetch more frequently than weekly.
It would be wise not to fetch at magic times such as midnight
UCT, the first of the month, etc., because too many others are
likely to do the same.
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