[OSM-dev] change replication and replication lag

[Roland Olbricht]

Am 10.03.21 um 10:29 schrieb Jochen Topf via dev:
>>> What are others using? switch2osm still refers to a mod_tile supplied
>>> script using osmose.
[..]
>> osmium fileinfo --extended --get=data.timestamp.last
>
> That has the advantage of definitly being correct, because it looks at
> the actual data and not some state file which might or might not be
> correct.

Please note the pitfall that later changefiles may contain older unseen
changes, i.e. the date ranges overlap. E.g.

If there is an object with timestamp 2021-03-09T22:14:57Z in
https://planet.openstreetmap.org/replication/minute/004/448/577.osc.gz
then it absolutely can happen that in
https://planet.openstreetmap.org/replication/minute/004/448/578.osc.gz
there is another object with timestamp half an hour or so earlier.

Best regards,
Roland