Re: Weird time delay in data.iana.org 2024b update
Is this perhaps deliberate, to prevent too many people trying to access updated timezone data all at once?
More likely that server or org network access is front-ended by a proxy server that has to scan everything before it caches it and/or allows anyone to access it.
I suppose that could be the issue. The response from https://data.iana.org/time-zones/releases/ has this header: cache-control: max-age=86400 Perhaps what seemed like more than a day of delay was just a bit under.
Quoting Kerry Shetline via tz on Friday September 06, 2024:
More likely that server or org network access is front-ended by a proxy server that has to scan everything before it caches it and/or allows anyone to access it.
I suppose that could be the issue. The response from https://data.iana.org/time-zones/releases/ has this header:
cache-control: max-age=86400
The data is published using a CDN that has many nodes around the world. It is expected behaviour that it takes time to propagate and that replacement data isn't spontaneously available. Note that this only affects the "-latest" filepaths, because a new version fo the database represents a substitution of existing data, if you fetch from the novel URLs for a new release (e.g. https://data.iana.org/time-zones/releases/tzdata2024b.tar.gz) you will get it immediately. As James mentioned, we typically go into the CDN provider configuration manually after a release to force it to reload each of the URLs but didn't do so this time. kim
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Kerry Shetline -
Kim Davies