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add clarification on use of HTTP status codes for GC Technical considerations (#230) #243

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tomkralidis merged 1 commit into from
Mar 13, 2026
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add clarification on use of HTTP status codes for GC Technical considerations (#230) #243

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1 change: 1 addition & 0 deletions guide/sections/part2/global-services.adoc
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Expand Up @@ -148,6 +148,7 @@ In WIS2, Global Caches provide access to WMO core data for data consumers. This
* If the Global Cache is not able to download the data, the metric ``wmo_wis2_gc_downloaded_error_total`` will be increased by 1.
* A Global Cache shall provide the metric defined in this Guide at an HTTP endpoint.
* A Global Cache should make sure that data are downloaded in parallel and that downloads are not blocking each other.
* A Global Cache will implement https://datatracker.ietf.org/doc/html/rfc2616#section-10[Status Code Definitions] as defined by the https://datatracker.ietf.org/doc/html/rfc2616[HTTP specification].

* The metric ``wmo_wis2_gc_dataserver_status_flag`` will reflect the status of the connection to the download endpoint of the centre. Its value will be 1 when the endpoint is up and 0 otherwise.
* The metric ``wmo_wis2_gc_last_metadata_timestamp_seconds`` will reflect the datetime (as a timestamp, the number of seconds since the UNIX epoch) of the last metadata resource processed by a given centre.
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