Limitations
The Caching Support for NF Discovery feature has the following limitations:
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This feature only supports UDM, PCF, AMF discovery, and load-balancing.
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It does not support UPF discovery.
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It does not support Dynamic Configuration changes of NRF endpoints.
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It does not support Liveliness check of the NRF endpoints.
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NF Discovery is always attempted on primary host followed by the secondary and then tertiary host.