Feign fallback example
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start client
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start service-one, service-two, service-three
The client calls service-one through Feign and receives the string "Get String from SERVICE-ONE".
The сlient also calls service-two through Feign and gets the string "Get String from SERVICE-TWO".
Prerequisite:
in case of unavailability of service-two, the client must call the Fallback class in which the call to service-three is indicated
and instead of "Get String from SERVICE-TWO", the client should get "Get String from SERVICE-THREE" from service-three.
Testing
If you go to the client url
http://localhost:8070/getDataFromServiceOneByFeign
you will get information from service-one
"Get String from SERVICE-ONE"
If you go to the client url
http://localhost:8070/getDataFromServiceTwoByFeign
you will get information from service two
"Get String from SERVICE-TWO"
Stop service-two and try calling again
http://localhost:8070/getDataFromServiceTwoByFeign
In this case, you will receive information from the service-three
"Get String from SERVICE-THREE"