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Polishing documentation

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Ryan Baxter
2019-05-21 12:44:30 -04:00
parent a2ee96ebb9
commit fe3dfcc4e8
1 changed files with 5 additions and 11 deletions
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docs/src/main/asciidoc/spring-cloud-netflix.adoc
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@@ -324,18 +324,12 @@ eureka.instance.metadataMap.zone = zone2
eureka.client.preferSameZoneEureka = true
```
=== Refresh Scope of Eureka Client
=== Refreshing Eureka Clients
By default, the `EurekaClient` bean is refreshable, so the Eureka client properties can be refreshed, but this has a disadvantage:
with the default setting, the `EurekaClient` instance will be destroyed and reconstructed again when refreshed, so your program will unregister from eurekaServer and after some seconds, it will register to eurekaServer again,
consider that when we refresh all of the `Service A` instances at the same time, there will be some seconds no one instance alive on eurekaServer, if at the same time, `Service B` tries to fetch instances of `Service A`,
it will fetch an empty list. If you don't want to see this, you can set `eureka.client.refresh.enable=false` in the application properties to make the `EurekaClient` instance immutable,
but notice that if you set this property to false, none of the Eureka client properties will be refreshable. (This property is imported since `Finchley.SR4`)
*application.properties. *
```
eureka.client.refresh.enable=false
```
By default, the `EurekaClient` bean is refreshable, meaning the Eureka client properties can be changed and refreshed.
When a refresh occurs clients will be unregistered from the Eureka server and there might be a brief moment of time
where all instance of a given service are not available. One way to eliminate this from happening is to disable
the ability to refresh Eureka clients. To do this set `eureka.client.refresh.enable=false`.
[[spring-cloud-eureka-server]]
== Service Discovery: Eureka Server