It is good thing to make this checks because of expensive concatenation of String objects (debug messages).

fixes gh-596

fixes gh-591

fixes gh-527

Helps when eureka is on the classpath, but is explicitly disabled.

fixes gh-521

Move it back to EurekaDiscoveryClientConfiguration.

fixes gh-578

Since all feign clients now have access to the type, logging can apply a type regardless.

Fixes gh-431

fixes gh-447

Eureka now only directly depends on java.inject.

Fixes gh-529

* pull585:
  Fix feign scanning that fails if clients attr is not use

fixes gh-584

fixes gh-570

fixes gh-576

* feign-compression-docs:
  Feign compression documentation

* pull577:
  Use instanceof for better readability

* pull575:
  Use "<>" and use isInfoEnabled

Similar to @RibbonClient

fixes gh-288

https://github.com/Netflix/Hystrix/pull/921

Still a release candidate (not yet GA), but seems to work, so we'll
try and update before Spring Cloud is released again.

Fixes gh-546, fixes gh-567, fixes gh-553 (probably)

* feign-content-encoding-snapshot:
  Feign request/response gzip compression

fixes gh-561

Specifically CloudEurekaInstanceConfig where needed.

see gh-302

Other Ribbon clients in Spring Cloud use a ServerIntrospector
to check if the Server wanted to be secure. This change levels things
up (and makes the Spring Feign Client a lit easier to customize).

See gh-414

Most clients send "Transfer-Encoding: chunked" so this isn't often
an issue, but if they don't (e.g. if you use "-H Expect:" with
curl) then it's not a great idea to slurp it all into memory.

Fixes gh-563

When using Ribbon the hystrix config and metrics are namespaced
as "RibbonCommand" (via the group key). the command key can then be
serviceId, making it easier to remember how to configure
Ribbon and Hystrix.

Fixes gh-329