Feign 11 Proposed Roadmap

Some of these considerations have been attempted in FeignX. We should consider moving these into Feign.

Considerations:

• Java 11 Module Support
• Async Execution through CompletableFuture
  • Pluggable Executor Support
• Reactive Execution through Reactive Streams
  • Does this require explicit non-blocking with Netty?
• Complete URI Template Support
  • Level 1 - 4 support
  • Better Object Expansion
• Enhanced Retry through the use of Conditions and Backoff
  • Exception Condition
  • Status Code Condition
  • Custom Condition
  • Backoff Policies
• Enhanced Logging
  • Log external and internal messages
  • Consider using SLF4J in all cases
  • Built in Performance characteristics
• Annotation Processor as an alternative to Reflection based Proxies
  • This may imply in re-working the current Contract implementations so code can be shared between reflective and non-reflective code