Commits on Jun 6, 2017

1. Asynchronously stream requests to upstream when possible [feature] …

   Old implementation did buffering for any data that comes in and out of
   the gateway, which produce several drawbacks:
   
   1. Memory usage was high
   2. Network I/O had many peaks (read full body and then send it to
   upstream)
   3. Higher latency (now upstream accepts connection almost instantly)
   4. It was impossible to send large files, because they consumed lots of
   memory on gateway side.
   
   Current implementation will buffer only requests with application/json
   content-type, allowing Logger to save them.
   
   Future plans:
   - Find smarter way to log requests (by dropping secure data).
   - Use feature flags to async proxying JSON data.

   

   AndrewDryga committed Jun 6, 2017
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