azure-core Performance Improvements

[alzimmermsft]

This issue tracks on-going, and completed/terminated, performance improvement work items for azure-core, and other Core libraries.

• Investigate Support Additional Body Types in HttpRequest Investigate Support Additional Body Types in HttpRequest #19025
• Less Eagerly Request Upstream Emissions when Sending Request Less Eagerly Request Upstream Emissions when Sending Request #18680
• Investigate retaining buffers during subscription lifetime Investigate retaining buffers during subscription lifetime #8053
• Investigate getBodyAsInputStream API for HttpResponse Investigate getBodyAsInputStream API for HttpResponse #16035
• Add a Flux Backed Stream Implementations Add a Flux<ByteBuffer> Backed Stream Implementations #11676
• Investigate Leveraging Jackson AfterBurner/Blackbird Investigate Leveraging Jackson AfterBurner/Blackbird #19284
• Support Multi-Version JARs Support Multi-Version JARs #19160
  • Investigate Replacing Reflection with MethodHandles Investigate Replacing Reflection with MethodHandles #18987 (Requires Java 9+)
• Investigate using MappedByteBuffer when Sending a File as a Request Body Investigate using MappedByteBuffer when Sending a File as a Request Body #19283
• Review HttpRequest Body Reading in HttpPipelinePolicies Review HttpRequest Body Reading in HttpPipelinePolicies #14917
• Investigate Less Eager Requests when Sending Network Data Investigate Less Eager Requests when Sending Network Data #19010
• Investigate Zero Second Retry Delay Handling Investigate Zero Second Retry Delay Handling #18475
• [FEATURE REQ] Add sendFile API to HttpClient [FEATURE REQ] Add sendFile API to HttpClient #13099
• Configurable chunk-size for azure-core-netty Configurable chunk-size for azure-core-netty #8054
• [Proposal] Add HttpHeaders Constructor with Initial Size [Proposal] Add HttpHeaders Constructor with Initial Size #11472

[alzimmermsft]

Closing as this was a tracking issue which is now managed by a GitHub project