Removed Newtonsoft.Json from benchmarks and codebase. Added AcBinaryBufferWriterBenchmark using ArrayBufferWriter and AcBinarySerializer's buffer writer API. Optimized WriteStringUtf8 for ASCII fast path. Improved ArrayBinaryOutput buffer reuse and memory management. Introduced Reset method to IBinaryOutputBase and implemented it in outputs. Streamlined serializer benchmarks to focus on AcBinary and System.Text.Json.
Major serialization pipeline refactor: all hot-path buffer and position management is now owned by BinarySerializationContext<TOutput>, with all write methods inlined for zero virtual dispatch. TOutput (now struct, IBinaryOutputBase) handles only cold-path buffer management (Initialize, Grow, GetTotalPosition). ArrayBinaryOutput and BufferWriterBinaryOutput are simplified to buffer managers. IBinaryOutput and BinaryOutputBase are removed. All serialization logic now uses context write methods (~130 call sites updated). This yields significant performance gains by eliminating virtual/interface calls on the serialization hot path.
Introduce ArrayBinaryOutput, BufferWriterBinaryOutput, BinaryOutputBase, and IBinaryOutput for flexible, efficient serialization to pooled arrays and streaming buffers. Refactor AcBinaryHubProtocol to use new output for SignalR. Make UseMetadata runtime-settable in AcBinarySerializerOptions. Update QuickBenchmark for new options. Enables allocation-free, extensible binary serialization infrastructure.
Loretta