=== request/response, 5000 sequential calls after 2000 warm-up, loopback, JDK 25.0.4.1 ===
gRPC         n=5000   p50=   302.0 us  p99=    994.7 us  mean=   335.1 us  ~2,984 calls/s
RSocket      n=5000   p50=   265.9 us  p99=   1166.2 us  mean=   311.9 us  ~3,206 calls/s
WebSocket    n=5000   p50=   122.8 us  p99=   1893.9 us  mean=   184.8 us  ~5,410 calls/s
