Add virtual-threads-benchmark-webflux: the WebFlux leg of the three-way benchmark

Re-uses the platform/virtual-thread transcripts already committed in
virtual-threads-benchmark rather than re-measuring them, and adds a WebFlux
module measured the same way (client-side java.net.http.HttpClient load
generator against a real Netty server). Covers I/O-bound throughput, a
naive-vs-offloaded CPU-bound comparison that turned up a real, counter-
intuitive fact about this sandbox's default thread-pool sizes
(LoopResources.DEFAULT_IO_WORKER_COUNT=4 vs Schedulers.parallel()'s
availableProcessors()=2), and an event-loop-starvation scenario showing
what the naive endpoint actually costs unrelated /io traffic on the same
server. Companion code for the ankurm.com post "Virtual Threads vs WebFlux
vs Platform Threads: Benchmarks and a Decision Framework." Also fixes the
root README's module table, which was missing the virtual-threads-benchmark
row from an earlier commit.

This commit is contained in:

Claude

2026-09-19 08:31:51 +00:00

parent f506b01389

commit c462fcb663

17 changed files with 733 additions and 0 deletions

									
										virtual-threads-benchmark-webflux/scripts/run.sh
									
Executable

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				#!/usr/bin/env bash

				# Starts the WebFlux app on :8080 to poke at by hand.

				#   ./scripts/run.sh

				set -euo pipefail

				cd "$(dirname "$0")/.."

				mvn -q -B spring-boot:run