A switchable trace (DATA/perf/trace.on or PERF_TRACE=1) records every request's
phases (stat, open, first read, disk vs network wait), browser resource timings,
page-turn waits and flow stalls, a cold storage probe, event-loop lag, scans and
scraper calls as JSONL. tools/perf-report.js says which phase slow loads spend
their time in; tools/perf-bench.js simulates readers.
READ_AHEAD (default on) reads an opened chapter's pages, then the next chapter's,
into the OS cache so a NAS's cold reads stop reaching the browser.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
f38f218 failed to build: .dockerignore is an allowlist and kept
moments.js out of the build context. Verified by building the image and
starting the reader from it (health ok).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The 5497e8b image lacked moments.js, so the reader crashed at start on
docker-01. test/dockerfile.test.js follows server.js requires and fails
when a top-level module is not copied into the image.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
MaashkinoozheandClaude Opus 5.5