The origin was 3–8 ms per page, almost all of it per-statement overhead:
an issue page ran two statements per pick (~55 on a 25-article issue) and
every signed-in page wrote its session row back because `take_flash`
called `Session::remove`, which marks the session modified even when the
key is absent.
- `Db::get_articles` loads an issue's articles and their social rows in
two statements; both branches of `web::issue::load` use it. The
single-id and batch queries share one projection via a macro.
- `take_flash` reads before removing, and touches a signed-in session at
most once a day so the inactivity expiry still slides. Anonymous
requests never create a session.
- `Server-Timing: app;dur=<ms>` on every response, outermost layer.
- `reject_early_data`: 425 for a non-safe method that arrived as TLS 0-RTT
data, so nginx `ssl_early_data on` is safe (RFC 8470 §5.2).
- `[profile.release]`: fat LTO, one codegen unit (binary 46 → 29 MB).
Docs: the Cloudflare proxy was retired on 2026-09-05 after measuring
+43 ms per signed-in page from Boston; README reverse-proxy section is
now the direct setup (upstream keepalive, 0-RTT lines) and the CDN
runbook carries a retired-status banner.
Dev seed, app-side: `/` 21 → 5 statements, 3.7 → 1.0 ms; `/feed.xml`
44 → 12, 9.1 → 3.0 ms; session writes per signed-in page 1 → 0.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Va5eMEmWEnjMXBsBob5FDW
The first rollout put the cookie bypass rule above the cache rule, as
the runbook said to, and signed-in requests were served the cached
anonymous page. Cloudflare applies the last matching rule for each
setting. Fold the cookie exclusion into the cache rule's expression so
order stops mattering, and explain the symptom in the verify step.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Va5eMEmWEnjMXBsBob5FDW
The edge-purge integration was reverted in the previous commit; this
finishes the job. Public pages, the feed and /issues.json now say
`public, max-age=300` for browsers and shared caches alike, the code
comments and README explain why the longer s-maxage plus purge design
was dropped, and the rollout runbook loses its purge step, marks the
HTML cache rule optional, and warns to keep the record DNS-only until
the Universal SSL certificate is active.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Va5eMEmWEnjMXBsBob5FDW
The README's nginx snippet had drifted from the box: it was missing http2, the
security-headers include, the gzip block, the keepalive bump and the trusted
certificate. Replace it with what actually runs, then add the two CDN changes.
`set_real_ip_from` for Cloudflare's ranges plus `real_ip_header
CF-Connecting-IP` has to come first, or every request looks like it came from
Cloudflare and the login throttle becomes global. Then `X-Forwarded-For` is
*set* from `$remote_addr` rather than appended to: the throttle keys on the
first entry, so a client-supplied header must never survive into the app.
The ranges are listed for reference but the reader is told to regenerate them
from cloudflare.com/ips-v4 and /ips-v6, with a one-liner that does it.
The gzip comment claimed the stylesheet carries 445 KB of base64 fonts; it has
not since the faces moved back out to their own URLs.
The new runbook covers the order that matters: the DNS move (Free plan means a
full nameserver change, so the rest of the zone has to survive it), the zone
settings that are quietly wrong by default — Browser Cache TTL *raises* the
origin's max-age unless set to "Respect Existing Headers", and Rocket Loader and
Email Obfuscation both inject scripts the site's `script-src 'self'` CSP blocks
— the two cache rules, locking the origin to Cloudflare, wiring the purge token,
and the `cf-cache-status` checks that prove each row of the header matrix.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Va5eMEmWEnjMXBsBob5FDW
thalladaandClaude Fable 5.1