Next uses the LOWEST revalidate among a route's fetches, not the segment
value. School pages fetch school details at 300s and place pages fetch
national averages at 3600s, so the effective ISR period is five minutes
and one hour respectively — not the seven days the segment declares.
A flag flip therefore propagates on its own, well inside the monthly,
by-hand cadence these flags are for. That deletes two webhook
integrations, a revalidate route, a secret-in-query-string scheme, an
idempotency requirement, and the rule that every fetch carry a cache
tag — which was the part most likely to rot as fetches are added.
Two constraints survive: a flag must never gate content on a
force-static page, because app/admissions never revalidates; and a
route-family flag must rebuild the sitemap, deferred with the route case
since no flag in scope touches it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mWQnpye9F299NVRCCSRvj
Unleash self-hosted in its own Portainer stack, with FastAPI holding the
only SDK and Next reading flags through a tagged fetch.
The two hard parts are consequences of putting flag state in a service
rather than the repo: main stops being the whole truth about what is on,
and a flag can now change without the deploy that would have cleared the
caches. A code-declared registry bounds the first; webhook-driven
revalidateTag handles the second.
Cache tagging is deliberately coarse — every server fetch carries the
flags tag, not just the flags fetch itself. The first consumer proves
why: admission_distance changes the shape of /api/schools/{urn}, so a
narrow purge would leave ~25,000 school pages serving the pre-flip
render for a week, invisibly.
First consumer is the last-distance-offered feature, which is on main
and staging and has never reached production. It needs one gate, at the
API, because the frontend already no-ops on a missing field.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mWQnpye9F299NVRCCSRvj
