Deleting an account, deleting a managed profile, "Delete all data" and the
admin wipe now write an off-host deletion request in the same transaction
as the deletion. A new job (offhost-backup-purge, kicked straight away and
run nightly as a backstop) lists the bucket once, deletes every
<date>/user-<id>.json.enc object of each pending account and removes the
request only when nothing of the account is left. A refused delete keeps
the request with the bucket's answer and is retried; the off-host card
shows how many deletions are outstanding and why. A copy the nightly run
was writing while the account was deleted is taken back after the upload.
The off-host card also reads the bucket's lifecycle rule and says plainly
when there is none (every nightly copy kept forever) or when the
credential may not read it.
Every stored backup now records the key ids its content was written
under, and every off-host upload records the same per key. The admin
encryption view lists, per key, the stored copies that need it with the
oldest date, and when the last off-host copy needing it expires. The
"safe to drop" badge now requires that no backup still needs a retired
key, instead of only that every row was rotated.
Migration 0358 adds data_backups.inner_key_ids, the key-use table and the
deletion requests.
A stored backup was one value in data_backups.data. v1.39.1 wrote it a
piece at a time but still joined the pieces into that one value, and one
value has to pass through the app whole, so a copy was capped at a fifth of
the heap: 105 MB in the default 1 GB container. An account with 1.75
million readings is past that and could not be backed up at all (#1031).
A copy is now kept as ordered pieces of about a megabyte in the new
data_backup_chunks table (migration 0352). Each piece is sealed on its own
with AES-256-GCM, and its sealed header names the copy (a random stream id
kept on the row), its position and whether it is the last. A reader checks
every piece before it releases a byte, so a piece that is missing, moved,
altered, taken from another copy, or a copy cut short is refused with
backup.payload.undecryptable before a restore deletes anything, and the
second read during the restore checks each piece again.
The write is one transaction, so the previous copy stays whole and readable
until the new one commits. Pieces are written through the model API: a raw
query with a large parameter is kept alive by Prisma's query plan cache,
which left 160 MB of heap behind per hundred one-megabyte inserts.
Restore, preview, download, the restore job and the admin list read both
forms; copies written before this change keep their single value and still
restore. The heap-derived limit is gone. The one limit left is on storage,
BACKUP_MAX_STORED_MB (default 2048), and its message names the setting. Key
rotation covers the pieces, the wipe and account deletion take them with
their backup, and the backup plan lists the table as not carried.
Measured on an account of 2.6 million readings in a 1 GB container with web
and worker in one process: backup 87 s, 97 MiB in 96 pieces, preview 20 s,
download 25 s, restore 264 s with every reading back exactly, peak 567 MiB,
no restart.
Four smaller things around the same card.
The configured flag came from the environment of whichever process serves the
request. A hand-rolled split that gives BACKUP_S3_* to the worker and not to
the web process would have shown an operator "nothing leaves this host" over a
ledger full of fresh rows. The ledger is queried either way now, and a row in
it outranks an environment read: a row is proof an upload happened.
Rows sorted by username put the one account that needs attention wherever the
alphabet leaves it, which on a hundred-account cohort is the crowd problem the
card exists to end, moved from a count into a list. Worst verdict first,
alphabetical within a verdict, decided server-side so the tests and the
accessibility fixture see the order the operator does.
The card's docblock claimed the worker holds PutObject and GetObject. The
runbook is right and the multipart path needs AbortMultipartUpload too, so the
prose no longer documents a grant that would break the uploader.
And the byte formatter moved to lib. The off-host card was importing it out of
a thousand-line client component, which costs nothing while both cards render
on one route and becomes a cost the moment either moves.
On the release that adds the ledger the table is empty, so on a host that has
been uploading nightly for months every account read Never, under a sentence
saying no copy had ever reached the bucket. That sentence is untrue on exactly
the morning an operator opens the new card for the first time, and it is a
claim the host cannot make: what is empty is the record, not the bucket.
The run now records every account it walks, not only the ones an object came
of. A walk that produced nothing moves the attempt instant and leaves the
success columns alone, so the two cases separate: no row at all is no record
yet, a row without a success is never. Never now means what the word says —
a run looked at this account and has never put anything there.
The card names the last check on the never row, so the state is a fact with a
timestamp rather than an assertion. Runbook and all seven bundles carry the
same two sentences. The integration file proves both arms against real
Postgres, including that a failed run leaves the previous good copy on the
row.
The column was INTEGER. A single object may occupy 8 MiB across 10 000
multipart parts, which is the 80 GB the uploader explicitly permits, and
Postgres INTEGER stops at 2.1 GB. An account between the two uploads fine and
then cannot be recorded, so the biggest account on the host is the one the
console would have to report on and could not.
BIGINT in the table, BigInt in the model, Number() where the route builds the
wire row so the payload type stays a plain number. The migration is edited in
place rather than followed by a second one: the table has not shipped, and a
column widened before its first release is one column, not a history.
The comparison with the in-database backup does not carry over, for the
record: that size is octet_length over a bytea Postgres caps at 1 GB, while
this object never touches the database at all.
The nightly off-host job reports counts — uploaded, failed, total — and a
count cannot name the account it is failing for. A cohort where one object
has been refused every night for a month reads as "99 uploaded, 1 failed"
each time, which looks like weather rather than like an account with no
disaster-recovery copy at all.
The worker now writes a ledger row when an object lands (account, instant,
size), and Admin → Backups gains a second card that rates every account
against the nightly schedule: fresh inside one run, due when one run
produced nothing, stale when two did not, never when no object has ever
landed. On a host without BACKUP_S3_* the card says off-host backup is not
configured and stops there.
The verdicts are computed from the ledger, never from a bucket listing: the
worker's grant is deliberately PutObject + GetObject, and an admin page must
not put the operator's credentials on its render path to state a number the
database already holds.
Two places claimed a stored payload cannot leave the page: the card's own
description ("payloads are not downloadable from this page") and the listing
route's comment ("admins can trigger a re-snapshot but not download another
user's payload from the UI"). Both have been false since the download button
shipped — every row carries one, and the route hands back the decrypted JSON.
The description now says what happens instead: sizes are the encrypted blob,
Download decrypts the snapshot for the admin who asks, the ciphertext stays in
the database. Seven catalogues, and the route comment points at the route that
owns the payload.
The weekly pass can stop and leave no trace where anyone looks. The
handler's own error never runs when the job is killed rather than thrown;
`recordError()` increments an unnamed counter; and the admin status page's
failing-queue panel looks back 72 hours, which for a weekly queue means a
permanent failure is on screen three days in seven. The backups page
itself showed an ordinary row with an ordinary timestamp, because a copy
made six weeks ago reads exactly like Sunday's until somebody subtracts
the dates.
The listing now carries two facts that fail at different times: the age of
the newest scheduled copy, which never leaves any retention window, and
the terminal state of the last scheduled run, which is the only place the
reason is written down. `readLastQueueRun` takes the newest run rather
than a window, so a weekly queue's outcome stays readable until the next
one replaces it, and it unwraps the value pg-boss stores a thrown error
under, so the page says "job timed out" instead of raw JSON. The
failing-queue reader gets the same unwrap.
Manual uploads are excluded from the cadence judgement by the shape of the
input, so an ad-hoc upload cannot make a dead cron look alive, and a fresh
instance is not called overdue for having no copy yet.
The listing also stops reading every blob into the web process to measure
it; `octet_length` answers that in the database, which on an instance with
large records was its own way of running out of memory.
Eight touch-disjoint waves landed on develop before this release:
- W-INSIGHTS-HOT + W-RECONCILE-INSIGHTS — extract the timeout-stub
persist helper and wire all seven *-status routes through it, closing
the recurring ~14 s warm response the iOS client sees on dashboard
open once the AI provider has stalled once that day.
- W-DELETED-2 — close the remaining three soft-delete reader-tier gaps
(export bundle, gamification achievements, doctor-report aggregator)
with a five-route integration-test pin.
- W-ORG — types consolidation into src/types/analytics.ts and
src/types/backups.ts; prompt directory unification.
- W-FRONTEND-FACTORY — queryKey factory expansion + ESLint rule lift.
- W-IOS-COORD — POST /api/auth/check-user four-branch onboarding
discovery, identifier matched verbatim, per-IP rate-limited.
- W-SIMPLIFIER — today-intake projection helper extract; unused tx?
params dropped; 13 knip-flagged dead exports trimmed.
- W-PERF-OPS — v1.4.39 W-SUM legacy-NULL UNION discovery arm retired.
- W-PROCESS-DOCS — pg.Pool sizing operator doc; ESLint rule
formalisation; knip CI gate staged for v1.4.42 flip.
No migration, no env-var change, no API contract break for iOS v0.5.4.
The new check-user endpoint is an additive surface. AP-2 .p8 key is
installed; SB-5 time-sensitive APNs is live as of this deploy.
pnpm test --run green at 4732 passing / 1 skipped.
pnpm typecheck, pnpm lint, pnpm knip green.
Folds in the v1.4.6 deferred backlog item:
* `GET /api/admin/backups` — returns metadata-only listing of every
DataBackup row (size in bytes, no payload). Encrypted blobs stay
server-side.
* `POST /api/admin/backups/run` — enqueues an ad-hoc data-backup
pg-boss job. Returns 503 if the worker isn't running; the existing
weekly cron schedule is unchanged.
* `<BackupsSection>` — admin route at /admin/backups with the rows
table + "Backup now" CTA.
No new dependencies; uses the global pg-boss instance already wired in
`src/lib/jobs/boss-instance.ts`.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Marc-André Bombeck