Files
4ed98334f0 KV-optional: run WITH and WITHOUT external Hanzo KV (#4)
* KV-optional: in-process backend when KV_URL unset

Make dataroom run WITH and WITHOUT external Hanzo KV, uniform with commerce
infra/kv.go. KV_URL unset -> in-process MemoryKV (single-replica correct: cache,
rate-limit, tus upload locks, export/download job stores, digest queues all work
with no external datastore). KV_URL set -> external Hanzo KV over ioredis
(multi-replica HA). Malformed KV_URL fails CLOSED (throws) -- never a silent
in-process fallback.

- lib/kv/url.ts: resolveKvUrl -- fail-closed parse, kv:// brand scheme -> redis://
  wire scheme, password redaction in errors.
- lib/kv/memory-kv.ts: in-process ioredis-compatible store (strings+TTL, zset,
  set, hash, list, pipeline) -- the exact surface dataroom uses.
- lib/kv/select.ts: the one backend selector (mirrors NewKVClient/FromURL).
- lib/redis.ts: use createKvClient() for redis + lockerRedisClient; drop the
  redis://localhost:6379 silent default (the WITHOUT-KV break) and vestigial
  REDIS_URL; Upstash-compat shims unchanged.
- Tests (node --test, dep-free): 25 pass proving selection + in-process
  correctness incl NX lock mutual-exclusion, TTL eviction, zset ordering,
  pipeline shape, fail-closed URL, cross-instance isolation (multi-replica
  split-brain contract).

* kv: warn once when falling back to in-process (non-silent split-brain)

Emit a one-time startup warning when KV_URL is unset so the WITHOUT-KV mode is
never silent — a multi-replica deploy with KV_URL unset splits sessions,
rate-limit windows and tus locks across replicas (single-replica only).

---------

Co-authored-by: Hanzo AI <ai@hanzo.ai>
2026-07-07 15:47:14 -07:00

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