Fieldnote Sync
v2.11.0-rc.3+build.20260730
Overview
Endpoints
Conflict model
Limits
Changelog
Replication protocol specification
How ten thousand devices stay in agreement without a central clock.
12 ms
median sync latency
99.999%
delivery guarantee
4,096
max concurrent replicas
0
bytes readable by our servers
Replication endpoint
sync://replication.fieldnote.example/v2/streams/primary?compression=zstd&frame=64KiB
The endpoint identifier is immutable; treat it as an opaque capability URL.
Every edit is a signed operation in a per-note log. Concurrent edits merge deterministically; the merge function is commutative, associative, and idempotent.
The pathological case — simultaneous renames of the same note on offline devices — resolves by lexicographic device fingerprint, documented as Entscheidungsverfahrensdokumentation in the German compliance annex.
Hard limits
Maximum note size
1 MiB
Maximum attachment size
25 MiB
Log retention on free plan
90 days
Device fingerprint length
128 hexadecimal characters
2026-07-30 · rc.3 · frame negotiation hardened · zstd window capped
© 2026 Fieldnote Labs · Status · Security disclosures
