imccyu
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The persisted row (sessionId, key, stateVersion, observedSeq, state) becomes (sessionId, key, ver, seq, val) — the cache medium repeats these three names for every unit of every session, so the long forms dominated the JSON payload. ProjectionCheckpointRow and the checkpointRow zod spec rename together; the domain spec bumps to v3 (cache semantics: the old medium is discarded, not migrated). The unit-facing declaration keeps stateVersion — only the persisted/checkpoint row shape changes.
session-projection/
English | 中文
Session-projection capability family: the seam through which domain host plugins serve whole current values of log-derived per-session state to client carriers.
| Package | ctx key | Role |
|---|---|---|
session-projection |
sessionProjections |
The interface package: the merge-extensible SessionProjectionMap type table, the ProjectionDefinition unit contract, and the eagerly driven registry carriers read synchronously |
session-projection-cache |
sessionProjectionCache |
Persisted projection cache: durable per-session unit checkpoints over the domain data form, throttled write-behind with mandatory turn/end + detach points, and the cold-read ladder (cache row + persistence tail replay) |