Part of Stem. This page defines the snapshot target of a Node.

The state is the single Snapshot blob named here, and the version is its CID.

Fields

field	type	required	meaning
`kind`	literal `snapshot`	yes	Target kind tag.
`snapshot`	CID	yes	The Snapshot holding the complete state.

Rules

The Snapshot must be indexed before the Node is applied; otherwise the Node is stashed. The Snapshot's schema must be the schema of the node's Kind, or extend it. Two concurrent snapshot targets are both heads of the resource; the kind's schema may define a merge, otherwise the client shows both and the next Snapshot lists both in prev. A snapshot target concurrent with a heads target is treated as a head of the Change graph.

Today (HM24)

Comments, contacts and profiles are snapshot blobs in all but name: each edit is a new blob that replaces the whole value, found by TSID or by key. Stem makes the pattern explicit and gives every such record a node, so it has a parent, an audience and links like a document.

Example

{"kind": "snapshot", "snapshot": {"/": "bafyreicommentsnapshot000000000000000000000000000000000000"}}

Fields

Rules

Today (HM24)

Example

See also