Artifact Description [77e65fc9aa]

Artifact 77e65fc9aa698a4346b5eb6277b456e5bedab7f53836e10f31d7cc775e50e2c6:

• File internal/content/sparse_horizon.go
  • 2026-10-22 22:18:31 — part of check-in [e5bdac3d33] on branch feat/horizon-cones — feat(content): an origin classification memo extended by appends

    An origin re-reads its store for every horizon request: the reference facts behind the path classification and the trees of the whole held set. draft-fossil-horizon-00 §6.2 asks it to keep the classification keyed by cone digest and store prefix, extend it by the artifacts appended since, and recompute in full only when an arrival carries a name a held P, B or S card cited while it was absent.

    Memo keeps the store's cone-independent references (the reference facts, the check-in graph and the dangling P/B/S names) at a prefix, and per cone digest and per horizon the classification over them. A view extends each by the appended and filled rids: the loader's decisions for those rids alone, classification of the facts' new tails, and the tree walk of the check-ins K gained. Anything other than an append or an uncited fill (a cited arrival, a deleted or phantomized row, a first tree) reads the store in full. Views are copy-on-write and reach the memo only when published, so a rolled-back request leaves nothing behind. (user: [email protected], size: 7749) [annotate] [blame] [check-ins using]

  • 2026-10-22 22:48:31 — part of check-in [7dec3e4fb3] on branch feat/horizon-cones — Merge branch 'wip/hz-memo' into feat/horizon-cones

    The origin's classification memo (draft-fossil-horizon-00 §6.2): the reference graph and each cone's classification kept per store prefix and extended by appended artifacts, recomputed in full only when an arrival was already cited. A pull after a one-artifact push on fossil-scm.org's repository answers in about 0.25 s instead of 2.7 to 4.5 s. (user: [email protected], size: 7749) [annotate] [blame] [check-ins using]