Arkeion ἀρχεῖον

Documentation

The design of the engine, in the open — architecture, file format, API and search internals. Hosted here, not in the repo.

01 Architecture Layers, modules and the central copy-on-write decision. 02 File format The binary layout: header, pages, commits, the hash chain. 03 Rust API The public surface: Database, Connection, queries, transactions. 04 SQL dialect The dialect and the AS OF time-travel extension. 08 Sovereignty The tender/compliance case: three planes, GDPR mapping, and the honest limits. 11 Client / server The native protocol, sessions, branches, TLS and auth. 12 Full-text search Term dictionary, BM25, snippet/highlight, prefix-compressed postings. 13 Vector search IVF / IVF-PQ, int8 re-rank, hybrid RRF, parallel + streaming build.

Prefer the source? The full engine — and the internal docs (ADRs, milestones, risks) — live on GitLab.