shoney.arickathil
c0b0dbb846
- README: shipped concurrency/HTTP/WebSockets sat in the roadmap as "not yet available"; "no package manager" contradicted [deps]; the deps example would not have compiled (the key IS the module name) - runtime/README: leads with wovm, wo-rt.c demoted to a historical section; dropped 2 nonexistent recipes, crates/rt, @gc refcounting, 13 suites -> 18 - employee + log-watcher READMEs claimed "does not compile"; both are gates - error catalog: +10 emitted codes incl WO-E250, the only diagnostic the shipped query surface raises; recorded why the sweep rotted - language-surface: group-by parses, then the typechecker refuses it - 00-code-review + 00-link-audit re-run; history kept, not rewritten - 48 dead Rust-era exploration links de-linked rather than re-pointed (their prose names the retired plan by number); successor map -> discarded.md - 08-project-structure: compiler/plan/ never existed; corpus has 9 dirs, 5 empty - releasing.md: dropped a --draft step the workflow never had - new docs/00-doc-audit.md: findings + disposition, incl one row where the audit was wrong and the doc it accused was right - status folders removed: 34 stories flat, status only in frontmatter; 252 links recomputed from resolved paths; board/board-views/structure retaught - story 24 -> in-progress, since frontmatter is now the only truth - new iteration 38: fs mutation verbs + net.connect, the two capability families no iteration owned - new iteration 39: gofiber/fiber v3.5.0 parity study. The ledger called CSRF/sessions unblocked by iteration 34's HMAC, but the runtime has no source of randomness at all - linkcheck skips .dev/.superpowers: 0 broken paths, 0 bad anchors Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
69 lines
2.9 KiB
Markdown
69 lines
2.9 KiB
Markdown
---
|
|
iteration: "9"
|
|
status: done
|
|
---
|
|
|
|
# Iteration 9 — database engine
|
|
|
|
> Format: `product/story-iteration-template`. Part of
|
|
> [Story — one language, one runtime, one database, one binary](00-story.md).
|
|
|
|
## Goals
|
|
|
|
- The language's oldest promise executes on the new runtime: every class is
|
|
a table. `insert` and `select` stop trapping (`DB_STUB` retires) and run
|
|
against class-shaped row storage inside the VM's shards.
|
|
- Data survives anything: a typed write-ahead log with ack-after-fsync,
|
|
parallel boot replay, and a crash battery proving no committed row is
|
|
ever lost and no half-applied transaction ever visible.
|
|
|
|
## Acceptance Criteria
|
|
|
|
- What to achieve?
|
|
- **Given** a class annotated `@table` and a method inserting rows,
|
|
- **when** the method runs,
|
|
- **then** the insert is WAL-logged before acknowledgment, visible to
|
|
subsequent `select`, and the pricing fixture that previously trapped
|
|
`DB_STUB` now passes with real data.
|
|
- What to achieve?
|
|
- **Given** kill -9 at arbitrary points during committed writes,
|
|
- **when** the process reboots and replays,
|
|
- **then** every acknowledged commit is present, no unacknowledged
|
|
partial write is visible, and replay across shards completes without
|
|
manual steps.
|
|
- What to achieve?
|
|
- **Given** a `@unique` field and a duplicate insert,
|
|
- **when** it executes,
|
|
- **then** the insert traps with the unique-violation code and
|
|
secondary indexes remain consistent (maintained only through the
|
|
engine's row choke points).
|
|
|
|
## Out Of Scope
|
|
|
|
- Cypher/document query paradigms and `LIVE` subscriptions (the query
|
|
layer's later phases; `prototypes/wo-db` stays the reference).
|
|
- Cross-shard 2PC transactions; Postgres mirroring (exists on the Rust
|
|
side; ports after parity).
|
|
|
|
## Info
|
|
|
|
- Doctrine: RAM is authoritative; the WAL makes it durable; indexes drift
|
|
unless writes go through the row API — the Rust runtime learned this
|
|
lesson, the C engine enforces it.
|
|
- The wo-db overlap manifest keeps the C++ prototype and this engine
|
|
answer-compatible where features overlap.
|
|
- **Ownership/GC analysis (2026-08-15):** the engine and the VM heap are two
|
|
memory worlds crossed only by copy — rows store no VM pointers, GC-managed
|
|
values in stored fields are a compile error, and everything a query returns
|
|
is copied out — so the collector never traces rows and the engine never
|
|
counts references. The full analysis (row views as borrows without a
|
|
runtime net, cursor stability, GC-pause interaction) lives in the 9b
|
|
design's section 6:
|
|
[`2026-08-15-table-relations-query-design.md`](../../superpowers/specs/2026-08-15-table-relations-query-design.md).
|
|
|
|
## Proposed Solution
|
|
|
|
- Execute the existing plan: `docs/superpowers/plans/2026-08-01-db-engine-binding.md`
|
|
(class-shaped row slabs with a choke-point row API, typed WAL + parallel
|
|
replay + crash battery, insert execution, doctrine-enforced indexes +
|
|
`@unique` trap, select subset, db corpus).
|