┌─ 404human ─────────┐
  │  $ whoami          │
  └────────────────────┘
 404human
Rust runtimes, background jobs, AI infrastructure

build log · 5 entries · building — D4 ship gate: sustained load red, root-causing

Durable Workflow Runner: the build log

A background-task runner where accepting a job is a durable commit — acknowledged work survives process death, and history is bounded by design. Rust, a file journal, one writer. Built in the open.

MilestoneNameEntriesState
D0 model 1 done
D1 journal 0 done
D2 execute 0 done
D3 maintain 1 done
D4 ship 3 ● in progress

Latest · D4 · 0.5: Load battery: red gate

D0 · model

The state machine: transitions, invalid states, identities, limits — deterministic tests under a fake clock.

0.1
Contract + scaffold

Guide 04 read end to end: a file journal is the authority, one writer, at-least-once attempts — the workspace, docs and crate skeletons are laid out.

Read the full entry →

 0

D1 · journal

Framed append-only records, checksums, exclusive writer, generations — the four crash cases proven.

D2 · execute

Allowlisted HTTP handlers, checkpoints, delayed work, bounded retries, cancellation, effect reconciliation.

D3 · maintain

Compaction into generations, seven-day terminal expiry, backup and restore, bounded diagnostics.

0.2
The journal survives kill -9

D0–D3 implemented and drill-proven: the framed journal, the single writer, replayed recovery, compaction into a new generation, and a backup-restored second server. Plus the bug the drill caught that tests did not.

Read the full entry →

D4 · ship ● in progress

CLI and inspection UI, a pilot workflow, the load plan — and a second developer restores a real directory.

0.3
The UI catches a journal bug

GET /jobs + a SvelteKit inspector — and the journaled-refusal bug the first smoke test surfaced.

Read the full entry →
0.4
Test pass + orphan fix

A full outside-guide test pass: workspace tests, pilot kill-9 → restore, dedup and refusal drills — plus the restart-orphan bug the drills caught and the fix that reconciles it.

Read the full entry →
0.5
Load battery: red gate

Replay, a submit rate ladder and the 1M-submit sustained run — committed with machine and commit. The sustained gate is red twice over, solo included: the journal's per-record fsync is the ceiling, and admission refuses rather than loses.

Read the full entry →
load ● The sustained-load gate — red twice, solo included; the fsync ceiling is being root-caused — being built now
restore A second developer restores a real journal directory, unaided · planned

← Home · All build logs