8673723319
Replace ScoredCandidate.signal_snapshot Vec<(String,f64)> with
SmallVec<[(SignalKey,f64); 4]> where SignalKey is Static(&'static str)
| Owned(Arc<str>):
- Compile-time-constant labels (sort bases, relevance, co_engagement,
preference_affinity) -> Static: zero allocation, pointer-copy clone.
- Dynamic {signal}_boost/_penalty/_decay labels built once per query in a
RuleLabels hoist (was format! per-candidate-per-rule), shared by Arc.
Cohort rescore hoisted the same way.
- scored accumulator pre-sized to candidates.len().
- Owned Strings rebuilt only at the two response-assembly sites (<= limit).
Byte-identical output: full 1896-test lib suite green. Measured win
(cargo bench --bench ranking, committed-base vs working-tree):
score_200_hot 23.89->21.04us (-11.9%), score_200_trending
27.66->25.85us (-6.5%), score_200_full_pipeline 27.88->26.97us (-3.3%).
smallvec promoted from the lock to a direct dep (no new dependency
surface). perf-sweep doc updated; T2 (per-term DashMap collapse) next.
|
||
|---|---|---|
| .. | ||
| guides | ||
| ops | ||
| planning | ||
| profiling | ||
| research | ||
| reviews | ||
| runbooks | ||
| specs | ||
| content-strategy.md | ||
| personal-briefing-beachhead.md | ||
| README.md | ||
| roadmap-to-cluster.md | ||
tidalDB Engineering Docs
The engineering documentation home. Top-level product docs (VISION, USE_CASES, SEQUENCE, ARCHITECTURE, API, QUICKSTART, CODING_GUIDELINES, thoughts) live at the repository root; everything below is the deeper engineering record.
This and the repo root are the two canonical doc homes. There is intentionally no per-crate doc mirror (no
tidal/docs/). Edit the canonical file, never a copy.
Component specs — specs/
The authoritative component specifications (status: Implemented, M0–M8).
| # | Spec | # | Spec |
|---|---|---|---|
| 00 | Architecture overview | 08 | Query engine |
| 01 | Storage engine | 09 | Ranking & scoring |
| 02 | Entity model | 10 | Feedback loop |
| 03 | Signal system | 11 | Schema |
| 04 | Relationships | 12 | Cold start |
| 05 | Cohorts | 13 | Concurrency |
| 06 | Text retrieval | 14 | Scale architecture |
| 07 | Vector retrieval |
Planning — planning/
- ROADMAP.md — milestones M0–M11, phase status, known gaps
- roadmap-to-cluster.md — adopted M11 plan: gap analysis + phase specs taking the multi-process cluster from experimental to enterprise-grade (m11p1–p5 ✅; p6–p9 planned), grounded in the 2026-06-10 live stress-test baselines
- PRODUCT_ROADMAP.md · architecture-review.md · roadmap-cohort-analysis.md · site-cohort-analysis.md
- Per-milestone phase/task archive:
planning/milestone-0,1,2,3,5,7,8,9,10,11,p/
Code reviews — reviews/
- M0–M10 code review — 2026-06-07 — seven-dimension re-review, 88 verified findings
- M0–M10 code review — 2026-06-08 — seven-dimension review, 142 findings (latest pass)
- M0–M10 seven-dimension review — additional pass (2 BLOCKERs: signal-checkpoint trim, 30-day window)
Guides — guides/
Task-oriented, build-an-app docs (complements the root QUICKSTART.md and API.md):
- Build a feed app — end-to-end TikTok/Reels-style "For You" feed, embedded and over HTTP
- Embedding integration — wiring a real embedding model (OpenAI / Cohere / local) into the write + query paths
- Server deployment — running the
tidal-serverHTTP service: config, auth, the served OpenAPI spec, Docker - Ranking-profile reference: ai-lookup/services/ranking-profiles.md — all 25 built-in profiles
Operations — ops/ and runbooks/
- Monitoring · Prometheus alerts · Grafana dashboard · Capacity planning · Recovery
- Runbooks: Kubernetes · Cluster (experimental)
Research — research/
ANN (1, 2) · Tantivy (1, 2) · Signal ledger (1, 2) · WAL · Type system · Tooling & diagnostics · Enterprise-readiness risks
Profiling — profiling/
Hotspot analysis · Scale baselines · Signal memory · Signal rollup eval · Social scale · Tantivy merge tuning · USearch tuning