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cc73639ae5fc2daf4d1c53299737f2fd50a26a41
amethyst/geode/plans/README.md
Claude cc73639ae5 docs(geode): SQLite knobs A/B verdict — no winner, knobs stay off by default 
Backlog items 4-5 close. Both-variants-in-one-run A/B at 50k, repeated
with relay order reversed: every delta flipped with the order (the
second-running relay won queries and ingest latency in BOTH runs), so
readers=8 / mmap_size=256MiB / temp_store=MEMORY / periodic PRAGMA
optimize are all noise-level on container-class hardware. The config
plumbing stays (hardware-dependent, operators should measure their own
box); the example config now says so explicitly.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TtDNpayEYvJH7QuPswND3A
2026-07-04 00:50:37 +00:00

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geode plans

Audited 2026-06-30. 5 plans: 4 shipped (archived), 0 in-progress, 0 queued, 1 closed (negative result).

Performance-focused design docs for future work. Each file is a self-contained sketch — problem statement, observed numbers, proposed fix, how to verify, risks. None of these are committed work; they're the queue.

Ordered roughly by expected impact:

Plan Headline gain Status
archive/2026-05-07-event-ingestion-batching.md 5–10× write EPS via SQLite group commit + ingest pipelining shipped (archived)
archive/2026-05-07-live-broadcast-fanout-index.md >10× fanout speedup at >2 000 subscribers shipped (archived)
archive/2026-05-07-connection-scaling.md 2 000 → 10 000+ concurrent connections shipped (archived)
archive/2026-05-07-negentropy-large-corpus.md 25× lower memory + faster NEG-OPEN on M-event corpora shipped (archived)

Verification target for each plan is a new method on geode.perf.LoadBenchmark (gated by -DrunLoadBenchmark=true) so regressions show up in the regular CI matrix once they're enabled.

Archived (shipped)

Closed (negative result)

Plan Verdict
2026-07-04-sqlite-knobs-ab.md readers/mmap/temp_store/PRAGMA-optimize knobs: no winner on container hardware; every delta flipped with run order. Knobs ship config-gated, off by default.