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brainy/src
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David Snelling ceed70d7be perf(8.0): per-id history chains for O(log) historical reads + bounded delta cache 
Historical reads (asOf/get) scanned the global committedGens list linearly,
making them O(database-age): a read of an unchanged entity at an old pin scaled
~12x for 10x history depth. Add per-id inverted history chains (nounChains/
verbChains) so resolveAt binary-searches the id's own generation chain instead —
O(log) and flat with depth. Chains build lazily under the commit mutex,
maintain incrementally on commit, and invalidate on compaction.

Also bound deltaCache (LRU cap 4096; getDelta re-reads evicted deltas) so a
long-lived high-write process's heap is O(cap) not O(generations) on the
disk-backed path, and binary-search commitTimestampAtOrBefore (O(log)).

Verified: 373 unit tests green; new tests/unit/db/generation-chain.test.ts
covers chain resolution, eviction re-read, and chain rebuild after compaction.
2026-06-22 13:47:33 -07:00
..
aggregation feat(8.0): id-normalization (#18) + aggregation min/max delete-safety + RC-safe release 2026-06-20 14:46:40 -07:00
cli feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
db perf(8.0): per-id history chains for O(log) historical reads + bounded delta cache 2026-06-22 13:47:33 -07:00
embeddings test(8.0): Tier-1 integration via deterministic embedder (suite runnable again) 2026-06-16 12:44:14 -07:00
errors chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
graph feat(8.0): thread commit generation through the graph-write provider contract 2026-06-16 09:42:35 -07:00
hnsw feat(8.0): zero-config finalize + cut JS quantization (config.vector = recall + persistMode) 2026-06-15 10:08:51 -07:00
import feat(8.0): reserved-field enforcement — reservedFieldPolicy defaults to throw 2026-06-20 15:37:21 -07:00
importers feat(8.0): reserved-field enforcement — reservedFieldPolicy defaults to throw 2026-06-20 15:37:21 -07:00
indexes/columnStore fix(8.0): column-store range queries honor exclusive bounds (lessThan/greaterThan) 2026-06-19 11:01:41 -07:00
integrations chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
mcp feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
migration feat(8.0)!: delete fork/branch/commit/history/versions — superseded by the Db API 2026-06-10 15:22:47 -07:00
neural feat(8.0): reserved-field enforcement — reservedFieldPolicy defaults to throw 2026-06-20 15:37:21 -07:00
patterns chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
storage feat(8.0): brain.graph.export() + noun-walk cursor + noun visibility hydration 2026-06-21 10:22:12 -07:00
streaming chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
transaction feat(8.0): thread commit generation through the graph-write provider contract 2026-06-16 09:42:35 -07:00
triple chore(8.0): Phase A + B — purge all @deprecated APIs + cacheManager dead branches 2026-06-09 15:33:56 -07:00
types feat(8.0): brain.graph.export() + noun-walk cursor + noun visibility hydration 2026-06-21 10:22:12 -07:00
universal feat(8.0): id-normalization (#18) + aggregation min/max delete-safety + RC-safe release 2026-06-20 14:46:40 -07:00
utils feat(8.0): GraphAccelerationProvider contract — the native graph-engine seam 2026-06-21 08:12:22 -07:00
vfs feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
brainy.ts test(8.0): cover the native graph seam + make provider resolution factory-tolerant 2026-06-22 09:34:09 -07:00
coreTypes.ts feat(8.0): visibility field (public/internal/system) on nouns + verbs 2026-06-16 15:20:26 -07:00
index.ts refactor(8.0): graph analytics contract — intent names, not algorithm names 2026-06-22 09:54:01 -07:00
internals.ts feat(8.0): EntityIdMapper U32 ceiling + EntityIdSpaceExceeded error 2026-06-02 10:20:01 -07:00
plugin.ts refactor(8.0): graph analytics contract — intent names, not algorithm names 2026-06-22 09:54:01 -07:00
setup.ts chore(8.0): collapse dead defensive guards + redundant polyfills 2026-06-09 16:46:16 -07:00
unified.ts chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00