Files
k-photos/crates/adapters/postgres/migrations/015_performance_indexes.sql
Gabriel Kaszewski bcaf49cc81 perf: scale fixes for 1M+ photo libraries
Indexes: share_targets.target_id, duplicate_groups.status,
GIN on stacks members + duplicate candidates JSONB,
composite (owner_user_id, created_at DESC) on assets.

N+1 elimination: batch metadata loading via find_by_assets(ids)
using WHERE asset_id = ANY($1), used in timeline + sidecar export.

Visibility: cache find_targets_for_user per request via OnceCell,
extract filter_visible helper to reduce duplication.

Streaming: FileStoragePort.open_file() returns (DataStream, u64),
LocalFileStorage uses ReaderStream instead of loading full file.
serve_file/serve_derivative use Body::from_stream().

Unbounded queries: sidecar full_export/import batched in 500-row
chunks instead of u32::MAX. find_unresolved paginated with
limit/offset. list_duplicates API accepts pagination params.
2026-05-31 22:40:25 +02:00

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SQL

CREATE INDEX idx_share_targets_target ON share_targets(target_id);
CREATE INDEX idx_duplicate_groups_status ON duplicate_groups(status);
CREATE INDEX idx_stacks_members ON asset_stacks USING GIN (members);
CREATE INDEX idx_duplicate_candidates ON duplicate_groups USING GIN (candidates);
CREATE INDEX idx_assets_created ON assets(owner_user_id, created_at DESC);