Files

T

yonlu ced58fe6a9 perf(07-01): eliminate redundant lookups in SetQueue Phase 2

- Add phase1Meta parameter to resolveRemainingTracks
- Filter out already-resolved paths before lookupTrackMetaBatch call
- Merge Phase 1 results into Phase 2 lookup map
- Pass batchMeta from SetQueue call site to resolveRemainingTracks
- For 1000-track queue with Phase 1 resolving 50, Phase 2 now queries 950 instead of 1000

2026-03-04 20:58:22 -05:00

3.0 KiB

Raw Blame History

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase

plan

subsystem

tags

requires

provides

affects

tech-stack

key-files

key-decisions

patterns-established

requirements-completed

duration

completed

07-backend-performance

performance

startup

deferred-loading

dom-ready

wails

phase	provides
06-sql-consolidation-code-quality	stable frontend store and library data access patterns

Deferred LibraryStore eagerFetch — app shell renders before backend data roundtrips

08-frontend-polish

added

patterns

deferred-initialization via DOMContentLoaded event

created

modified

frontend/src/store/library-store.ts

DOMContentLoaded over load event — fires earlier (after HTML parsed) without waiting for all resources, still defers past module evaluation

Deferred singleton initialization: singleton constructors should not fire async work; defer to DOM ready events

PERF-03

1min

2026-03-05

Phase 7 Plan 2: Defer Library Data Loading Summary

Deferred LibraryStore eagerFetch from constructor to DOMContentLoaded event, ensuring app shell renders instantly before 4 backend data roundtrips begin

Performance

Duration: 1 min
Started: 2026-03-05T01:53:27Z
Completed: 2026-03-05T01:54:49Z
Tasks: 1
Files modified: 1

Accomplishments

Removed eagerFetch() call from LibraryStore constructor so module evaluation no longer triggers 4 backend roundtrips
Added deferEagerFetch() method that waits for DOMContentLoaded event (or calls immediately if DOM already parsed)
App shell now renders before data fetching competes for resources
All 4 data types (tracks, albums, artists, genres) still eagerly loaded once DOM is ready
Post-scan invalidation behavior unchanged — invalidate() still calls eagerFetch() directly

Task Commits

Each task was committed atomically:

Task 1: Defer eagerFetch from constructor to post-DOM-ready - cd98ad6 (perf)

Files Created/Modified

frontend/src/store/library-store.ts - Removed eagerFetch from constructor, added deferEagerFetch with DOMContentLoaded listener

Decisions Made

Used DOMContentLoaded instead of load event — fires earlier (after HTML parsed, before stylesheets/images finish) which minimizes delay in data availability while still deferring past the initial module evaluation. The load event would unnecessarily wait for all resources before beginning data fetches.

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

Plan 02 complete — deferred library loading implemented
Plan 01 (lazy module loading) may still be pending
Frontend data loading is now deferred to post-DOM-ready, providing instant app shell render

Self-Check: PASSED

frontend/src/store/library-store.ts exists
Commit cd98ad6 exists in git history

Phase: 07-backend-performance Completed: 2026-03-05

3.0 KiB Raw Blame History