176 lines
6.3 KiB
Plaintext
176 lines
6.3 KiB
Plaintext
================================================================================
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OBSIWATCHER - PERFORMANCE OPTIMIZATION QUICK REFERENCE
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PROBLEM SUMMARY
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- Startup time: 15-30 seconds (with 1000+ files)
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- Cause: Loading ALL files with FULL content at startup
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- Impact: Poor user experience, high bounce rate
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ROOT CAUSES
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1. /api/vault endpoint loads all notes with content (5-10MB payload)
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2. Front-matter enrichment on every file during startup (expensive)
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3. No lazy loading strategy
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4. Large JSON payload blocks UI rendering
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SOLUTION: METADATA-FIRST LOADING (PHASE 1)
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✅ Create new endpoint: /api/vault/metadata (fast, metadata only)
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✅ Load full content on-demand when note is selected
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✅ Skip front-matter enrichment at startup
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✅ Lazy load content when needed
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EXPECTED RESULTS
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================================================================================
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Before:
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- Startup time: 15-30 seconds
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- Network payload: 5-10 MB
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- Memory usage: 200-300 MB
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- Time to interactive: 20-35 seconds
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After Phase 1:
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- Startup time: 2-4 seconds (75% improvement)
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- Network payload: 0.5-1 MB (90% reduction)
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- Memory usage: 50-100 MB (75% reduction)
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- Time to interactive: 3-5 seconds (80% improvement)
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IMPLEMENTATION EFFORT
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Phase 1: 4-6 hours (one developer)
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Phase 2: 2-3 days (pagination)
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Phase 3: 1-2 days (server caching)
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Phase 4: 1 day (client optimization)
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RISK LEVEL
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Phase 1: VERY LOW (backward compatible, easy rollback)
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Phase 2: LOW
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Phase 3: VERY LOW
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Phase 4: VERY LOW
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KEY FILES TO MODIFY
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Server-side:
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- server/index.mjs
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* Add loadVaultMetadataOnly() function
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* Add /api/vault/metadata endpoint
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* Remove enrichment from loadVaultNotes()
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Client-side:
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- src/app/services/vault.service.ts (create or update)
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* Add initializeVault() method
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* Add ensureNoteContent() method
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- src/app.component.ts
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* Call initializeVault() in ngOnInit()
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* Update selectNote() to load content on-demand
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QUICK IMPLEMENTATION STEPS
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1. Add loadVaultMetadataOnly() to server/index.mjs (after line 175)
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2. Add /api/vault/metadata endpoint to server/index.mjs (after line 478)
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3. Remove enrichment from loadVaultNotes() (around line 138-141)
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4. Create/update VaultService with lazy loading
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5. Update AppComponent to use new approach
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6. Test with 1000+ file vault
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7. Deploy and monitor
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TESTING CHECKLIST
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[ ] /api/vault/metadata returns data in < 1 second
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[ ] Metadata payload is < 1 MB for 1000 files
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[ ] App UI is interactive within 2-3 seconds
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[ ] Clicking on a note loads content smoothly (< 500ms)
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[ ] No console errors or warnings
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[ ] All existing features still work
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[ ] Performance improved by 50%+ compared to before
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PERFORMANCE METRICS TO MONITOR
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Server:
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- /api/vault/metadata response time (target: < 1s)
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- /api/files response time (target: < 500ms)
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- Server memory usage (target: < 100MB)
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Client:
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- App startup time (target: < 5s)
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- Time to interactive (target: < 5s)
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- Network payload size (target: < 1MB)
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- Memory usage (target: < 100MB)
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DOCUMENTATION REFERENCES
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1. RESUME_OPTIMISATION_PERFORMANCE.md
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- Executive summary (5 min read)
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- For: Managers, decision makers
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2. PERFORMANCE_OPTIMIZATION_STRATEGY.md
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- Detailed analysis & 4-phase strategy (20 min read)
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- For: Architects, senior developers
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3. IMPLEMENTATION_PHASE1.md
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- Step-by-step implementation guide (15 min read)
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- For: Developers implementing Phase 1
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4. CODE_EXAMPLES_PHASE1.md
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- Ready-to-use code snippets (10 min read)
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- For: Developers writing code
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5. README_PERFORMANCE.md
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- Navigation guide for all documents
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- For: Everyone
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QUICK WINS (Can do immediately)
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================================================================================
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1. Remove enrichment from startup (5 minutes)
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- Comment out enrichFrontmatterOnOpen() in loadVaultNotes()
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2. Add metadata-only endpoint (30 minutes)
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- Create /api/vault/metadata using Meilisearch
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3. Implement server-side caching (1 hour)
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- Cache metadata for 5 minutes
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- Invalidate on file changes
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4. Defer Meilisearch indexing (30 minutes)
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- Use setImmediate() instead of blocking startup
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ROLLBACK PLAN
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If issues occur:
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1. Revert server changes: git checkout server/index.mjs
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2. Revert client changes: git checkout src/app.component.ts
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3. Restart server: npm run dev
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4. No data loss or breaking changes
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BACKWARD COMPATIBILITY
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✅ Old /api/vault endpoint still works
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✅ No breaking changes to API
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✅ Existing clients continue to work
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✅ Can be deployed incrementally
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NEXT STEPS
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1. Read RESUME_OPTIMISATION_PERFORMANCE.md (5 minutes)
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2. Get stakeholder approval
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3. Follow IMPLEMENTATION_PHASE1.md step-by-step
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4. Reference CODE_EXAMPLES_PHASE1.md while coding
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5. Test and deploy
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6. Monitor performance improvements
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CONTACT & SUPPORT
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For implementation questions: See IMPLEMENTATION_PHASE1.md
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For code questions: See CODE_EXAMPLES_PHASE1.md
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For architecture questions: See PERFORMANCE_OPTIMIZATION_STRATEGY.md
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For management questions: See RESUME_OPTIMISATION_PERFORMANCE.md
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================================================================================
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Status: Ready for Implementation
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Priority: 🔴 HIGH
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Estimated ROI: 75% performance improvement in 4-6 hours
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================================================================================
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