Activity

Summary

• Adds automatic background syncing with APScheduler for all users at configurable intervals
• Implements rate-limit-aware orchestration that respects Polar API's 15-min and 24-hour windows
• Creates priority queue system (CRITICAL/HIGH/NORMAL/LOW) for efficient multi-user sync
• Adds comprehensive SyncLog model for complete audit trail of every sync operation
• Implements consistent error classification with SyncErrorType enum
• Enables post-sync analytics (automatic baseline recalculation and pattern detection)

Key Files

• src/polar_flow_server/services/scheduler.py - APScheduler background sync
• src/polar_flow_server/services/sync_orchestrator.py - Rate-limit aware orchestration
• src/polar_flow_server/services/sync_error_handler.py - Error classification
• src/polar_flow_server/models/sync_log.py - Comprehensive audit trail model
• alembic/versions/f7g8h9i0j1k2_add_sync_logs_table.py - Migration for sync_logs table

Configuration

Test Plan

• All 74 existing tests pass
• Lint checks pass (ruff)
• Type checks pass (mypy)
• Manual integration test with real Polar API
• Verify scheduler starts on app startup
• Verify sync_logs populated after sync cycle

Stu Mason + AI [email protected]