IMPLEMENTATION_CHECKLIST.md

Scheduled Transaction Executor - Implementation Checklist

Status: ✅ COMPLETE AND READY FOR TESTING

✅ Implementation Complete

• Core executor with polling loop
• Database migration for execution history
• Error classification (retryable vs permanent)
• Retry logic (3 attempts, 5-min intervals)
• Failure notifications via webhook
• API endpoints (execute-now, history query)
• Server lifecycle integration
• Structured logging with Pino
• 15 comprehensive test cases
• Complete documentation

✅ Acceptance Criteria

• Auto-execute at scheduled time (±60s)
• Retry 3 times with 5-min intervals
• Mark failed & notify after max retries
• Manual execute-now trigger
• Queryable execution history
• ≥5 test cases (15 total)

✅ Code Quality

• All files compile without errors
• Matches project conventions
• Comprehensive comments
• Consistent error handling
• No hardcoded secrets
• Structured logging

✅ Testing

• Execution history logging (3 tests)
• Retry logic (3 tests)
• Execution window (2 tests)
• Execute-now endpoint (2 tests)
• Edge cases (2 tests)
• Frequency recurrence (3 tests)

Pre-Deployment

• Run: pnpm install
• Test: pnpm test
• Lint: pnpm lint
• Migrate: pnpm run migrate
• Code review: 2+ approvals
• Monitor logs on deployment

Configuration

SCHEDULED_EXECUTOR_INTERVAL_MS=60000        # Polling interval
SCHEDULED_TX_MAX_RETRIES=3                  # Max attempts
SCHEDULED_TX_RETRY_INTERVAL_MS=300000       # 5 minutes

Files Reference

• backend/src/services/scheduledExecutor.js - Main engine (534 lines)
• backend/migrations/011_scheduled_txn_executions.js - DB schema
• backend/__tests__/scheduledExecutor.test.js - 15 tests
• backend/src/routes/scheduledTransactions.js - API endpoints
• SCHEDULED_TRANSACTION_EXECUTOR.md - Full documentation