## Security Improvements - Fix timing attack in verifyApiKey with fixed 256-byte buffer - Fix sortOrder SQL injection with whitelist validation - Fix rate limiting bypass for non-Cloudflare traffic (fail-closed) - Remove stack trace exposure in error responses - Add request_id for audit trail (X-Request-ID header) - Sanitize origin header to prevent log injection - Add content-length validation for /sync endpoint (10KB limit) - Replace Math.random() with crypto.randomUUID() for sync IDs - Expand sensitive data masking patterns (8 → 18) ## Performance Improvements - Reduce rate limiter KV reads from 3 to 1 per request (66% reduction) - Increase sync batch size from 100 to 500 (80% fewer batches) - Fix health check N+1 query with efficient JOINs - Fix COUNT(*) Cartesian product with COUNT(DISTINCT) - Implement shared logger cache pattern across repositories - Add CacheService singleton pattern in recommend.ts - Add composite index for recommendation queries - Implement Anvil pricing query batching (100 per chunk) ## QA Improvements - Add BATCH_SIZE bounds validation (1-1000) - Add pagination bounds (page >= 1, MAX_OFFSET = 100000) - Add min/max range consistency validation - Add DB reference validation for singleton services - Add type guards for database result validation - Add timeout mechanism for external API calls (10-60s) - Use SUPPORTED_PROVIDERS constant instead of hardcoded list ## Removed - Remove Vault integration (using Wrangler secrets) - Remove 6-hour pricing cron (daily sync only) ## Configuration - Add idx_instance_types_specs_filter composite index - Add CORS Access-Control-Expose-Headers Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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18 KiB