You''ve been running backups for 18 months. The disk dies. You go to restore. The backup files are empty. Or corrupted. Or the backup job failed silently on month 4 and you''ve been running without a backup ever since. Untested backups are not backups.
One synchronous, blocking operation in your Node.js server blocks EVERY concurrent request. JSON.parse on a 10MB payload, a for-loop over 100k items, or a synchronous file read — all of them freeze your event loop and make your entire server unresponsive. Here''s how to find and eliminate blocking I/O.
Your API logs show 10,000 requests per minute. Your analytics show 50 active users. The other 9,950 RPM is bots — scrapers, credential stuffers, inventory hoarders, and price monitors. They''re paying your cloud bill while your real users experience slowness.