How a DNS Failure in AWS Stopped Half the Internet for 15 Hours
What happens when DNS stops working? A practical lesson from October 2025, when AWS us-east-1 paralyzed thousands of applications.
Why NaN !== NaN in JavaScript (and the IEEE 754 story behind it)
Learn where NaN came from in JavaScript and why it cannot be compared
Why typeof null === object
Learn why typeof null returns ‘object’ instead of ’null’ in JavaScript