Most SaaS products get authentication almost right.

They use JWTs. That’s correct implementation, but either:

• Tokens expire too quickly, so users get logged out constantly
• Or they last too long, creating security risks

What’s usually missing? A proper refresh token implementation.

In a recent audit, I spotted this exact issue.The JWT token was set to expire after 6 hours, with no refresh token mechanism in place.

Users were getting kicked out almost every day.They had to log in again daily, sometimes even twice a day.

I flagged it and explained it to the client.The client got it fixed through the previous developer.

Most teams think the login feature is “done” once it works. But they don’t evaluate the user experience on a day-to-day basis.