What common mistake do developers make with Get routes, why does the mistake cause problems, and what is the safer approach?

What common mistake do developers make with Get routes, why does the mistake cause problems, and what is the safer approach? One recurring problem with GET routes is applying it without understanding the boundary it protects. Using a state-changing HTTP action as a GET route merely because it is convenient for linking. In addition, GET routes are commonly used for retrieving pages or read-only resources. Safer engineering approach: keep the responsibility in the correct layer, use the framework's supported API, validate and authorize inputs, avoid hidden side effects, and verify the behavior with tests.