Designing For Error Tolerance (XDEV17607)

Errors happen because developers and users are human. The wrong data is entered, the wrong task done. A routine gets stuck in an endless loop. A crash takes place for no obvious reason.In general, errors make for a poor user experience. This is why error tolerance is an important part of software design.This article describes how I make my demo project error-tolerant. I explain the differences between errors and exceptions and ways to handle them. I design a new controller, one that receives and records errors and exceptions. And I modify key controllers and views, making them able to detect and react to errors.