Have you ever experienced doing something for a long time that was ultimately not implemented or postponed?

Yes, in development with Go, as in any other field, there are cases when you work on a feature or optimization for a long time, and ultimately it is not implemented or postponed. This can happen due to changing business priorities, the emergence of new requirements, or technical constraints. It is important in such situations to remain flexible, document the results, and be ready to quickly switch to other tasks. Such experience teaches better risk assessment and timely communication with the team and management.