A good system is not designed to "avoid" errors, but to "tolerate" errors.
Being able to run is technical skill; being able to run forever is engineering.
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Demo for functionality, Production for stability.
Today, a bug in a lower-level SDK's reconnection logic consumed all 65,535 ports in 2 minutes. The system crashed clearly and unmistakably.
This once again validates a fundamental rule of software engineering:
You think you're writing logic, but you're actually writing defenses.
Newcomers obsess over feature implementation; veterans obsess over exception handling:
- Network jitter
- Dependency crashes
- Resource exhaustion
- Invalid input
These are not "accidents"; they are the norm.
A good system is not designed to "avoid" errors, but to "tolerate" errors.
Being able to run is technical skill; being able to run forever is engineering.