race-conditions
Race Conditions
Overview
When outcome depends on timing, you have a race. Races are bugs waiting to happen.
Race conditions occur when correctness depends on the relative timing of events. They're insidious because they work most of the time, fail randomly, and are nearly impossible to reproduce.
When to Use
- Multiple async operations access shared state
- Database read-then-write patterns
- Concurrent API requests modify same resource
- "Works in development, fails in production"
- Intermittent bugs that can't be reproduced
The Iron Rule
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84lazy-loading
Use when loading all data upfront. Use when initial page load is slow. Use when fetching data that might not be needed.
54keep-it-simple
Use when tempted to write clever code. Use when solution feels complex. Use when showing off skills instead of solving problems.
51separation-of-concerns
Use when component does too many things. Use when mixing data fetching, logic, and presentation. Use when code is hard to test.
44single-responsibility-principle
Use when creating or modifying classes, modules, or functions. Use when feeling pressure to add functionality to existing code. Use when class has multiple reasons to change.
39fail-fast
Use when handling errors. Use when tempted to catch and swallow exceptions. Use when returning default values to hide failures.
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