Intermediate Course
Lesson 8 of 100

Real-World Patterns — @retry, @timer, @cache

Build production-quality versions of the three most commonly used decorator patterns in professional Python.

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Lesson Briefing

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"Three decorator patterns appear in almost every serious Python codebase: retry (for resilient API calls), timer (for performance monitoring), and cache (for expensive computations). Today you build production-quality versions of all three — the kind you'd actually use in the budget dashboard. These aren't toy implementations: they handle edge cases, have proper configuration, and integrate with Python's logging module. After this lesson you'll have a decorator library you can use in real projects."

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