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← CoursesSystem Design for Python JuniorsModule 2 · Scalability & CachingDistributed locks (Redlock pattern)quiz19 / 105
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📝 **Question:** Two cron containers accidentally both run nightly billing. You need exactly-one execution. What's the simplest correct approach? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
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📝 **Question:** Two cron containers accidentally both run nightly billing. You need exactly-one execution. What's the simplest correct approach? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.

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