MongoDB Tutorial 0/120 lessons ~6 min read Lesson 70

    Performance Monitoring

    Monitoring in production means watching opcounters, queue depths, slow queries and lock contention.

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    Focus
    2 guided sections
    Practice signal
    Examples included
    Career prep
    Foundation builder

    Introduction

    Monitoring in production means watching opcounters, queue depths, slow queries and lock contention. Atlas Metrics + Performance Advisor give this for free; self-hosted teams use Prometheus + Grafana.

    Best practices

    • Set alerts on slow-query count, replication lag and disk usage.
    • Tail the slow query log weekly.
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