MongoDB Performance Issues: Understanding WiredTiger Cache Eviction
wiredtiger•Jan 12, 2026

MongoDB Performance Issues: Understanding WiredTiger Cache Eviction

When MongoDB appears slow, it's often due to cache starvation rather than cache eviction. Understanding the WiredTiger cache eviction process is crucial for optimizing MongoDB performance.

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Key summary

This article delves into the performance mystery of MongoDB, specifically exploring WiredTiger cache eviction under load. It aims to provide insights into the factors that contribute to MongoDB's slow performance.

TL;DR

  • MongoDB's slow performance is often due to cache starvation, not eviction
  • WiredTiger cache eviction plays a crucial role in MongoDB's performance
  • Cache eviction under load can lead to performance issues
  • Understanding cache eviction is key to optimizing MongoDB performance
  • Factors contributing to cache starvation include high load and inefficient queries
  • Optimizing MongoDB performance requires a deep understanding of cache eviction

This content is automatically summarized using AI. For full context, always refer to the original article.

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