Dzone iconDzoneSep 9, 2026

Memory-First Indexes in SQL Server 2025: Redefining Performance for Hybrid Workloads

Most production systems handle both transactional operations and analytical queries simultaneously. These mixed workloads, often referred to as hybrid workloads, place significant pressure on traditional database indexing and storage strategies.

Memory-First Indexes in SQL Server 2025: Redefining Performance for Hybrid Workloads

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Useful takeaways from this story.

Most production systems handle both transactional operations and analytical queries simultaneously.

These mixed workloads, often referred to as hybrid workloads, place significant pressure on traditional database indexing and storage strategies.

In such environments, disk-based indexes can become a performance bottleneck.

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The useful part

Most production systems handle both transactional operations and analytical queries simultaneously. These mixed workloads, often referred to as hybrid workloads, place significant pressure on traditional database indexing and storage strategies. In such environments, disk-based indexes can become a performance bottleneck.

How it works

  • Modern database environments rarely run a single type of workload.
  • When transactional and analytical queries compete for disk I/O, it often results in increased latency, reduced throughput, and inconsistent query performance.

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