Hidden CPU Burn: How Scalar User-Defined Functions Trap Your Queries in RBAR Loops
Unwrapping row-by-row bottlenecks: Why modular code kills database performance, how to track hidden UDF execution penalties, and how to convert functions into high-speed inline expressions.
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Sharing a decade of database lessons, failures, and fixes.
Senior Database Administrator specializing in SQL Server core internals, high-concurrency optimization, and enterprise database architecture. Over the last decade, my focus has been on mastering and breaking down complex database engine mechanics—from B-Tree performance tuning and TempDB allocation contention to deploying resilient cloud database infrastructure and high-availability clusters. I write at TunedInstance.com to share real-world production triage, architectural blueprints, and deep-dive technical strategies to keep mission-critical workloads fast, secure, and highly available.
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