TL;DR Problem: I was building an API that was blindly updating SharePoint list items, even when users didn’t actually change anything. Classic “save happy” user behavior was triggering thousands of pointless API calls. Solution: Built smart field change detection that asks …

TL;DR Problem: Client making 90,000 CSOM calls/month, 88% were redundant EnsureUser operations for users already on the site. Solution: Use FieldUserValue.FromUser() optimistically with ExceptionHandlingScope for server-side try-catch logic. Impact: 75-85% reduction in API calls (90,000 → …

The Problem: When Parallel Programming Backfires If you’ve ever optimized your C# API calls with parallel programming, you might know this story. Your client wants faster performance. You run multiple API requests in parallel. Locally, everything flies — especially late at night when traffic is low. …