Tutorials ADO.NET Core Tutorial
Memory Optimization — Complete Guide
Memory Optimization — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of ADO.NET Core Tutorial on Toolliyo Academy.
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ADO.NET Core Tutorial · Lesson 49 of 100
Memory Optimization
Foundations ✓ → SQL & safety → Production → Projects
SQL & safety · 2 — Procs, tx, performance · ~6 min · Module 5: Performance Optimization
What is this?
Memory optimization means streaming, pooling, avoiding huge DataTables, and releasing readers promptly.
Why should you care?
ShopNest pods OOM when someone ToLists a report.
See it live — copy this example
Use a .NET console or API project with SQL Server LocalDB. Run dotnet run after pasting.
// prefer
await foreach (var row in StreamAsync(ct)) { /* write */ }
// avoid
var all = await LoadAllOrdersAsync(ct); // huge ListWhat happened?
- Stream.
- Don’t cache DataSets globally.
- Dispose.
- Bound page sizes.
Practice next
- Find a ToList on big query.
- Replace with stream.
- Cap Take.
- ArrayPool for byte buffers when reading blobs.
- GC.Collect only in labs.
Remember
Stream > buffer. Dispose readers. Cap pages.
ShopNest OOM fix
Export switched to streaming.
Outcome: Pod memory stable.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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