Tutorials ADO.NET Core Tutorial
Batch Processing — Complete Guide
Batch Processing — 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 47 of 100
Batch Processing
Foundations ✓ → SQL & safety → Production → Projects
SQL & safety · 2 — Procs, tx, performance · ~6 min · Module 5: Performance Optimization
What is this?
Batch processing chunks large work (TOP N loops, TVPs) with short transactions per chunk.
Why should you care?
ShopNest nightly repricer cannot update 5M rows in one transaction.
See it live — copy this example
Use a .NET console or API project with SQL Server LocalDB. Run dotnet run after pasting.
cmd.CommandText = @"
UPDATE TOP (1000) Products SET Price = Price * 1.01
WHERE NeedsReprice = 1;
SELECT @@ROWCOUNT;";
int n;
do { n = (int)(await cmd.ExecuteScalarAsync(ct))!; }
while (n > 0);What happened?
- Chunk updates.
- Commit often.
- Progress logs.
- Avoid one giant lock.
Practice next
- Loop TOP 1000 updates.
- Log chunks.
- Stop when 0.
- Chunk size 500.
- Add delay between chunks.
Remember
Chunk work. Short locks. Progress logs.
ShopNest reprice batches
Night job updates in chunks.
Outcome: OLTP stays responsive.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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