Tutorials ADO.NET Core Tutorial
High-Performance Order System — Complete Guide
High-Performance Order System — 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 99 of 100
High-Performance Order System
Foundations ✓ → SQL & safety ✓ → Production ✓ → Projects
Projects · 4 — Portfolio builds · ~10 min · Module 10: Real-World Enterprise Projects
What is this?
High-performance orders use pooled connections, async procs, TVP/bulk lines, and minimal round trips.
Why should you care?
ShopNest peak checkout is the final stress of this track.
See it live — copy this example
Use a .NET console or API project with SQL Server LocalDB. Run dotnet run after pasting.
await using var conn = new SqlConnection(cs);
await conn.OpenAsync(ct);
await using var cmd = new SqlCommand("usp_Orders_PlaceGraph", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("@Lines", SqlDbType.Structured) { TypeName = "dbo.OrderLineTvp", Value = tvp });
await cmd.ExecuteNonQueryAsync(ct);What happened?
- One proc for header+lines.
- Async.
- Pooling.
- Measure p95.
Practice next
- TVP lines.
- PlaceGraph proc.
- Load test.
- Retry 1205.
- Outbox in same tx.
Remember
Single proc graph. Async+pool. Measure p95.
ShopNest peak checkout
TVP place-order holds p95 under load.
Outcome: Flash sale survives.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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