data access
Entity Framework Core Articles, Tutorials & News
Entity Framework Core articles, tutorials, and news from the DotNetNews archive.
556 articles Updated
This DotNetNews topic collects Entity Framework Core tutorials material from the daily archive. Entity Framework Core is part of the data-access layer most .NET apps rely on, whether the store is relational or document-oriented. The page is for people who already ship C# and need a faster way to find relevant posts.
Expect publisher tutorials, release notes, architecture write-ups, and field notes linked from DotNetNews issues. Start here is a short editorial shortlist for Entity Framework Core; the archive list is chronological and larger. Nothing here claims every article was production-tested by the editors.
Recurring subtopics in recent issues include EF Core tutorials, EF Core migrations, EF Core performance, and LINQ EF Core. Secondary angles such as Entity Framework Core and EF Core tutorials appear when the archive actually covered them. Related hubs such as Dapper for C# and .NET and SQL Server for C# and .NET cover adjacent problems.
Start here
Editor picks for EF Core
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The Migration That Lied for Two Years
Medium Issue #504
Covers the Migration That Lied for Two Years.
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Fastest Way to Bulk Insert Thousands of Rows in EF Core
codewithmukesh Issue #502
Covers fastest Way to Bulk Insert Thousands of Rows in EF Core.
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Entity Framework Core Performance Tuning for Large Applications
C# Corner Issue #501
Optimize EF Core for large apps: Boost performance with AsNoTracking, pagination, indexing, caching, and more.
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EF Core Migration Bundles: What They Are & Why They Matter
Medium Issue #501
Migration bundles are still underused; this is a useful operational topic.
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The C# 14 field Keyword Looks Like Free Cleanup. It Can Still Break Your EF Core Mapping
C# Corner Issue #501
C# 14 field keyword can break EF Core backing-field mapping and reflection code.
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Track every EF Core record change with temporal tables
Round The Code Issue #499
Temporal tables remain one of the most useful underused SQL Server features, and this walks through the EF Core side clearly.
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Stop Over-Fetching: Master EF Core Projections for Faster, Leaner APIs
Medium Issue #498
If your APIs are slow, projections are one of the highest-value EF Core habits to build early.
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EF Core and Azure SQL Database: A Step-by-Step Guide
Dev Tips Issue #498
Practical guide for getting EF Core working cleanly against Azure SQL, including resiliency and passwordless access.
Archive
Page 1 of 23
Newest first
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Boosting ASP.NET Core Performance: A Guide to Read-Only EF Core Queries
Medium - Rakibul H. Rabbi Issue #558
When building ASP.NET Core applications, it’s common to have multiple database contexts. You might have one for your main application…
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C# 14 Quietly Broke Our EF Core Queries, and array.Contains() Was the Culprit
Medium - Owais Issue #555
Nobody touched the code. We changed , and a query that had worked for years started throwing an exception that named…
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The Real Cost of Returning the Identity Value in EF Core
Medium - Anton Martyniuk Issue #555
When you insert thousands of rows into SQL Server with Entity Framework Core, performance drops quickly. Continue reading on CodeX »
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Entity Framework Core in C#: What .NET Interviews Actually Ask
Medium - Anchalmehandiratta Issue #555
EF Core comes up in almost every .NET interview that touches a database, and one question dominates: the N+1 problem. This covers the…
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How EF Core Change Tracking Works
Medium - Martin Bernaola Mendez Issue #553
SaveChanges() isn't magic. EF Core keeps a snapshot of every tracked entity, compares it with the current values, and turns each entity's…
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What I Learned About EF Core by Building an Enterprise Inventory System
Medium - Bhaskar Soman Issue #553
When I started learning Entity Framework Core, I initially thought the main problem was understanding how to map C# classes to database…
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Making POST Requests Idempotent in .NET 8: Preventing Duplicate Requests in Distributed Systems
Medium - Adeboye Salisu Issue #552
A practical look at how I used idempotency keys, EF Core and PostgreSQL unique constraints in Taskora to make retries safe under…
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EF Core 10 Is Insane: The Features That Will Change How You Write Data Access Code
Medium - Santanu Chandra Issue #551
A practical tour of what’s new in Entity Framework Core 10, with real examples you can paste into your project.
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EF Core vs Dapper vs ADO.NET: Stop Picking Sides, Start Picking the Right Tool
Medium - Santanu Chandra Issue #550
Three ways to talk to SQL Server from .NET, what each one really costs you, and how to choose without starting a religious war in your…
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EF Core N+1 Query Problem: How to Detect, Measure, and Fix Excessive Database Queries
Medium Issue #549
Your EF Core application can return the correct data, pass every functional test, and still have a serious database performance problem.
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Entity Framework Core Performance: 10 Mistakes I Keep Seeing in Production Code
Medium Issue #547
Entity Framework Core makes database access feel deceptively simple. You write a LINQ query, call ToListAsync(), get your objects back and… Continue reading on CodeToDeploy »
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EF Core 10 Is INSANE — Overview of Game Changer features
Medium Issue #545
EF Core 10 ships first-class LeftJoin and RightJoin operators, named query filters you can disable individually, complex types mapped to…
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Let Postgres Enforce Tenant Isolation
Milan's .NET Weekly Issue #542
EF Core query filters can be bypassed. PostgreSQL row-level security enforces tenant isolation on reads and writes, if you connect with the right database role…
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Filtering EF Core by a Large List: The 2,100 Parameter Wall
codewithmukesh Issue #540
EF Core 10 changed how Contains sends a list to SQL Server. Here is the real parameter ceiling, what happens when you cross it, and benchmarks for every fix.
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AI agents, API security, concurrency bugs
DotNetNews Issue #537
Explore how coding agents hunt for context, secure ASP.NET Core APIs, manage settings with Options Pattern, and debug concurrency issues.
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EF Core navigation property returning null? Here's why
Round The Code Issue #536
Find out why your EF Core navigation property come back as null. Learn how Include() fixes it, when you need it, and the pitfalls to watch for.
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6 Ways to Speed Up Your .NET Web API
Medium Issue #535
Caching, async, pagination, compression, EF Core and pooling.
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.NET Data Community Standup: How to start contributing to Entity Framework Core
YouTube Issue #533
Learn how to start contributing to the Entity Framework Core project. Where to start. How to build the repository. How it is layered. How tests work. Etc. 🎙️ Featuring: Jiri Cincura #efcore #ef #dotn...
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PostgreSQL 19 Beta 3: Testing Temporal Tables with EF Core
C# Corner Issue #533
Learn how to test PostgreSQL 19 Beta 3 temporal tables with EF Core, including temporal queries, compatibility testing, and potential query behavior changes.
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Beware of ValueGeneratedOnAdd when using EF
Josef Ottosson Issue #531
How a self-generated GUID had EF marking my brand-new claims as Modified instead of Added, and the one line of config that fixed it.
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PostgreSQL 19 Beta 3: Testing Temporal Table Queries with EF Core
C# Corner Issue #531
Explore PostgreSQL 19 temporal table capabilities with EF Core and test temporal queries, historical data access, performance, and .NET integration.
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Querying and Performing Transactions Across Multiple Database Schemas in a Modular Monolith
Medium Issue #530
Building a Modular Monolith gives you clear boundaries between modules, but it also introduces a challenge: how do you query data that… Continue reading on CodeX »
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Your EF Core Query Looks Fine… Until It Runs 1,001 Queries
Medium Issue #530
The N+1 Query Problem in EF Core — What It Is, Why It Hurts, and How to Fix It
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PostgreSQL 19 Beta: Benchmarking JSONB Workloads from .NET APIs
C# Corner Issue #529
Benchmark PostgreSQL 19 Beta JSONB workloads from .NET APIs and evaluate query performance, indexing strategies, EF Core behavior, and database scalability.
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.NET 11 Preview 7: What’s New and Why Developers Should Explore It
C# Corner Issue #529
A simple and practical look at .NET 11 Preview 7, covering the latest features, performance improvements, ASP.NET Core updates, C# development, EF Core, cloud tools, and what developers should know be...