𝗨𝘀𝗲 𝗔𝘀𝗡𝗼𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴() 𝗳𝗼𝗿 𝗥𝗲𝗮𝗱-𝗢𝗻𝗹𝘆 𝗤𝘂𝗲𝗿𝗶𝗲𝘀 𝗶𝗻 𝗘𝗙 𝗖𝗼𝗿𝗲

 𝗨𝘀𝗲 𝗔𝘀𝗡𝗼𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴() 𝗳𝗼𝗿 𝗥𝗲𝗮𝗱-𝗢𝗻𝗹𝘆 𝗤𝘂𝗲𝗿𝗶𝗲𝘀 𝗶𝗻 𝗘𝗙 𝗖𝗼𝗿𝗲

By default, EF Core tracks all queried entities, even when you don’t intend to modify them.

That’s unnecessary overhead in common read-only scenarios like:

 • Displaying data

 • Listing records in APIs

 • Generating reports or exports

𝗪𝗵𝘆 𝗶𝘁 𝗺𝗮𝘁𝘁𝗲𝗿𝘀:

- Faster query performance

- Lower memory usage

- No change tracking = no accidental updates

𝗘𝘅𝗮𝗺𝗽𝗹𝗲

var orders = await context.Orders

  .AsNoTracking()

  .Include(o => o.Customer)

  .ToListAsync()

You’ll notice improved speed and reduced memory footprint, especially with large datasets.

𝗪𝗵𝗲𝗻 𝘁𝗼 𝗨𝘀𝗲 𝗔𝘀𝗡𝗼𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴()

 • Use it for any query where you don’t plan to modify the returned entities, such as:

 • Read-only API endpoints

 • Reports, exports, dashboards

 • Background jobs doing data reads

 • Large data retrieval operations

 • Projections into DTOs (e.g., using .Select(...))

𝗪𝗵𝗲𝗻 𝗡𝗼𝘁 𝘁𝗼 𝗨𝘀𝗲 𝗔𝘀𝗡𝗼𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴()

 • Avoid it when you intend to update the entities, including:

 • Editing or saving changes to the queried entities

 • Loading related data that you plan to modify

 • Using change tracking features like:

   - Automatic fix-up

   - DetectChanges()

   - Change detection during SaveChanges

 • Stateful workflows requiring tracked entities