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ThenInclude', and we won't need the LEFT JOIN there. The orderings are necessary in order for EF Core to properly load the entity graph. We've ...

1 I have an EFCore query with takes > 80 seconds. I read on the internet that using "Include" massively in a single query is a bad idea, because EFCore creates a very complex …

How to improve performance of an EF Core query which uses several Includes. public IQueryable<User> GetByIdAsync (Guid userId) { return MyContext .Users //Bunch of …

In my CRM on one of my largest queries I started off by using Include and ThenInclude which resulted in my query pulling back almost a Gigabyte ...

EF Core makes it very easy to query out entity instances, and then use those instances in code. However, querying entity instances can frequently pull back more data than …

query.Include (q => q.MyInclude).Load (); This once again significantly improved performance, although a few more DB calls (one for each batch of includes) it was quicker than …

How to Improve Entity Framework Include Performance? Entity Framework does a great job to generate SQL. However, they are often very far to be optimized. using ( var ctx = new CustomerContext ()) { var customers = ctx.Customers .Include (x => x.Orders.Select (y => y.Items.Select (z => z.Product)) .Include (x => x.Payments.Select (y => y.Items) .Include (x => x.Shippings.Select (y => y.Items) .ToList (); }

Feb 23, 2021 · This is a companion article to the EF Core Community Standup called “ Performance tuning an EF Core app ” where I apply a series of performance enhancements to a demo ASP.NET Core e-commerce book selling site called the Book App. I start with 700 books, then 100,000 books and finally ½ million books.

Entity Framework performance of include Answer SPLIT the LINQ query in multiple queries USE EF+ Query IncludeOptimized ( Recommended) SPLIT the LINQ query into multiple queries You …

In EF 6 you can do .Include (v => v.VideoMetas.Select (vm => vm.Instances) which is a bit faster (I guess, haven't looked at SQL Profiler and actual query tbh). How can I …

Oct 20, 2016 · It is significantly better. The batched code takes 8~ seconds and your code is 5~ seconds. Predominantly there is one include which is significantly slow: batched: 3.3 seconds, your example: 2.5 seconds. That's a massive improvement, if I could just get the eager loading working, this would be a definite solution.

So it is not true that EF Core does Select and SelectMany in the backgruond. In my case we had a single entity with loads of navigation ...

Benchmarking with EF Core. This section discusses ways for detecting performance issues in your EF application, and once a problematic area has been identified, how …

When using Include(), you get the benefit of loading all of your data in a single call to the underlying data store. If this is a remote SQL Server, for example, that can be a major …

First level of performance tuning – Good LINQ · Don't load data you don't need, e.g. Use Select method pick out what is needed. · Don't Include ...

Database performance is a vast and complex topic, spanning an entire stack of components: the database, networking, the database driver, and data access layers such as EF …

Support me on Patreon to access the source code:https://www.patreon.com/milanjovanovicIn this video, I'm going to be solving an EF Core ...

Model configuration for auto-including navigations Note This feature was introduced in EF Core 6.0. You can configure a navigation in the model to be included every time …

As a general rule, there isn't any special EF knowledge to using indexes or diagnosing performance issues related to them; general database ...

However, instead of to make one big query like Query Include Filter, the queries are split into several queries to optimize the performance like EF Core ...

Jan 12, 2023 · EF tracks entity instances by default, so that changes on them are detected and persisted when SaveChanges is called. Another effect of tracking queries is that EF detects if an instance has already been loaded for your data, and will automatically return that tracked instance rather than returning a new one; this is called identity resolution. From a performance perspective, change tracking means the following:

Support me on Patreon to access the source code:https://www.patreon.com/milanjovanovicIn this video, I'll show you how to improve EF Core ...

Jan 11, 2016 · Each Include also increases query complexity, so the database's query optimizer will have to make increasingly more effort to find the best query plan. At some point this may no longer succeed. Also, when some vital indexes are missing (esp. on foreign keys) performance may suffer by adding Includes, even with the best query plan. Entity Framework core

Identify Bottlenecks and Measure, Measure, Measure

There are two things in the code above which should be noticed. First of all, we don't need a Include call anymore since Entity Framework “ ...