Question: Is DbContext Thread Safe?

Is Entity Framework context thread safe?

3 Answers.

More that one thread operating on a single Entity Framework context is not thread safe.

A separate instance of context for each thread is thread-safe.

In your example, you may call that code from any number of threads concurrently and each will be happily working with its own context..

How do you consume scoped service from Singleton?

One way to do this is to:make your singleton service IDisposable ,inject IServiceProvider ,create and store an IServiceScope scope using the IServiceProvider. CreateScope() extension method,use that scope to create the the scoped service you need,dispose the service scope in the Dispose method.

What is a scoped service?

A scoped service can be thought of as an optimization where it is injected by too many services in a web request. Thus, all these services will use a single instance of the service during the same web request.

What is DbContext and DbSet in Entity Framework?

Intuitively, a DbContext corresponds to your database (or a collection of tables and views in your database) whereas a DbSet corresponds to a table or view in your database. So it makes perfect sense that you will get a combination of both!

Is DbContext managed?

DbContext implements IDisposable . Its instances should therefore be disposed of as soon as they’re not needed anymore. In practice however, and unless you choose to explicitly manage the database connection or transaction that the DbContext uses, not calling DbContext.

Should DbContext be Singleton?

Singleton-scope is a very bad idea for your context. … Assuming that the entities you’re utilizing all originate from the same context type, and that you’re properly injecting the context everywhere it’s needed, there should never be multiple context instances in play.

Should you dispose DbContext?

Don’t dispose DbContext objects. Although the DbContext implements IDisposable , you shouldn’t manually dispose it, nor should you wrap it in a using statement. DbContext manages its own lifetime; when your data access request is completed, DbContext will automatically close the database connection for you.

What is the difference between transient and scoped?

Transient: In transient, new object instances will be injected in a single request and response. … Scoped: In scoped, the same object instance will be injected in a single request and response. Singleton: In singleton, the same object will be injected across all requests and responses.

Should DbContext be scoped or transient?

If you use transient lifetime on the other side, you will lose the “transaction” functionality. With scoped, the DbContext has a transaction scope that’s as long as the request. If you need more fine-grained control, you have to use the Unit of Work pattern (which DbContext already kind of utilize).

Why is DbContext scoped?

It also allows you to use a single context in a certain scope, which has clear advantages, such as running code in a single business transaction, and being able to pass around entities, since they originate from the same DbContext .