How to implement unit of work with EF Core?

Short answer: public interface IUnitOfWork : IDisposable { IRepository<Customer> Customers { get; } IRepository<Order> Orders { get; } Task<int> CommitAsync(); } Implementation typically injects a single DbContext instance shared across repositories. CommitAsync() calls DbContext.SaveChangesAsync().

Example code

public interface IUnitOfWork : IDisposable
{ IRepository<Customer> Customers { get; } IRepository<Order> Orders { get; } Task<int> CommitAsync(); } Implementation typically injects a single DbContext instance shared across repositories. CommitAsync() calls DbContext.SaveChangesAsync().

Real-world example (ShopNest)

ShopNest’s order service uses EF Core to save an Order and its line items in one SaveChangesAsync() call inside a transaction.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.