Memory-Optimized Tables


This documentation is for EF Core. For EF6.x, see Entity Framework 6.

Memory-Optimized Tables are a feature of SQL Server where the entire table resides in memory. A second copy of the table data is maintained on disk, but only for durability purposes. Data in memory-optimized tables is only read from disk during database recovery. For example, after a server restart.


Memory-Optimized Table support was introduced in EF Core 1.1.0. If you are using an earlier release, the functionality shown in this article will not be available.

Configuring a memory-optimized table

You can specify that the table an entity is mapped to is memory-optimized. When using EF Core to create and maintain a database based on your model (either with migrations or Database.EnsureCreated()), a memory-optimized table will be created for these entities.

protected override void OnModelCreating(ModelBuilder modelBuilder)