Yes, you can use it that way. Since Dapper is just working on extension methods, you can use it for the performance-sensitive areas of your code. And you can continue to use EF for other areas of your code.

Is it safe to use Dapper?

The Dapper Smart Contract itself is fully audited and final: this means you can safely use Dapper to store your most prized possessions. If you're interested, you can check out the public security report by Sigma Prime here.

Is Dapper still used?

Summary. In short, and as expected, Dapper is still faster than EF Core, at least for these kinds of queries. This merely confirms what the developer community has long suspected: that in terms of raw performance, Dapper is still king of the ORM jungle.