Writing mapping method is machine job. Do not waste your time, let Mapster do it.

Benchmark 

Entity Framework Core 2.0 vs. Dapper performance benchmark, querying SQL Azure tables 

Stopwatch under the hood 

instafetch fetches media from Instagram based on (and only on) the user and/or tag, relying on the Instagram API.

If you use the Instagram API to make a call, you will only get 33 results back, no matter what you specify in the count paramter. Instafetch will help you fetch more media than the limit imposes, in exchange for more API calls, which can count against your hourly limit.  Demo

• Entity Framework 7 RC1 (which we used here), is slow, but later builds are faster. It’s still not going to top any chart, but it’s currently faster than EF6, according to tests with a local build. We’ll update the benchmark with results from RC2 when it’s released.