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# Flight Asp Server Example
This example flight service stores uploaded Arrow tables in memory.
## How this was created
First, create a new gRPC service (Flight is based on gRPC):
```
dotnet new grpc
```
Delete the example greeter service.
Then, implement a concrete subclass of [`FlightServer`](../../src/Apache.Arrow.Flight/Server/FlightServer.cs).
See [./Services/InMemoryFlightServer.cs](./Services/InMemoryFlightServer.cs).
Finally, in [./Program.cs](./Program.cs) add the Flight server to the gRPC services and
map the endpoints with the extension methods:
```csharp
grpcBuilder.AddFlightServer<InMemoryFlightServer>();
...
app.MapFlightEndpoint();
```