ASPNET gRPC Services — Building High-Performance RPC APIs in .NET
DodaTech
Updated 2026-06-28
1 min read
In this tutorial, you'll learn about ASPNET Grpc. We cover key concepts, practical examples, and best practices to help you understand and apply this topic effectively.
gRPC in ASP.NET Core enables high-performance, strongly-typed remote procedure calls using HTTP/2 and Protocol Buffers.
syntax = "proto3";
package scan.v1;
service ScanService {
rpc ScanFile (ScanRequest) returns (ScanResponse);
rpc MonitorScan (MonitorRequest) returns (stream ScanProgress);
}
message ScanRequest {
string file_id = 1;
string scan_type = 2;
}
public class ScanService : Scan.v1.ScanService.ScanServiceBase
{
public override async Task<ScanResponse> ScanFile(ScanRequest request, ServerCallContext context)
{
var result = await _scanner.ScanAsync(request.FileId, request.ScanType);
return new ScanResponse { Result = result.Status, Threats = { result.Threats } };
}
public override async Task MonitorScan(MonitorRequest request, IServerStreamWriter<ScanProgress> stream, ServerCallContext context)
{
await foreach (var progress in _scanner.StreamProgressAsync(request.FileId))
{
await stream.WriteAsync(new ScanProgress { Percentage = progress.Percentage, Message = progress.Message });
}
}
}
gRPC in .NET offers 5-10x performance improvements over REST for internal service communication.
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