Improving Microservice Performance with gRPC

Microservices are a great pattern to follow for complex applications, but all those REST endpoints decrease performance. One way to improve that is with gRPC. This presentation gives a brief overview then drills into how to implement it in .NET.

Transcript

1. Improving Microservice Performance with gRPC Craig Berntson
2. Thanks to our Sponsors! Premier Marquee Wifi: Network: lhm_conf Password: lhmiller
3. Who am I? • Enterprise Architect • Defrocked Microsoft MVP (23 years) • Conference speaker across North America and Europe • Former columnist .Net Curry magazine • Co-author Continuous Integration in .Net
4. Today’s Topics • What is gRPC and why you should use it • Protocol buffers • gRPC servers and clients in .Net 6 • Testing servers • Code-first gRPC in .Net 6
6. Process Decode Encode Encode Browser Web Server Microservice Process Decode Process Decode Encode Decode Request Response Microservice Process Decode Encode Microservice Process Decode Encode Encode Process Decode
7. Percent of CPU usage that is encoding/decoding
9. Process Decode Encode Browser Web Server Microservice Process Process Encode Decode Request Response Microservice Process Microservice Process Process
10. gRPC • Originated at Google as the next-gen of Stubby • Supports TLS (https) and token-based authentication • Can do one-way, two-way, streaming • Uses Protocol Buffers to encode data • Supported in C#, C++, Dart, Go, Java, Kotlin, Node, Objective-C, PHP, Python, Ruby • gRPC-Web (not officially supported) • Adopted by Google, Uber, Square, Netflix, IBM, Docker, Cisco, Spotify, Dropbox, Microsoft, and many others
11. gRPC in .Net 6 • Client-side load balancing • Transient fault handling with retries • Performance improvements
12. “Given the impressive performance benefits of moving to .NET Core, our North Star goal is to migrate all Substrate processes to .NET Core and to move all internal microservices to use gRPC for communication.” https://devblogs.microsoft.com/dotnet/exchange-online-journey-to-net-core/
13. Using gRPC in C# Server 1.Create contract 2.Create server 3.Compile Client 1.Consume contract 2.Create calling code 3.Compile
14. Protocol Buffers syntax = "proto3"; option csharp_namespace = “MovieCatalog_v1”; service MovieCatalog { rpc SaveNewMovie (MovieItem) returns (AddMovieResponse) {} rpc FetchExistingMovie (FetchMovieRequest) returns (MovieItem) {} } message MovieItem { string name = 1; double price = 2; bool inStock = 3; } message AddMovieResponse { bool wasSaved = 1; int32 itemId = 2; } message FetchMovieRequest { string name = 1; }
15. Demo Creating your first gRPC server
16. Issues with the .proto file approach • Uses unmanaged code • Difficulty sharing .proto files • Unfamiliar process/syntax to .Net developers • Code generation at compile time
17. Code First • Community created • Supported by Microsoft • No .proto files -- .Net only • Uses WCF-like syntax • 100% Managed Code
18. Demo gRPC with Code First Cartoonalogue • gRPC Code First • CQRS • Saga Pattern
19. Cartoon Domain Studio Domain Cartoonalogue.API CartoonDomain. Shared. Commands CartoonDomain. Shared.Queries CartoonDomain. Command. Service CartoonDomain. Common CartoonDomain. Query. Service Cartoon StudioDomain. Shared. Commands StudioDomain. Shared.Queries StudioDomain. Command. Service StudioDomain. Common StudioDomain. Query. Service Studio Contracts Entities
20. The Biggest Issue with gRPC Services are tightly coupled
21. Today’s Topics • What is gRPC and why you should use it • Protocol buffers • gRPC servers and clients in .Net 6 • Code-first gRPC in .Net 6
22. github.com/craigber/gRPCSaga speakerdeck.com/craigber