Yoshifumi Kawai

Aug 3

Patterns & Practices for efficiently handling C# async/await cancel processing and timeouts

One important use of async/await is proper cancellation processing. Create a CancellationTokenSource, pass a CancellationToken, and handle OperationCanceledException. All this, however, faces some difficulties to implement efficiently. Based on a pattern I faced when implementing a high-speed network client called AlterNats, I will show how to write a process for…

Csharp

5 min read

Jun 21

AlterNats — High Performance .NET PubSub Client and How implement of optimized socket programming in .NET 6

Last month, I’ve released new .NET PubSub library for NATS — Cloud Native, Open Source, High-performance Messaging System. GitHub - Cysharp/AlterNats: An alternative high performance NATS client for .NET. An alternative high performance NATS client for .NET. Zero Allocation and Zero Copy Architecture to achive x2~4…github.com AlterNats is more than three times faster than the official existing clients and five times faster than PubSub on StackExchange.Redis, and all the usual PubSub methods are zero-allocation.

Csharp

7 min read

Mar 16

DFrame — Distributed load testing framework for writing test scenarios in C#

I’ve released a new library called DFrame. https://github.com/Cysharp/DFrame/ DFrame.Controller, which is the real-time web UI, and DFrame.Worker, which writes the load test scenario in C#. Deploying DFrame.Worker in a cluster on the web, with one to thousands of workers working to generate a large number of requests. The ability to…

Csharp

6 min read

DFrame — Distributed load testing framework for writing test scenarios in C#

Dec 29, 2021

Minimal API for CommandLine tool by ConsoleAppFramework v4

Minimal API in ASP .NET Core 6 is a one of great feature of .NET 6. This API, which takes full advantage of the power of C# 10.0, has made it very easy to create WebApplications while maintaining a high level of extensibility. However, parsing with System.CommandLine …

Csharp

2 min read

Minimal API for CommandLine tool by ConsoleAppFramework v4

Dec 23, 2021

NativeMemoryArray — A library that takes full advantage of the .NET 6 API to handle huge data of over 2GB

There is one major limitation in C# when dealing with arrays, especially byte[]. The upper limit of a one-dimensional array is 0x7FFFFFC7 (2,147,483,591), which is a bit smaller than int.MaxValue. This limitation is different with .NET 6 and other target frameworks. We will discuss it in detail later. This value…

Csharp

4 min read

Aug 22, 2021

Writing shell script in C# like google/zx via ProcessX

google/zx provides wonrderful solution to write shell script, it keeps the simple writing experience of shell, however fully experience of JavaScript and async/await. I wanted to reproduce it in C#. …

Csharp

2 min read

Writing shell script in C# like google/zx via ProcessX

Jun 3, 2021

MessagePipe — High performance messaging library for .NET and Unity

Last month, I’ve released a new library called MessagePipe. GitHub — Cysharp/MessagePipe It mainly supports Publish/Subscribe patterns in in-memory, and covers all cases with a unified interface. For example, it supports communication between different hubs in MagicOnion and SignalR for real-time communication, messenger pattern for loosely coupling between V-VM in…

Csharp

6 min read

MessagePipe — High performance messaging library for .NET and Unity

Nov 17, 2020

MagicOnion v4 — .NET 5 and ASP .NET Core gRPC with Code-First Contracts

We released MagicOnion v4 from Cysharp last week. https://github.com/Cysharp/MagicOnion/ MagicOnion has been built on the design principles of C# as Schema, Code-First Contracts for four years, immediately following the release of gRPC 1.0. Until now, we have been using gRPC C Core from Google, and now we are using the…

Csharp

4 min read

MagicOnion v4 — .NET 5 and ASP .NET Core gRPC with Code-First Contracts

Nov 8, 2020

Introducing Cysharp

I’m based in Japan, and the company I founded, Cysharp, is not as well known in besides Japan. However, you may know the OSS I’m making, as several of them have received many stars on GitHub as well. .NET people will know of my work in high-performance serializers such as…

Game

6 min read

Oct 26, 2020

ProcessX — Simplify call an external process with the async streams in C# 8.0.

The only way to handle external processes in C# is with the Process class, but this API is very old, and asynchronous support would require a lot of flag and boilerplate code. So I created a library that “just throws a line of string like writing a shell,” “receives the…

Csharp

2 min read