Horie Yugo
ソフトウェアエンジニア at さくらインターネット（株）
Kanagawa Prefecture, Japan
Summary
🤩
Rockstar🎓
Top SchoolHorie Yugo is a software engineer with around a decade of experience building high-performance backend systems, currently working at さくらインターネット after leading CDN and ERP-related engineering at JOCDN/IIJ and freee. He specializes in HTTP servers, CDN technologies, and microservice architectures—particularly authentication/authorization stacks and proxy integrations (Nginx, Envoy)—and is actively experimenting with modern transport techniques like HTTP/2/3, WebRTC and P2P to accelerate content delivery. His open-source contributions to prominent projects such as h2o, Caddy, nginx modules and Mercari’s Gaurun reflect deep systems-level expertise in server internals, caching, and secure push notification handling. Comfortable across C, Go, Java and scripting languages, he pairs production-grade service maintenance with iterative protocol-level research and patches. Notably, he has submitted practical fixes to mainstream servers (e.g., upstream header and cache behaviors) and enabled builds for diverse environments, demonstrating attention to real-world interoperability and deployability.
10 years of coding experience
14 years of employment as a software developer
Master of Engineering - MEng, Electrical Engineering and Computer Science, Master of Engineering - MEng, Electrical Engineering and Computer Science at 芝浦工業大学
Github Skills (52)
apn10
kubernetes10
debug10
docker10
reverse-proxy10
caddyfile10
testing10
http10
c1110
go-testing10
apple-push-notifications10
push-notifications10
dockers10
c1710
go10
Programming languages (10)
Github contributions (5)
vozlt/nginx-module-vts
Aug 2021 - Jan 2023
Nginx virtual host traffic status module
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 17 reviews, 22 commits in 1 year 4 months
Contributions summary:Horie primarily contributed to bug fixes within the Nginx module, addressing syntax errors, incorrect variable usage, and shared memory access issues. Their work focused on the core functionality of the module, including JSON display generation, upstream server handling, and shared memory management. The commits also included changes to module versioning and upstream state handling. Overall, the user's contributions centered on improving the module's stability and correcting existing defects.
nginxvozlt-nginx-modulesnginx-modulehoststatus
caddyserver/caddy
Oct 2021 - Jan 2023
Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 reviews, 9 commits, 16 PRs in 1 year 3 months
Contributions summary:Horie contributed primarily to the back-end aspects of the Caddy web server project. Their work involved fixing compression issues within the file server module, expanding placeholder functionality for index files, and addressing a hanging problem with chunked transfer encoding in the reverse proxy. They also fixed an issue related to environment variable replacement within the Caddyfile and added functionality for the reverse proxy, adding a flag to disable redirects. The user also contributed code to improve the basic authentication feature, as well as fixing an issue where reverse proxy metrics could not be reinitialized.
reverse-proxymulti-platformhttp-servertlsextensible
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