https://wid-blog.github.io/en/tags/java/Recent content in Java on wid's blogHugoenSun, 31 Mar 2024 00:00:00 +0000https://wid-blog.github.io/en/posts/career/personal/chat-services-retrospective/Sun, 31 Mar 2024 00:00:00 +0000https://wid-blog.github.io/en/posts/career/personal/chat-services-retrospective/A record of designing and building a chat system as a personal project to gain hands-on experience with Kafka and Hexagonal Architecture.https://wid-blog.github.io/en/posts/tech/language/spring-webflux-reactive-stack/Mon, 25 Mar 2024 00:00:00 +0000https://wid-blog.github.io/en/posts/tech/language/spring-webflux-reactive-stack/Spring MVC assigns one thread per request. When I/O waits pile up, threads sit idle. WebFlux replaces this with an event loop-based non-blocking model. A summary of the structural differences from MVC, the Reactor pattern, and when to choose which.https://wid-blog.github.io/en/posts/career/hackathon/kric-station-public-data-hackathon/Fri, 31 Jul 2020 00:00:00 +0000https://wid-blog.github.io/en/posts/career/hackathon/kric-station-public-data-hackathon/Korea Railroad Industry Information Center’s public-data hackathon. A three-person team built an Android app that surfaces hidden rest spaces inside subway stations, over three weeks.