Henry Brown (@hbrown) | Hashnode Toggle Sidebar Feed Pro Search Theme Sign in MoreDarkshift - a dark factory for softwareBug0 - The AI-native e2e QA regression testingThe foreword by Hashnode - official blog from the Hashnode teamPassmark - The open-source AI framework for regression testingHashnode gql skill - let your AI agent publish to your Hashnode blogHackathonsChangelogBrand@hashnode on XHashnode on LinkedInSupport - [email protected] of ConductTermsPrivacySitemap Search Hashnode Search posts, tags, users, and pages @hbrown Henry Brown @hbrown·Cape Town, South Africa·Joined August 2026 Pragmatic Backend Engineering for the Modern JVM Share About JVM enthusiast working for Grapevine Interactive in beautiful Cape Town. Available for Nothing here yet. Henry Brown's blogs Henry Brown's Notes on the JVMblog.hbrown.dev7 posts About JVM enthusiast working for Grapevine Interactive in beautiful Cape Town. Available for Nothing here yet. Henry Brown's blogs Henry Brown's Notes on the JVMblog.hbrown.dev7 posts ArticlesComments Recently published HBHenry Browninblog.hbrown.dev·53m ago · 6 min read PgBouncer with Spring Boot 4: Setup, Gotchas, and the Proof Every Postgres connection is a process on the server. That's a deliberate design choice — it makes Postgres simple and robust — but it also means connections are expensive to open and there's a hard c 00 HBHenry Browninblog.hbrown.dev·57m ago · 9 min read I Built a Spring Boot 4 App to Put PgBouncer to the Test This post describes a small books-and-authors catalogue, but its real job is to be a testbed: it demonstrates what PgBouncer, a lightweight connection pool manager, actually buys you in front of Postg 00 HBHenry Browninblog.hbrown.dev·6d ago · 11 min read Guardrails for AI-Generated Kotlin with detekt and ktlint When we adopt agentic coding workflows, our job starts to shift from typing every line of code to defining the conditions that generated code must satisfy. An AI coding agent can produce a working imp 10 HBHenry Browninblog.hbrown.dev·Jul 22 · 6 min read Fan-in with Kotlin Coroutines and Flow Sometimes you need to start several pieces of work at the same time and handle each result as soon as it is available. The fan-in pattern is a good fit for this: many concurrent producers send their r 00 HBHenry Browninblog.hbrown.dev·Jul 9 · 6 min read Accessing Apple's on-device AI from Kotlin using apfel If you own a modern Mac with an Apple Silicon chip and Apple Intelligence enabled, then you already have access to a local foundation model. There is no separate model to download, no API key to creat 00 Load more