Topics

This page is a guide to the main topics covered on Henry's Notes on the JVM.

Most articles focus on modern backend development on the JVM, with an emphasis on practical techniques, production-ready code, and understanding the trade-offs behind different approaches.

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Kotlin

Kotlin is my primary development language and the topic you'll see most often on this blog.

Topics include:

• Coroutines
• Flow
• Structured Concurrency
• Spring Boot
• Ktor
• Gradle
• Multiplatform
• Performance
• Best practices

➡️ Explore:

• Kotlin Articles

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Java

Although Kotlin is my preferred language, Java remains a core part of the JVM ecosystem.

You'll find articles covering:

• Modern Java
• Virtual Threads
• Project Loom
• Language features
• Performance
• JVM internals

➡️ Explore:

• Java Articles

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Spring Boot

Building production backend applications with Spring Boot.

Topics include:

• REST APIs
• Configuration
• Dependency Injection
• Spring AI
• Testing
• Security
• Data access
• Production tips

➡️ Explore:

• Spring Boot Articles

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Concurrency

Modern concurrent programming on the JVM.

Topics include:

• Coroutines
• Virtual Threads
• Structured Concurrency
• Fan-In
• Fan-Out
• Pipelines
• Cancellation
• Parallelism

➡️ Explore:

• Concurrency Articles

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Artificial Intelligence

Exploring AI from a JVM developer's perspective.

Topics include:

• Spring AI
• Apple Foundation Models
• OpenAI
• Local AI
• MCP
• AI-powered developer tools

➡️ Explore:

• AI Articles

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Software Architecture

Designing maintainable, scalable backend systems.

Topics include:

• Clean Architecture
• Design patterns
• Messaging
• Integration
• Distributed systems
• Reliability

➡️ Explore:

• Architecture Articles

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Gradle & Build Tools

Everything related to building JVM applications.

Topics include:

• Gradle
• Maven
• Dependency management
• Build optimisation
• Version Catalogs

➡️ Explore:

• Gradle Articles

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Docker & Deployment

Running applications in production.

Topics include:

• Docker
• Cloud Run
• App Engine
• Kubernetes
• CI/CD
• Deployment strategies

➡️ Explore:

• Docker Articles

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Testing

Writing reliable software through effective testing.

Topics include:

• Unit testing
• Integration testing
• Testcontainers
• MockMvc
• Performance testing

➡️ Explore:

➡️ /tag/testing

• Testing Articles

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Thanks for reading, and I hope you find something useful!