Spring Modulith in Practice: From Code to Living Architecture Diagrams
Spring Modulith can generate C4 component diagrams and module documentation from your actual code. Wire it into CI, publish to GitHub Pages, and your architecture docs are always in sync — no manual drawing required.
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Spring Modulith in Practice: Enforcing Architecture in a Growing Monolith
Spring Modulith turns module boundaries from hallway agreements into build failures. Here's how to use named interfaces, gradual enforcement, and modularity tests to keep a modular monolith maintainable — and why it matters even more in the age of AI-assisted coding.
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Mise vs SDKMAN: Why I'm Switching After Years of .sdkmanrc
SDKMAN has been my go-to JDK version manager for years. Mise does everything SDKMAN does — plus Node, Python, Terraform, and 500 other tools — with one config file and near-zero overhead. Here's why I'm switching.
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DGS at Scale: Testing, Schema Evolution, and Federation
Part 5 of the Production GraphQL series — unit testing DGS components with Spock, evolving your GraphQL schema without breaking clients, and federating multiple services into a unified graph.
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Virtual Threads Did Not Kill WebFlux
Java 21 virtual threads solve thread scalability for blocking code. WebFlux solves backpressure, streaming, and event-driven composition. They are not competitors — they solve different problems, and the 'WebFlux is dead' take is dangerously wrong.
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Securing Your GraphQL API with Netflix DGS
Part 3 of the Production GraphQL series — authentication and authorization with @PreAuthorize, error sanitization to prevent information leakage, and query depth and complexity limits to stop abuse.
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Testing Axon 5 Aggregates with Spock: A Practical Guide
How to test Axon 5 aggregate state machines using Spock and AxonTestFixture — from creation commands to guard clause rejections, with practical patterns for event chaining, timestamp handling, and injected services.
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Solving N+1 with Data Loaders and Field Resolvers
Part 2 of the Production GraphQL series — how DGS data loaders batch database calls to eliminate the N+1 problem, when to use MappedBatchLoader vs BatchLoader, and pagination patterns for GraphQL APIs.
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Schema-First GraphQL with Netflix DGS
Part 1 of the Production GraphQL series — how Netflix DGS and Spring for GraphQL merged into one stack, schema-first development patterns, code generation, and the three-layer type system that keeps your API maintainable.
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The Silent Metadata Gap: Why Your Axon 5 Events Have No User Attribution
Command metadata doesn't automatically propagate to events in Axon Framework 5. Here's how CorrelationDataProvider fixes the silent data loss — and why it's so hard to catch.
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Your MCP Server Works Locally. Then Kubernetes Kills the Session.
How we debugged intermittent 'Session not found' errors in a Spring AI MCP server on GKE — and why switching to stateless transport is the right answer for Kubernetes deployments.
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Propagating User Identity in Axon 5 Query Handlers
Why ReactiveSecurityContextHolder is always empty inside Axon query handlers, three approaches we considered, and the Axon MetaData solution that keeps query objects clean.
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Migrating from Axon Framework 4 to 5: What We Learned
A hands-on account of migrating a CQRS/ES application from Axon Framework 4.12 to 5.0 — the API upheaval, replacing sagas with stateful event handlers, and the reactive payoff.
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