Replacing Axon Sagas with Stateful Event Handlers: What We Built Instead
Why we replaced Axon sagas — and DeadlineManager — with a Postgres-backed JobStateService, a Spring @Scheduled sweeper, and Temporal for the workflow-shaped work, plus the production gotcha we hit on the way.
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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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How We Use Claude Code Skills to Codify Our Development Patterns
A practical guide to teaching your AI coding assistant your codebase conventions using Claude Code Skills — reusable Markdown templates that prevent repeated code review corrections.
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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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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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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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