#kotlin

2 posts filed under this tag.

May 5, 2026Engineering

Event-Log-as-Source-of-Truth Turns Schema Evolution Into a Forever Problem

When the log is the source of truth, every schema change is permanent. A Kotlin/Avro walkthrough of the rename that passed the Schema Registry check and silently corrupted every old event, plus the Protobuf and Avro invariants I now keep pinned above my desk.

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Apr 22, 2026AI

JetBrains Tracy: Pragmatic AI Observability for Kotlin

JetBrains Tracy is a Kotlin library that wires LLM-aware tracing into your app on top of OpenTelemetry. This post walks through how I integrated it in a Spring Boot service, the design decisions that matter, and the failure modes teams hit once LLM calls become the hottest path in their system.

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