Vinayak's Blog

Sharing what I learn, build, and explore
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BPE Tokenizer Simulator
Oct 8, 2026 · 1 min read

Train a byte-pair encoding tokenizer one merge at a time, then use the learned vocabulary to encode and decode text. The simulator runs …
Making spring boot integration tests fast
Sep 26, 2026 · 8 min read

A Spring Boot service with Kafka and MongoDB integration tests (Testcontainers) took 3m14s to run. Removing @DirtiesContext had been …
A Rolling Update, an Autoscaler, and a Missing Environment Variable: Anatomy of a Production Outage
Aug 20, 2026 · 13 min read

Rolling updates are supposed to be the safe way to ship. Kubernetes brings up new pods, waits for them to become healthy, and only then …
Why 2.5 MB Mongo Document Became a 5.3 MB Kafka Message in Debezium
Jul 24, 2026 · 5 min read

Here is what we were running when we hit this: Debezium 2.7.4.Final Debezium MongoDB connector, with the MongoEventRouter outbox SMT …
The AWS S3 client fix that caused a new bug
Jul 8, 2026 · 7 min read

I recently chased down a slow memory leak in a Java service. The fix was simple and it worked. But it also uncovered a second problem …
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