Notes from building backend systems: what I designed, what broke, and the reasoning I wish I had written down the first time.
Topics
Not tutorials. Working notes: what I tried, what it cost, and what I would tell myself before starting.
Agents, LLMs, RAG and AI architecture — what I build, test and break.
Distributed systems, databases, messaging, caching and scaling.
Working references from Java, Spring, PostgreSQL, Kafka, Redis and Kubernetes.
Full write-ups from problem to trade-offs, with the diagrams to match.
Latest
Newest first. Some are finished thoughts, others are still moving.
Every week the same few volunteers spent two hours or more chasing sermon slides, copying Bible verses and fixing line breaks. So I built them an agent that does it on Thursday evening, for about seven cents, and still lets a person say no.
Next
I am always up for a conversation about architecture, trade-offs, or a bug that refuses to die.
Start a conversation