Fix: src refspec main does not match any
Git rejects the push with “src refspec main does not match any”. Four causes: no commit yet, a different branch name, a typo, and nothing committed.
Blog
Practical software engineering guidance from Jeff Bailey on tools like jq, SSH, and Git, plus architecture diagrams, book summaries, and fundamentals.
How to Use jq With kubectl: Practical Recipes
Query Kubernetes with kubectl -o json and jq: find pods that aren’t running, containers without limits, images in use, restart counts, and node capacity.
jq vs yq: Which One Should You Use?
jq vs yq compared on YAML support, syntax, speed, and in-place edits, with tested examples and a pick for each job. They are complements, not rivals.
Structurizr vs Mermaid vs PlantUML for C4 Diagrams
Structurizr, Mermaid C4, and C4-PlantUML compared on the same model: layout quality, error checking, offline rendering, and how many views one source buys you.
Confusion as a Service - Deadly Cut 17
Confusion as a Service (CaaS) starts with the co-worker who floods every channel until nothing means anything. Here is how back pressure gets your sanity back.
Why Do I Need an Ontology?
An ontology gives developers and AI agents a shared, checkable model of the domain, with guardrails that catch error types and plain English mistakes.
How Do I Use Lima?
Use Lima to run Linux on your Mac: install with Homebrew, start an Ubuntu VM, share files, and run your first container with nerdctl.
Learn Mermaid
Learn Mermaid in 15 minutes: the flowchart and sequence diagram syntax that covers most work, plus the best videos, books, and docs to go deeper.
What Is Envoy?
Envoy explained: what the proxy behind Istio and modern Kubernetes gateways does, why it exists, and how its control plane model works.
What Is Boolean Logic?
Boolean logic explained: true, false, AND, OR, NOT, and the mental patterns a human needs before true or false can mean anything.
