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Articles tagged with #devops
Editors update imports when you move a file, not the strings in package.json, a Dockerfile COPY, a workflow run: line or CODEOWNERS. Why that breaks CI, how to find the stale paths by hand, and a free VS Code extension that checks config file paths live and fixes them on rename.
A giant system prompt, a block of few-shot examples, a document pasted in front of every request - if it never changes and you have not turned on prompt caching, you re-buy those exact tokens on every call. Here is why that is a silent 5-10x overspend, how the OpenAI and Anthropic caches actually differ, and primecache, a static gate that fails the build when a cacheable prefix ships uncached.
Port is already allocated" from Docker and EADDRINUSE from Node mean two things want one host port, and both are usually already written down in the repo. Why it happens, how to fix it, and a free VS Code extension that flags port clashes before anything starts.
he file is in the image and the container still dies instantly. Why CRLF line endings, a UTF-8 BOM, a missing shebang or a missing executable bit cause "no such file or directory", "exec format error" and "permission denied", how to fix each, and a free VS Code extension that flags them on the line that runs the script.
Docker Compose never fails on a missing ${VAR}. It prints one warning, substitutes an empty string and starts anyway. Why .env and env_file are not the same, why $VAR in command: is read from your laptop, and a free VS Code extension that catches it first.
MCP has four annotations that let a client know whether a tool reads, mutates, deletes, or reaches the open world. Almost nobody sets them - so the agent guesses. hintgap is a static scan that fails the build when a tool ships without them.
