https://nalar.dev/tags/development-environment/ Recent content in Development Environment on Nalar Hugo en-us Sat, 19 Sep 2026 00:00:00 +0000 https://nalar.dev/how-github-codespaces-uses-core-hours-port-forwarding-and-ci/ Sat, 19 Sep 2026 00:00:00 +0000 https://nalar.dev/how-github-codespaces-uses-core-hours-port-forwarding-and-ci/ <p>A GitHub Codespace is a development machine running in the cloud, not a CI runner with an editor attached. It stays interactive while a developer edits files, runs commands, starts servers, debugs processes, and commits changes. That distinction explains three behaviors that are easy to confuse: how compute quota is measured, how <code>localhost</code> becomes reachable from a browser, and where CI begins after code is pushed.</p> <h2 id="core-hours-measure-machine-capacity-multiplied-by-active-time">Core-hours measure machine capacity multiplied by active time</h2> <p>Codespaces compute usage is measured in core-hours. The accounting model is straightforward:</p>