https://jecklgamis.com/tags/kubernetes/Recent content in Kubernetes on jecklgamis.comHugoen-usThu, 16 Apr 2026 13:49:15 +1000https://jecklgamis.com/guides/gatling-scala-example/Thu, 16 Apr 2026 00:00:00 +0000https://jecklgamis.com/guides/gatling-scala-example/<p>A Gatling load testing example in Scala with multiple ways to run simulations against an HTTP target.</p> <h2 id="features">Features</h2> <ul> <li>Simulation written in Scala using the Gatling DSL</li> <li>Configurable via system properties (URL, duration, rate, thresholds)</li> <li>Four execution modes: Maven plugin, executable jar, Docker, Kubernetes Job</li> <li>Bundled Node.js HTTP test server as a minimal system under test</li> <li>Helm chart for Kubernetes deployment</li> <li>GitHub template — clone from a clean slate with one click</li> </ul> <h2 id="getting-started">Getting Started</h2> <h3 id="requirements">Requirements</h3> <ul> <li>JDK 21</li> <li>Node.js (for the bundled test server)</li> <li>Maven</li> <li>Docker (optional)</li> </ul> <h3 id="start-the-test-app">Start the Test App</h3> <p>The included test server is a minimal Node.js HTTP server that echoes requests back.</p>https://jecklgamis.com/guides/websocket-client-server-skeleton-using-fastapi/Wed, 15 Apr 2026 00:00:00 +0000https://jecklgamis.com/guides/websocket-client-server-skeleton-using-fastapi/<p>A production-ready WebSocket client/server app using FastAPI.</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>docker run --rm --name websocket-python-example -p 8080:8080 -it jecklgamis/websocket-python-example:main </span></span></code></pre></div><h2 id="tech-stack">Tech Stack</h2> <ul> <li><strong>FastAPI</strong> - async web framework with WebSocket support</li> <li><strong>websockets</strong> - WebSocket client library</li> <li><strong>Pydantic v2</strong> - validation and settings management</li> <li><strong>Docker</strong> - containerized deployment (Python 3.12-slim)</li> <li><strong>Helm</strong> - Kubernetes deployment chart</li> <li><strong>Ruff</strong> - linting and formatting</li> <li><strong>pytest</strong> - testing with async support</li> </ul> <h2 id="project-structure">Project Structure</h2> <pre tabindex="0"><code>├── app/ │ ├── __init__.py # Global logging init (INFO level) │ ├── main.py # FastAPI application entry point │ ├── config.py # Environment-specific settings (dev/test/prod) │ └── routers/ # API route handlers │ └── websocket.py # WebSocket /ws endpoint ├── tests/ # Test suite ├── deployment/ │ └── k8s/helm/ # Helm chart and deploy Makefile ├── websocket_client.py # WebSocket client ├── run-server.sh # Start the server ├── run-client.sh # Start the client ├── Dockerfile ├── Makefile └── pyproject.toml </code></pre><h2 id="getting-started">Getting Started</h2> <h3 id="prerequisites">Prerequisites</h3> <ul> <li>Python 3.12+</li> <li><a href="https://github.com/astral-sh/uv">uv</a> (recommended)</li> <li><a href="https://www.docker.com/">Docker</a> (for containerized deployment)</li> </ul> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#75715e"># Clone the repository</span> </span></span><span style="display:flex;"><span>git clone git@github.com:jecklgamis/websocket-python-example.git <span style="color:#f92672">&amp;&amp;</span> cd websocket-python-example </span></span></code></pre></div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#75715e"># Install dependencies</span> </span></span><span style="display:flex;"><span>make install-deps </span></span></code></pre></div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#75715e"># Start the dev server (uses .env.dev by default)</span> </span></span><span style="display:flex;"><span>make run-dev </span></span></code></pre></div><p>The server will be available at <code>http://localhost:8080</code>. This will reload on file changes.</p>