GitLab CI vs Jenkins: Which One Should You Choose?

⚔️ GitLab CI vs Jenkins: Which One Should You Choose? Both GitLab CI and Jenkins are popular tools for automating builds, tests, and deployments. But they follow different philosophies and suit different types of teams. 🧠 What Is Jenkins? Jenkins is an open-source automation server that has been around for over a decade. It’s extremely flexible thanks to thousands of plugins, allowing you to integrate with almost any tool. ✅ Pros: ...

November 9, 2025 · 2 min · 269 words · John Cena

What Are Helm Jobs and How to Use Them

⚙️ What Are Helm Jobs and How to Use Them When deploying applications in Kubernetes with Helm, sometimes you need to run a one-time task — like initializing a database, migrating data, or running cleanup scripts. That’s where Helm Jobs come in. 🧩 What Is a Helm Job? A Helm Job is just a regular Kubernetes Job resource defined inside a Helm chart. It runs once (or until success), unlike Deployments or StatefulSets that keep running. ...

November 9, 2025 · 2 min · 244 words · John Cena

How to Use Linux Parallel to Speed Up CI

🚀 How to Use Linux Parallel to Speed Up CI When your CI pipeline takes too long, it often means too many tasks are running sequentially. The tool GNU Parallel allows you to execute commands in parallel, saving a lot of time — especially for builds, tests, or deployments. 🧩 What Is GNU Parallel? GNU Parallel is a command-line utility for running multiple shell commands at once. It splits your workload into parts and executes them across available CPU cores. ...

November 1, 2025 · 2 min · 220 words · John Cena

Helm include vs template: What's the Difference and When to Use Each

Helm include vs template — What’s the Difference and When to Use Each Helm provides two commonly used functions for rendering reusable templates: template and include. At first glance, they seem similar — both insert one template inside another — but there’s a subtle and important difference. Let’s break it down simply and clearly. 🔍 Key Difference Fucnction Return Difference template Nothing (Renders the template directly into the output.) For direct insert of tempaltes include String more flexible — can modify output 📘 Example 1 template template function just inserts content of teplate in current output. ...

October 20, 2025 · 2 min · 310 words · John Cena

Nginx Headers Explained: The Most Important Ones

Nginx Headers Explained: The Most Important Ones HTTP headers are metadata exchanged between a client and a server. In Nginx, headers can be added, modified, or removed with: add_header <name> <value> [always]; Key Nginx Headers 1. Content-Security-Policy (CSP) Restricts which resources (JS, CSS, images) can be loaded. Example: add_header Content-Security-Policy "default-src 'self';"; 2. X-Frame-Options Prevents clickjacking by blocking iframes. add_header X-Frame-Options "SAMEORIGIN"; 3. X-Content-Type-Options Stops MIME type sniffing. add_header X-Content-Type-Options "nosniff"; 4. Strict-Transport-Security (HSTS) Forces HTTPS connections. ...

October 17, 2025 · 1 min · 154 words · John Cena