Search by keyword to find posts.
There are a total of 256 posts.
Published Dec 10, 2025 by whitedec
Understanding the Difference Between _, __, and . in Django ORM: When to Use user_id, user.id, or user__id?
A clear guide to the often‑confusing `_`, `__`, and `.` symbols in Django ORM. It explains the real‑world meaning of `u…
What Is a Reverse Proxy? A Quick Guide to Forward vs. Reverse Proxies, Their Purposes, and Use Cases
This guide clearly explains the differences between reverse and forward proxies, their purposes, and practical use case…
Published Dec 09, 2025 by whitedec
Desktop System Fan Replacement Review: What a Server Admin Learned by Doing It Yourself
Share a real‑world experience of solving fan noise on a desktop running 24/7 like a server. After swapping to a 5‑pack …
Ensuring Server‑to‑Server Integrity with HMAC Signatures in Django/DRF
Learn how to secure server‑to‑server communication in Django/DRF with HMAC signatures—covering key sharing, timestamp p…
Published Dec 08, 2025 by whitedec
Lessons from the React RCE Incident: Why HMAC Signatures, Key Rotation, and Zero Trust Matter
The React Server Components/Next.js RCE (CVE‑2025‑55182) demonstrates the dangers of unconditionally trusting client da…
React RCE Vulnerability (CVE-2025-55182): What Went Wrong and Why It Happened
The React Server Components vulnerability (CVE-2025-55182) disclosed in December 2025 allows unauthenticated remote cod…
Published Dec 05, 2025 by whitedec
Why Edge Includes Safari in Its User-Agent
Edge’s inclusion of Safari in its User‑Agent string is explained through 30 years of browser wars and legacy code, deta…
Malicious Bots Won’t Stop—Let’s Cut Them Off at the Front with Nginx: Cleaning Up Weird URLs Early
When you expose a web application, malicious bots and scanners will bombard it with odd requests. This guide shows how …
Why Is Cloudflare Free? Understanding CDN Mechanics and the Business Model
Explore why Cloudflare offers free CDN and security services, the underlying business model, and how the free plan bene…
Linux /usr Directory, the Butterfly Effect of a 50-Year-Old Hardware Incident
Discover why Linux’s /usr directory isn’t a user folder but a legacy of a 1971 disk‑space hack, how it evolved into Uni…
The True Identity and Role of the `/usr` Directory in Linux Filesystems
Clarifies the real purpose of the Linux /usr directory—often mistaken for a user home folder. Learn how /usr differs fr…
Linux AppImage: One‑File Desktop App Distribution
AppImage lets you run a full Linux desktop application from a single file without installation. It’s portable, root‑les…
Deploying Web Applications on Linux: Rethinking Docker in Favor of systemd.service
Explains when it’s better to deploy a web application on a Linux server using a systemd service instead of Docker. Cove…
Published Dec 04, 2025 by whitedec
Why VPNs Are Essential for Web Developers: Beyond Security to Service Quality
This article explains why web developers should use VPNs—not just for security but to improve service quality, payment …
Lightweight Docker Images with Django and Tailwind CSS: A Multi‑Stage Build Strategy
Learn how to keep your Django + Tailwind CSS Docker images lightweight by using a three‑stage multi‑stage build. Node.j…