#HeadErs

> TL;DR — I run four different domains off one Next.js codebase: a marketing site at...

Requests to Serverless and Edge Functions now include timezone and location headers, letting you personalize experiences based on visitor geography without additional setup.

Vercel now has advanced Remix support, including SSR streaming with Edge Functions and multi-runtime support.

Vercel now supports the HTTP Vary header, enabling faster delivery of personalized, cached content based on location and language. Improve site performance and reduce compute automatically with Edge Network caching.

Vercel's CDN now supports CDN-Cache-Control headers for external backends, giving you simple, powerful caching control without any configuration changes.

Transform rules allow you to modify request headers, response headers, and request query parameters through the vercel.json.

Sandbox network policies now support HTTP header injection to prevent secrets exfiltration by untrusted code

A complete checklist of HTTP security headers to protect your web application from XSS, clickjacking, MIME sniffing, and other attacks.

From Dev.to - python: From Cold Starts to Hot Paths: How I Cut LLM Inference Latency by 40% with a Simple Routing Trick

Every website owner faces the same challenge in 2026: cyber threats are more sophisticated than ever,...

The Danger of Inline Scripts Cross-Site Scripting (XSS) remains one of the most critical...

Introduction Data is only as powerful as the shape it’s in. Before dashboards tell compelling stories...

I got tired of API keys and auth headers syncing to someone else's cloud every time I tested an...

From Dev.to - security: SecurityHeaders.com Shut Down Its API — Here Are the Best Alternatives (2026)

From Dev.to - ios: 10 App Store Connect API scripts I actually use to manage 4 iOS apps (without clicking through the web UI)

From Dev.to - security: CVE-2026-39805: CVE-2026-39805: CL.CL HTTP Request Smuggling in Bandit Web Server

CSV files look simple, but import errors are surprisingly common. A single malformed row,...

From Dev.to - productivity: Retro File Upload Bot: Automate Legacy File Uploads in Python (No GUI Needed)

From Dev.to - security: GHSA-7WW3-XVF5-CXWM: GHSA-7ww3-xvf5-cxwm: Missing Defense-in-Depth HTTP Headers in ciguard Web UI

Building a registration or newsletter form? Here is how to validate emails properly — catch typos,...