May 2026

AWS Amplify Hosting passes CloudFront geo headers (country, region, ASN, device type, postal code, lat/long) to SSR. How to access them in SvelteKit.

Stale fragments of another app flickering on localhost? It's likely an old Service Worker. Here's how to detect it and disable SW in SvelteKit dev mode.

A summary of ytyng.com being featured in the "Useful Content" section of FreelanceHub, operated by Leverages Co., Ltd. Covers the context of the featured article, the FreelanceHub service, and the 5 media/blogs listed alongside ytyng.com.

Compare ULID and UUIDv7 as 128-bit sortable IDs — standardization, library support, and how to use UUIDv7 as a primary key in Django 5.2 + Python 3.14 + PostgreSQL 18.

Build a macOS 26 screensaver (.saver bundle) without Xcode — compile with `swiftc` alone and display a WebView as your screensaver.

When CSS `opacity` transitions don't animate inside WKWebView, force a layer with `will-change` or `transform: translateZ(0)` — the usual workaround.

Tried Cloudflare's new CMS EmDash on Cloudflare Workers and saw TTFB of 500ms–3000ms. Even a text-only about page lands above 400ms. With comparisons, a breakdown of the bottleneck, and links to third-party benchmarks.

How I shipped a custom plugin that calls Brevo's HTTP API to make magic-link auth work on an EmDash site deployed to Cloudflare Workers. Covers what's wrong with the existing plugins, why Brevo, the sandboxed-vs-plugins trap, and how to store the API key.

Build a single-file executable Python script with PEP 723 inline metadata and uv shebang support, including dependency management. Add the metadata block and run it directly with uv.