We’ll get to the asterisk.

I run Wirewiki.com , a website to inspect internet infrastructure like domain names. It helps people check (historic) DNS records, DNS delegation, email deliverability config, etc.

There are a ton of sites that offer this (growing faster than ever thanks to vibe coding), so I need a way to stand out. I picked tool quality / usefulness and UX.

The autocomplete is the main way to navigate Wirewiki, so it should be as complete, accurate and fast as possible. I want it to be instant . Like, next frame instant.

I've mostly achieved that. Try for yourself:

Tab Cycle tabs

Navigate

Open

Here's how.

On keyDown (the user starts pressing a key), we prefetch the suggestions for the typed character + any next character.…