runtocoast — personal blog

Đâu ra cái câu này zậy?

Theo như mình được biết thì câu hỏi này bắt nguồn từ một bài viết được đính đề xuất và khá là viral trên Thread aka Thread City. Và nguyên nhân khiến nó viral là được một vloger Khoai Lang Thang comment bài viết. Thế là từ đó nó nổi rần rần từ Thread qua các nền tảng xã hội khác. Đầu giờ chiều nay tôi ngủ dậy, mở máy lên, vào youtube làm tý nhạc chill chill làm việc thì đập ngay vào mắt tôi là một cái podcast với tiêu đề như bài viết này =)). Đó là lý do vì sao tôi muốn bóc tách và làm rõ cái khái niệm này trong bài viết này.

Add a record, not a migration

With CNAME flattening support, connecting a custom domain is just a DNS record away. Keep your existing provider, add a CNAME or ALIAS/ANAME record pointing to Appwrite, and verify the domain in the Console. Once DNS propagates, your site is live with SSL automatically configured. DNS propagation can take anywhere from a few minutes to a few hours depending on your provider and TTL settings.

This is especially useful for teams that rely on their DNS provider for more than just domain resolution. If Cloudflare handles your caching, security headers, or MX records, you no longer have to choose between that setup and Appwrite Sites.

Outlines: A Living Design Document

The Outlines feature fundamentally improves code comprehension directly within the IDE. It generates concise, high-level English summaries interleaved with your source code.

How CNAME flattening works

Standard DNS rules don't allow CNAME records at the root domain (example.com). Only subdomains (www.example.com) can use CNAME. CNAME flattening works around this: your DNS provider accepts a CNAME-like configuration at the root, resolves the target internally, and returns the corresponding IP addresses to the client.

Depending on your provider, this goes by different names. Cloudflare calls it CNAME flattening, Route 53 uses ALIAS records, and some providers support ANAME records. The implementation varies, but the result is the same: your root domain can point to a hostname without breaking DNS standards.

Connect your domain

Open your site's domains tab in the Appwrite Console.
Add your custom domain.
Appwrite provides a CNAME record details.
Go to your DNS provider and create a DNS record as described by Appwrite. Providers like Cloudflare will handle CNAME flattening at the root automatically. On other providers, you may need to use an ALIAS or ANAME record for the root domain.
Return to Appwrite and verify the domain.

Available now

CNAME flattening support is available today on Appwrite Cloud. Head to your site dashboard, add a custom domain, and follow the updated DNS instructions.