Shipping a Cloudflare Worker with empty D1 from day one
A clean schema lifecycle beats patching production tables. How I bootstrap bindings, migrations, and a first successful deploy without legacy baggage.
Engineering Notes
Alex Chen
Notes on systems, tools, and building on the web.
I write practical notes from real projects: Cloudflare Workers, data models, production debugging, and the small tooling choices that keep systems reliable.
Recent Posts
Latest writing-
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Why calendar APIs rarely mean local days
Expanding the query window and filtering by Asia/Hong_Kong local dates fixed a whole class of “missing today’s items” bugs.
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Telegram photos: download, then multipart
Remote image URLs look convenient until they fail quietly. Fetching bytes in the Worker and uploading multipart is the path that actually sticks.
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Designing a personal bot with settled product defaults
Single-user access, quiet empty days, and manual commands over noisy digests. Constraints that make automation feel calm instead of chatty.
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Windows tooling notes for agent-friendly workflows
PowerShell paths, UTF-8 writes, and portable Node setups that survive when Git or Unix assumptions are missing from the machine.