DNS Explained for Developers: Records, TTL and "Propagation"
A, AAAA, CNAME, MX, TXT and NS records in plain English, why DNS changes seem slow, and the troubleshooting commands that tell you what is really going on.
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Tips & writing
Notes from the workbench
Practical engineering tips, design theory and performance breakdowns — written for developers and founders who like their advice tested in production.
Filtering by tag #email — clear
Sending Email from Your Web App Without Landing in Spam
Password resets and receipts that end up in spam are a broken product. How transactional email works, SPF, DKIM and DMARC in plain English, and the habits that keep your emails in the inbox.
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