Human Approval in AI Automation - Put the Pause Before the Side Effect
An AI application that drafts an email and one that sends the email may use the same model, but they do not carry the same kind of authorit…
systemd Resource Controls for a Home Server - Give One Service a Ceiling Without Calling It Isolation
A home server often asks one small machine to do several jobs at once. A web application, database, thumbnail generator, and background wor…
Problem Details for a Small PHP API - Give Errors a Stable Shape Without Hiding HTTP
An API can return 422, but a client may still need to know whether a title is missing, a date is invalid, or a state transition is no longe…
ActivityPub for a Personal Website — What Federation Standardizes, and What It Leaves to You
ActivityPub for a Personal Website — What Federation Standardizes, and What It Leaves to You A personal website usually speaks in one dire…
Rate Limiting for a Small Web Application — Slow Down Repeated Failures Without Locking Out Real Users
Somebody is going to try to sign in to your application with the wrong password thousands of times. If your login form is on the open inter…
Cook Ding's Knife — What the Zhuangzi Skill Story Actually Says (and Does Not)
Somewhere along the way, the story of Cook Ding became a productivity meme. A butcher carves an ox for a ruler, his knife moves like a danc…
systemd Credentials for Service Secrets - Pass Data Without Putting It in the Environment
A background service needs a database password before it can do useful work. Putting that password in Environment= looks convenient: the ap…
WebSub for a Personal Website - Let the Feed Announce Its Updates
A feed reader can discover a new article by checking a website's feed every few minutes. That works, but it creates an awkward choice: chec…
Content-Disposition in PHP - A Download Filename Is Metadata, Not a Header Fragment
A PHP endpoint has selected the correct PDF, checked that the current user may download it, and is ready to send the response. One small qu…
Keyset Pagination in MariaDB - Continue After the Last Row, Not an Offset
A list can look stable while someone reads it and still move underneath the pagination controls. Suppose page one shows the newest 20 artic…