152 articles
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 question remains: what should the saved file be called? It is tempting to place a …
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A list can look stable while someone reads it and still move underneath the pagination controls. Suppose page one shows the newest 20 articles. Before the read…
Two database transactions can each be valid on their own and still become unable to continue when they run together. One holds a lock the other needs; the seco…
RAG for Small AI Applications - Retrieve Evidence Without Treating It as Truth When a language model answers a question about a private document, a product ma…
A browser console says that a request was “blocked by CORS.” The API may still return 200 OK in a terminal, and adding Access-Control-Allow-Origin: * may appea…
A process can still have a PID, consume little CPU, and appear as active (running) while its useful work has stopped. Its event loop may be blocked, a worker m…
A post row says its author is user 42, but user 42 does not exist. The application can hide the missing name, return an error, or quietly show “unknown author,…
One article can quietly acquire several addresses. A tracking parameter creates one URL, a print view creates another, and an old route may still serve the sam…
A service can be absent from the process list while its address is already listening. That sounds contradictory only if the daemon must own both jobs. With sys…
A form saves a new record, the browser shows a success page, and then someone presses refresh. Should that refresh display the result again, or should it send …
