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What breaks when you ship to ten locales at once

I localized a mobile app into ten languages. Most of what I'd read beforehand was about how to translate. Almost none of it was about what goes wron…

localizationi18nmobilelessonslearned
Dev.to Oct 3, 2026, 00:16 UTC
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The baseline that quietly stopped meaning anything (and closed real trades)

Last week a program I wrote closed every open position on a live trading account and refused to do any more work for the rest of the day. Nothing ha…

debuggingprogramminglessonslearnedfintech
Dev.to Aug 30, 2026, 06:51 UTC
EN

"Do Not Duplicate the Character" Duplicated the Character

We built a thing that takes one photo of a child and paints that child into a pre-written 10-page picture book. Thirty books, eleven pages each, on…

aipromptengineeringmachinelearninglessonslearned
Dev.to Aug 13, 2026, 08:39 UTC
EN

The checklist item that made 90 files permanently unfinished

I have a pipeline that generates document scaffolds — skeletons with blanks for a human to fill in. Every generated file looks roughly like this: &l…

programmingpythonlessonslearnedcodequality
Dev.to Jul 23, 2026, 23:00 UTC
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Lessons learned building a Kubernetes Auth Gateway

We're at the end of the series. Nine chapters of mechanism. One chapter of opinion. Building the Auth Gateway took roughly two years from "what if N…

lessonslearnedarchitectureplatformengineeringkubernetes
Dev.to May 4, 2026, 18:42 UTC

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