All
Articles 169,180Blog Posts 161,024Tech Tutorials 44,947Research Papers 32,800News 21,550
⚡ AI Lessons

Dev.to · John Builds
1w ago
The bug report said 6 fields. The contract test said 13.
We had one API input schema declared twice. A Zod schema validated requests on the npm package path....

Dev.to · John Builds
1w ago
The same failed payment destroyed one customer's data and left the next one's alone
We had a bug that only fired sometimes, and "sometimes" turned out to be a coin flip on webhook...

Dev.to · John Builds
🖊️ Copywriting & Content Strategy
⚡ AI Lesson
3w ago
The most specific sentence in your draft is usually not the first line
I spent a year writing posts that were technically true and completely unreadable. "Learned a lot...

Dev.to · John Builds
🔧 Backend Engineering
⚡ AI Lesson
3w ago
Our test stubbed the bug, so the bug passed
A vendor API we integrate with sends a field called publicaly_available_post_id. That is not a typo...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
3w ago
My A/B test wasn't broken. My counter was.
I ran a 50/50 homepage split for a couple of weeks. The arm counts came back 178 to 57. That is not...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
1mo ago
Cut down, do not pad up: a distribution habit that took me too long to learn
For about four months I ran what I thought was a content distribution system. I wrote one post,...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
1mo ago
The two changes that fixed Instagram for me, neither about quality
I spent about a year being bad at Instagram before I admitted the problem wasn't the platform. I'd...

Dev.to · John Builds
🔧 Backend Engineering
⚡ AI Lesson
1mo ago
The bug that taught me to grep before I git blame
A user reported that a feature had stopped working. Classic regression report: "we used to have X,...

Dev.to · John Builds
🚀 Entrepreneurship & Startups
⚡ AI Lesson
1mo ago
The two-job problem: why solo founders quit posting by week two
Every "post every day" attempt I made died the same way: strong Monday, decent Tuesday, gone by...

Dev.to · John Builds
🖌️ UI/UX Design
⚡ AI Lesson
2mo ago
Drag-and-drop rescheduling with dnd-kit: the four edge cases that were the actual feature
We added drag-and-drop rescheduling to our social media calendar (Next.js + dnd-kit, Rails API behind...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
2mo ago
I separated writing from scheduling and finally stayed consistent on social
I market my SaaS through social posts, and for a year my pattern was: strong posting week, busy build...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
2mo ago
Why your AI-written posts sound generic (and the one input change that fixes it)
I spent months drafting social posts with AI to stay consistent as a solo founder. The posts shipped...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Does Reposting Your Own Tweet Help? What the X Algorithm Actually Does
Short answer: sometimes. Reposting your own tweet on X can squeeze a little extra reach out of a post...

Dev.to · John Builds
🔧 Backend Engineering
⚡ AI Lesson
3mo ago
How to persist landing page attribution across OAuth redirects (30 lines of middleware)
Landing page attribution breaks the moment a user hits an OAuth flow. Here's the scenario: you're...

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
From GTM migration to missing UTM columns: getting ad attribution right as a solo founder
Last month I migrated XreplyAI from hardcoded gtag snippets to Google Tag Manager. One container....

Dev.to · John Builds
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Why we moved from hardcoded gtag snippets to Google Tag Manager in our Next.js app
For the first year of building XreplyAI, our tracking setup was the standard mess: gtag scripts in...

Dev.to · John Builds
🖌️ UI/UX Design
⚡ AI Lesson
4mo ago
What I built this week: moving publish actions into the editor to fix a silent drop-off problem
Sometimes the bug isn't in the code it's in the flow. We have a thread editor in XreplyAI (Rails API...
DeepCamp AI