Daniel Pertu - DEV Community

Daniel Pertu

Oct 9

Our CSV export has 26 columns and not one of them is an email address

#typescript #nextjs #privacy #postgres

6 min read

Daniel Pertu

Oct 9

28 migration files, two of which cancel each other out, and not one of them written by hand

#postgres #database #typescript #devops

6 min read

Daniel Pertu

Oct 9

Our 53 Server Actions never throw at the UI, and one call to unstable_rethrow is why

#nextjs #react #typescript #webdev

6 min read

Daniel Pertu

Oct 9

Every animation in our app is declared paused, and one CSS selector is the play button

#css #react #animation #webdev

1

7 min read

Daniel Pertu

Oct 9

The server renders "midnight Pacific time" and the browser replaces it with 08:00, in the same element

#react #nextjs #typescript #webdev

6 min read

Daniel Pertu

Oct 9

Our llms-full.txt is 574,626 bytes generated from the same array that renders the pages

#nextjs #seo #ai #typescript

5 min read

Daniel Pertu

Oct 9

I put Redis on the delivery path of my WebSocket server, and it cost every phone in the room seconds

#redis #websockets #node #architecture

5 min read

Daniel Pertu

Oct 9

Sixty phones reconnect in the same second, and they all share one snapshot build

#websockets #node #performance #postgres

6 min read

Daniel Pertu

Oct 9

A hundred answers to a hundred phones is ten thousand messages, for a number only the host reads

#websockets #node #performance #architecture

5 min read

Daniel Pertu

Oct 9

Browsers answer WebSocket pings and never tell your JavaScript, so we send two heartbeats

#websockets #javascript #frontend #node

6 min read

Daniel Pertu

Oct 9

Our broadcast died with the function that sent it, and the fix was to stop firing and forgetting

#nextjs #serverless #node #webdev

5 min read

Daniel Pertu

Oct 9

Our game clock does not live in the app, because a serverless function cannot hold a timer for fifteen seconds

#architecture #nextjs #websockets #node

5 min read

Daniel Pertu

Oct 9

Two files hold the same listings, and only one of them survives you editing a search

#typescript #electron #node #architecture

8 min read

Daniel Pertu

Oct 9

Four product demos on our home page, not one of them a video, and every loop has to be able to cancel itself

#react #nextjs #webdev #typescript

1

8 min read

Daniel Pertu

Oct 9

Three of our pages render per request and thirty-five do not, and the only thing deciding that is whether a price is on screen

#nextjs #webdev #seo #typescript

7 min read

Daniel Pertu

Oct 9

Our displayed price is allowed to be wrong in one direction only, and Intl decides how many decimals it is wrong by

#typescript #javascript #webdev #nextjs

1

8 min read

Daniel Pertu

Oct 9

Our title budget is 60 characters, the layout quietly spends ten of them, and a test reads our own source files to prove it

#nextjs #typescript #seo #testing

1

7 min read

Daniel Pertu

Oct 9

Five sites claim one publisher, and the single line that differs between them is typed so a typo cannot compile

#typescript #seo #nextjs #webdev

1

7 min read

Daniel Pertu

Oct 9

Our recipe pages run the barcode scanner's engine on a recipe, at the strictest setting the app offers

#nextjs #typescript #architecture #seo

5 min read

Daniel Pertu

Oct 9

A rescan in the aisle is not a second scan, and three pure functions are the whole of our history screen

#reactnative #typescript #privacy #mobile

5 min read

Daniel Pertu

Oct 9

One Platform.OS branch decides whether our paywall gets a button or a sentence

#reactnative #stripe #webdev #typescript

5 min read

Daniel Pertu

Oct 9

Our licenses page lists no licenses, and the subsystem that absence deleted is object storage

#privacy #architecture #webdev #database

5 min read

Daniel Pertu

Oct 9

The only thing a scan tells our server is a barcode and a number, and that number decides what we curate next

#redis #privacy #architecture #typescript

5 min read

Daniel Pertu

Oct 9

Our product search index covers a tenth of the table, because a hit on the other nine tenths would say not found

#postgres #typescript #nextjs #webdev

5 min read

Daniel Pertu

Oct 9

Our longest practice run is 30 minutes in one page view, and two seconds in a hidden tab ends it

#javascript #react #webdev #nextjs

5 min read

Daniel Pertu

Oct 9

153 rows answer "which test did I just get invited to", and 33 of them say no

#typescript #seo #webdev #testing

4 min read

Daniel Pertu

Oct 9

We merged 25 games with no pages, and exactly two tests were allowed to fail

#nextjs #testing #typescript #seo

1

4 min read

Daniel Pertu

Oct 9

58 component prefixes for 56 providers, and includes('tsa') is a bug waiting to happen

#typescript #testing #architecture #webdev

4 min read

Daniel Pertu

Oct 9

Three of our six tests say "candidates report", the other three say "our estimate"

#typescript #testing #webdev #architecture

4 min read

Daniel Pertu

Oct 9

Two of the six tests we researched turned into pages instead of products

#typescript #testing #seo #architecture

4 min read

Daniel Pertu

Oct 8

We shipped an undo button and deleted it two minutes later, then brought the same code back for a different state

#typescript #react #postgres #architecture

2

5 min read

Daniel Pertu

Oct 8

A campaign takes on 200 places a day, and widening its search area costs no AI at all

#postgres #typescript #node #architecture

1

5 min read

Daniel Pertu

Oct 8

The drawings in our reel are the app's own React components, which cost one webpack alias and three CSS variables

#react #webdev #svg #typescript

2

6 min read

Daniel Pertu

Oct 8

Our reel has no licensed audio, because 130 lines of Node synthesise every sound in it

#node #javascript #audio #react

5 min read

Daniel Pertu

Oct 8

Four AI jobs, four model choices, and the one we picked for comments was not the most accurate

#ai #typescript #node #testing

5 min read

Daniel Pertu

Oct 8

A creator with no published email costs us nothing now, because the lookup moved to the front of the pipeline

#postgres #typescript #ai #architecture

5 min read

Daniel Pertu

Oct 8

Eleven loading.tsx files behind our login and none in front of it

#nextjs #react #webdev #frontend

5 min read

Daniel Pertu

Oct 8

Every sentence on our pages is in the response twice, and brotli charges us about 4 KB for it

#nextjs #react #performance #webdev

5 min read

Daniel Pertu

Oct 8

Our metadata test reads the page files as text, because importing one boots Supabase

#nextjs #testing #seo #typescript

6 min read

Daniel Pertu

Oct 8

Our font preload hint travels in the HTML on 70 pages and in a response header on 2

#nextjs #performance #webdev #css

5 min read

Daniel Pertu

Oct 8

Our name generator ships all 110 of its names in the HTML, before any JavaScript runs

#nextjs #react #seo #webdev

5 min read

Daniel Pertu

Oct 8

462 quiz questions on our site, and not one of them is marked up as a FAQPage

#seo #nextjs #webdev #typescript

5 min read

Daniel Pertu

Oct 8

Our OCR endpoint signs a receipt, because the confidence the client sends us proves nothing

#security #node #typescript #api

6 min read

Daniel Pertu

Oct 8

We deleted the hosted job runner, and the two schedules we have left are an hourly ping and a monthly invoice

#node #devops #typescript #architecture

6 min read

Daniel Pertu

Oct 8

A status is one word, so the sentence it needs lives in its own channel

#typescript #electron #node #programming

7 min read

Daniel Pertu

Oct 8

Fifteen required fields and no optional ones, because the type decides whether a site gets a page

#nextjs #seo #typescript #webdev

7 min read

Daniel Pertu

Oct 8

Our link audit called two citations broken, and curl proved it right and wrong at the same time

#seo #webdev #http #devops

1

4 min read

Daniel Pertu

Oct 8

A contributor reward is a Stripe coupon and not a balance credit, because a balance credit does not clear the VAT

#stripe #payments #saas #typescript

7 min read

Daniel Pertu

Oct 8

Six runtime dependencies and no build step, which is why our ledger is a text file

#electron #typescript #node #database

6 min read

Daniel Pertu

Oct 8

We started running outreach, and our inbound spam filter immediately became wrong

#ai #email #webdev #node

4 min read

Daniel Pertu

Oct 8

Our poll touches every search in turn, and the renderer gets one frame per 120ms

#typescript #electron #react #webdev

6 min read

Daniel Pertu

Oct 8

Supabase Free has no backups, so ours is two pg_dumps a night and the smaller one is kept twelve times longer

#postgres #devops #githubactions #cloudflare

6 min read

Daniel Pertu

Oct 8

Creating one account by hand touches three systems, and only one of them has transactions

#node #postgres #webdev #stripe

4 min read

Daniel Pertu

Oct 8

The backoff ladder was not the bug, the key was: per host, not per search

#typescript #node #electron #programming

6 min read

Daniel Pertu

Oct 8

The refund arrived after the payout, so the fix was two nullable columns and no code

#database #postgres #webdev #sql

4 min read

Daniel Pertu

Oct 8

Our 373 answer pages contain no written answers, because each one runs the rules engine twice at build time

#nextjs #seo #typescript #architecture

7 min read

Daniel Pertu

Oct 8

Our 30 second poll is measured start to start, and a cycle that overruns goes again in five seconds

#electron #typescript #node #programming

6 min read

Daniel Pertu

Oct 8

A discount has to show up on the pages that do not sell anything, which is how one price component became two

#react #webdev #typescript #a11y

1

4 min read

Daniel Pertu

Oct 8

Our recipe pages have no nutrition fields, because the grams are the only thing anybody typed

#typescript #architecture #webdev #nextjs

6 min read

Daniel Pertu

Oct 8

One TypeScript file lives in five repositories, and four of our five sites currently agree

#seo #webdev #typescript #nextjs

4 min read

1 Week Community Wellness Streak

Writing Debut

Want to connect with Daniel Pertu?