Poorly explain what you do for a living.

Rule number 1 in performances debug :

It's always I/O.

If it's not IO, then the code should be REALLY bad.

Two real reasons people write unit tests:
- mommy’s boy can’t even fart without mommy’s approval, but instead of mommy, there are unit tests now
- Stockholm syndrome

Imagine living in fucking 2021 and still be writing unit tests. If genius can generate gravity, with those stupid people I bet antigravity exists lmao

EoS1: This is the continuation of my previous rant, "The Ballad of The Six Witchers and The Undocumented Java Tool". Catch the first part here: https://devrant.com/rants/5009817/...

The Undocumented Java Tool, created by Those Who Came Before to fight the great battles of the past, is a swift beast. It reaches systems unknown and impacts many processes, unbeknownst even to said processes' masters. All from within it's lair, a foggy Windows Server swamp of moldy data streams and boggy flows.

One of The Six Witchers, the Wild One, scouted ahead to map the input and output data streams of the Unmapped Data Swamp. Accompanied only by his animal familiars, NetCat and WireShark.

Two others, bold and adventurous, raised their decompiling blades against the Undocumented Java Tool beast itself, to uncover it's data processing secrets.

Another of the witchers, of dark complexion and smooth speak, followed the data upstream to find where the fuck the limited excel sheets that feeds The Beast comes from, since it's handlers only know that "every other day a new one appears on this shared active directory location". WTF do people often have NPC-levels of unawareness about their own fucking jobs?!?!

The other witchers left to tend to the Burn-Rate Bonfire, for The Sprint is dark and full of terrors, and some bigwigs always manage to shoehorn their whims/unrelated stories into a otherwise lean sprint.

At the dawn of the new year, the witchers reconvened. "The Beast breathes a currency conversion API" - said The Wild One - "And it's claws and fangs strike mostly at two independent JIRA clusters, sometimes upserting issues. It uses a company-deprecated API to send emails. We're in deep shit."

"I've found The Source of Fucking Excel Sheets" - said the smooth witcher - "It is The Temple of Cash-Flow, where the priests weave the Tapestry of Transactions. Our Fucking Excel Sheets are but a snapshot of the latest updates on the balance of some billing accounts. I spoke with one of the priestesses, and she told me that The Oracle (DB) would be able to provide us with The Data directly, if we were to learn the way of the ODBC and the Query"

"We stroke at the beast" - said the bold and adventurous witchers, now deserving of the bragging rights to be called The Butchers of Jarfile - "It is actually fewer than twenty classes and modules. Most are API-drivers. And less than 40% of the code is ever even fucking used! We found fucking JIRA API tokens and URIs hard-coded. And it is all synchronous and monolithic - no wonder it takes almost 20 hours to run a single fucking excel sheet".

Together, the witchers figured out that each new billing account were morphed by The Beast into a new JIRA issue, if none was open yet for it. Transactions were used to update the outstanding balance on the issues regarding the billing accounts. The currency conversion API was used too often, and it's purpose was only to give a rough estimate of the total balance in each Jira issue in USD, since each issue could have transactions in several currencies. The Beast would consume the Excel sheet, do some cryptic transformations on it, and for each resulting line access the currency API and upsert a JIRA issue. The secrets of those transformations were still hidden from the witchers. When and why would The Beast send emails, was still a mistery.

As the Witchers Council approached an end and all were armed with knowledge and information, they decided on the next steps.
The Wild Witcher, known in every tavern in the land and by the sea, would create a connector to The Red Port of Redis, where every currency conversion is already updated by other processes and can be quickly retrieved inside the VPC. The Greenhorn Witcher is to follow him and build an offline process to update balances in JIRA issues.
The Butchers of Jarfile were to build The Juggler, an automation that should be able to receive a parquet file with an insertion plan and asynchronously update the JIRA API with scores of concurrent requests.
The Smooth Witcher, proud of his new lead, was to build The Oracle Watch, an order that would guard the Oracle (DB) at the Temple of Cash-Flow and report every qualifying transaction to parquet files in AWS S3. The Data would then be pushed to cross The Event Bridge into The Cluster of Sparks and Storms.
This Witcher Who Writes is to ride the Elephant of Hadoop into The Cluster of Sparks an Storms, to weave the signs of Map and Reduce and with speed and precision transform The Data into The Insertion Plan.
However, how exactly is The Data to be transformed is not yet known.

Will the Witchers be able to build The Data's New Path? Will they figure out the mysterious transformation? Will they discover the Undocumented Java Tool's secrets on notifying customers and aggregating data?

This story is still afoot. Only the future will tell, and I will keep you posted.

Paycom is utter dogshit.

Clunky, error prone, junior mistakes on every page, and filled to the brim with HR doublespeak and legalese.

A roving gang of quadriplegic interns could do a better job if the requirements were written in cuneiform and they were paid, up front, in cocaine and whiskey.

Got laid off my by old employer back in 2019 because they have their priorities completely wrong.
Got a mail today whether I could fix something for them (ofc, they wanted me to do it essentially for free).
One of the websites I built for a customer back when I still worked there had a massive bug (that I was aware off and patched in later versions of the library causing it).
They never updated it so, I told them "just update the library".

Apparently, the idiot that was in charge of maintaining said site after I left didn't know how to and completely broke everything.
The hilarious part: While I setup everything using stuff like Docker and Git to make rollbacks easy...
That idiot went back to FTP and manually upgrading the databases through PhpMyAdmin :^)
He nuked the entire site.
Database? Gone.
Codebase? Borked (installed a version with a lot of breaking changes without properly reading the migration guide).
And knowing that shit company, they don't have any backups either.

They said "I wasn't needed because we have other good devs" when they laid me off.
Uhu, I can eh... see those good devs doing their job :^)

Recently I've played around with the Seam Carving algorithm for the content-aware image resizing.

It turned out that the algorithm is pretty powerful, elegant but yet simple. One of the interesting parts was that it might be optimized with the Dynamic Progrming approach. Also, it may perform a simple object removal from the image without even modern ML algorithms.

I've tried to describe my experience here in the interactive article:
https://trekhleb.dev/blog/2021/...