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Joined devRant on 4/30/2018
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"full stack" means "you'll be doing everything from gathering client requirements through data architecture up to the UI design and of course implementing all of it"
"backend" means "you'll be coding everything from database through server-side code and client-side code including html and css"
"we need you on-site all day every day" means "we have no idea how and why we should use repositories with remote access despite being a company developing an internet app, and we don't trust that you would be working anyway"
"interesting challenging projects" means "the same boring crap as every other company, running on an incredibly botched and dezorganized codebase".
"competitive pay" means "actual pay is around 1.5 times the minimum allowed pay, and everything else is being siphoned off into (stupid and useless) 'benefits' like massage and fitness discount coupons"
"friendly collective having fun at numerous company events each years" means "it is mandatory for you to participate on our weekend drinking retreats but you'll only find out when we fire you because you're 'not a team player' after you refused to participate on those"9 -
Toilets and race conditions!
A co-worker asked me what issues multi-threading and shared memory can have. So I explained him that stuff with the lock. He wasn't quite sure whether he got it.
Me: imagine you go to the toilet. You check whether there's enough toilet paper in the stall, and it is. BUT now someone else comes in, does business and uses up all paper. CPUs can do shit very fast, can't they? Yeah and now you're sitting on the bowl, and BAMM out of paper. This wouldn't have happened if you had locked the stall, right?
Him: yeah. And with a single thread?
Me: well if you're alone at home in your appartment, there's no reason to lock the door because there's nobody to interfere.
Him: ah, I see. And if I have two threads, but no shared memory, then it is as if my wife and me are at home with each a toilet of our own, then we don't need to lock either.
Me: exactly!12 -
So a few days ago I felt pretty h*ckin professional.
I'm an intern and my job was to get the last 2003 server off the racks (It's a government job, so it's a wonder we only have one 2003 server left). The problem being that the service running on that server cannot just be placed on a new OS. It's some custom engineering document server that was built in 2003 on a 1995 tech stack and it had been abandoned for so long that it was apparently lost to time with no hope of recovery.
"Please redesign the system. Use a modern tech stack. Have at it, she's your project, do as you wish."
Music to my ears.
First challenge is getting the data off the old server. It's a 1995 .mdb file, so the most recent version of Access that would be able to open it is 2010.
Option two: There's an "export" button that literally just vomits all 16,644 records into a tab-delimited text file. Since this option didn't require scavenging up an old version of Access, I wrote a Python script to just read the export file.
And something like 30% of the records were invalid. Why? Well, one of the fields allowed for newline characters. This was an issue because records were separated by newline. So any record with a field containing newline became invalid.
Although, this did not stop me. Not even close. I figured it out and fixed it in about 10 minutes. All records read into the program without issue.
Next for designing the database. My stack is MySQL and NodeJS, which my supervisors approved of. There was a lot of data that looked like it would fit into an integer, but one or two odd records would have something like "1050b" which mean that just a few items prevented me from having as slick of a database design as I wanted. I designed the tables, about 18 columns per record, mostly varchar(64).
Next challenge was putting the exported data into the database. At first I thought of doing it record by record from my python script. Connect to the MySQL server and just iterate over all the data I had. But what I ended up actually doing was generating a .sql file and running that on the server. This took a few tries thanks to a lot of inconsistencies in the data, but eventually, I got all 16k records in the new database and I had never been so happy.
The next two hours were very productive, designing a front end which was very clean. I had just enough time to design a rough prototype that works totally off ajax requests. I want to keep it that way so that other services can contact this data, as it may be useful to have an engineering data API.
Anyways, that was my win story of the week. I was handed a challenge; an old, decaying server full of important data, and despite the hitches one might expect from archaic data, I was able to rescue every byte. I will probably be presenting my prototype to the higher ups in Engineering sometime this week.
Happy Algo!8 -
A guide to estimations.
1) don’t give an immediate answer. The first “timeframe” you give will be held against you and will result in overtime and working weekends.
2) think of a relevant piece of work and the time that took.
2.1) if it’s something you haven’t done before, add some adequate research time.
3) allow half a day of testing for every day of development.
4) add a day as buffer - this is good for on the fly bug fixes
5) calculate time
6) now give an educated estimate.
7) this should take you 5 seconds to get through mentally.
8) if scope creep occurs: goto:15 -
Before an interview prepare a list of questions for them, they expect it!
My list to give inspiration:
Describe your company culture? - if the response is buzzword heavy, avoid.
What’s the oldest technology still in use? - all companies have legacy systems but some are worse than others
Describe your agile process? - a few companies I’ve interviewed with said they are agile but it’s actually kanban
Are developers involved with customers?- if they trust you to talk to customers you can infer trust to do your job ( I’m sure others will disagree)
Describe your development environment?- do they have such a thing as dev, test and prod?
These are the only ones I can remember but should give others a bit of inspiration I hope 😄9 -
I read your CV and i called you for this interview but now i see that you are not qualified for this position.
You have to be certified by CISCO as a Software Developer.
That was the moment I knew he is a fucktard.1 -
So a guy wants to start a company with me. He wants to be CEO 👨💼 I'm fine with it but now he also wants me to obey every one of his orders such as attend long unplanned meetings, go do market research, code the app and for what, a mere 5%. He gets a bigger cut of the income because he came up with the idea 💡, he also gets to sit and order me around because he's read a few books on business and economics. People don't seem to understand the difference between having an idea and implementation. I just left and said no to every offer he had the highest of which was 10%, don't be worried about the money he says this is a real opportunity for you. I mean wtf is wrong with some people.13
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Job interview for junior dev position:
Recruiter: Implement stack
Me: Here you go *typical C++ stack implementation, struct node, push, pop*
Recruiter: This is classical over engineering, you should just inherit from std::stack
Me: wtf?14 -
My company doesn't allows or uses Wi-Fi. It's too dangerous... Like fucking really. We also don't use a repository. We version stuff by dates folders. Yes we are a ecommerce business.26
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I work at a small company that uses very outdated coding approaches for their solutions.
About a year ago I went through our main application to improve performance and found quite a few areas that I could tackle such as using a dictionary data structure in place of (many) foreach loops that required to pull out a single object.
That specific change yielded a lot of improvement (you can only imagine) and the other developers wanted to learn the ways of dictionaries (because it was so revolutionary and new to them). I showed them many examples so that they could better understand this data structure.
Fast forward to a few months later, saw one of my coworker's code and noticed that they were using a dictionary... And iterating through each kvp similar to a foreach..... Wtf?!
P.S. that person's salary is much higher than mine :(
First time rant. Thanks for listening!10 -
Yesterday, in a meeting with project stakeholders and a dev was demoing his software when an un-handled exception occurred, causing the app to crash.
Dev: “Oh..that’s weird. Doesn’t do that on my machine. Better look at the log”
- Dev looks at the log and sees the exception was a divide by zero error.
Dev: “Ohhh…yea…the average price calculation, it’s a bug in the database.”
<I burst out laughing>
Me: “That’s funny.”
<Dev manager was not laughing>
DevMgr: “What’s funny about bugs in the database?”
Me: “Divide by zero exceptions are not an indication of a data error, it’s a bug in the code.”
Dev: “Uhh…how so? The price factor is zero, which comes from a table, so that’s a bug in the database”
Me: “Jim, will you have sales with a price factor of zero?”
StakeholderJim: “Yea, for add-on items that we’re not putting on sale. Hats, gloves, things like that.”
Dev: “Steve, did anyone tell you the factor could be zero?”
DBA-Steve: “Uh...no…just that the value couldn’t be null. You guys can put whatever you want.”
DevMgr: “So, how will you fix this bug?”
DBA-Steve: “Bug? …oh…um…I guess I could default the value to 1.”
Dev: “What if the user types in a zero? Can you switch it to a 1?”
Me: “Or you check the factor value before you try to divide. That will fix the exception and Steve won’t have to do anything.”
<awkward couple of seconds of silence>
DevMgr: “Lets wrap this up. Steve, go ahead and make the necessary database changes to make sure the factor is never zero.”
StakeholderJim: “That doesn’t sound right. Add-on items should never have a factor. A value of 1 could screw up the average.”
Dev: “Don’t worry, we’ll know the difference.”
<everyone seems happy and leaves the meeting>
I completely lost any sort of brain power to say anything after Dev said that. All the little voices kept saying were ‘WTF? WTF just happened? No really…W T F just happened!?’ over and over. I still have no idea on how to articulate to anyone with any sort of sense about what happened. Thanks DevRant for letting me rant.15 -
Biggest scaling challenge?
The imaginary scaling issues from clients.
Client : How do you cope with data that's a billion times bigger than our current data set? Can you handle that? How much longer will it take to access some data then?
I could then give a speech about optimizing internal data structures and access algorithms that work with O(log n) complexity, but that wouldn't help, non-tech people will not understand that.
And telling someone, the system will be outdated and hopefully been replaced when that amount of data is reached, would be misinterpreted as "Our system can not handle it".
So the usual answer is: "No problem, our algorithms are optimized so they can handle any amount of data"6