Client(On Call): I emailed some query a day before. I got a response too. But, i am not able to find answer of my specific query.

Me: Let me check that for you. Yes, it is there. See the mail carefully.

Client: No. It's not there.

Me: Can you read the whole mail for me?

Client: Sure. *Started Reading* Oh yes. Yes. it is here. *Hangs up the Phone.*

Me: Sigh.

I closed my work laptop yesterday around noon and dumped water on it. I was just so fed up.

Some spilled off onto my desk, though, so i gently moved (read: threw) the offending piece of plastic frustration onto the floor and carefully dried my desk.

On my way to the trash can, i stepped on the laptop. I stepped on it again on the way back, and later, on my way out the door.

I came in to get something half an hour later, and stepped on it again. It remained a stepping stone for the rest of the day, and accrued considerable foot traffic.

I spent the day drinking peach whiskey and playing with my children instead of working on reports. It was a good day.

Don't worry: my laptop still worked this morning, though I declined to.

From my work -as an IT consultant in one of the big 4- I can now show you my masterpiece

INSIGHTS FROM THE DAILY LIFE OF A FUNCTIONAL ANALIST IN A BIG 4 -I'M NOT A FUNCTIONAL ANALYST BUT THAT'S WHAT THEY DO-

- 10:30, enter the office. By contract you should be there at 9:00 but nobody gives a shit
- First task of the day: prepare the power point for the client. DURATION: 15 minutes to actually make the powerpoint, 45 minutes to search all the possible synonyms of RESILIENCE BIG DATA AGILE INTELLIGENT AUTOMATION MACHINE LEARNING SHIT PISS CUM, 1 hour to actually present the document.
- 12:30: Sniff the powder left by the chalks on the blackboards. Duration: 30 minutes, that's a lot of chalk you need to snort.

13:00, LUNCH TIME. You get back to work not one minute sooner than 15.00

- 15:00, conference with the HR. You need to carefully analyze the quantity and quality of the farts emitted in the office for 2 hours at least
- 17:00 conference call, a project you were assigned to half a day ago has a server down.
The client sent two managers, three senior Java developers, the CEO, 5 employees -they know logs and mails from the last 5 months line by line-, 4 lawyers and a beheading teacher from ISIS.
On your side there are 3 external ucraininans for the maintenance, successors of the 3 (already dead) developers who put the process in place 4 years ago according to God knows which specifications. They don't understand a word of what is being said.
Then there's the assistant of the assistant of a manager from another project that has nothing to do with this one, a feces officer, a sys admin who is going to watch porn for the whole conference call and won't listen a word, two interns to make up a number and look like you're prepared. Current objective: survive. Duration: 2 hours and a half.
- 19:30, snort some more chalk for half an hour, preparing for the mail in which you explain the associate partner how because of the aforementioned conference call we're going to lose a maintenance contract worth 20 grands per month (and a law proceeding worth a number of dollars you can't even read) and you have no idea how could this happen
- 20:00, timesheet! Compile the weekly report, write what you did and how long did it take for each task. You are allowed to compile 8 hours per day, you worked at least 11 but nobody gives a shit. Duration: 30 minutes
- 20:30, update your consultant! Training course, "tasting cum and presenting its organoleptic properties to a client". Bearing with your job: none at all. Duration: 90 minutes, then there's half an hour of evaluating test where you'll copy the answers from a sheet given to you by a colleague who left 6 months ago.
- 22:30, CHANCE CARD! You have a new mail from the HR: you asked for a refund for a 3$ sandwich, but the receipt isn't there and they realized it with a 9 months delay. You need to find that wicked piece of paper. DURATION: 30 minutes. The receipt most likely doesn't even exist anymore and will be taken directly from your next salary.
- 23:00 you receive a message on Teams. It's the intern. It's very late but you're online and have to answer. There's an exception on a process which have been running for 6 years with no problems and nobody ever touches. The intern doesn't know what to do, but you wrote the specifications for the thing, 6 years ago, and everything MUST run tonight. You are not a technician and have no fucking clue about anyhing at all. 30 minutes to make sure it's something on our side and not on the client side, and in all that the intern is as useful as a confetto to wipe your ass. Once you're sure it's something on our side you need to search for the senior dev who received the maintenance of the project, call him and solve the problem.
It turns out a file in a shared folder nobody ever touches was unreachable 'cause one of your libraries left it open during the last run and Excel shown a warning modal while opening it; your project didn't like this last thing one bit. It takes 90 minutes to find the root of the problem, you solve it by rebooting one of your machines. It's 01:00.

You shower, watch yourself on the mirror and search for the line where your forehead ends and your hair starts. It got a little bit back from yesterday; the change can't be seen with the naked eye but you know it's there.

You cry yourself to sleep. Tomorrow is another day, but it's going to be exactly like today.

Angelina Lee's resume
Ultra succesful, got spammed by recruiters constantly

Fucking teammate who did not know how to read/write a simple class diagram.
We warned him that he have to study or we just kick his fucking ass out of the team.

He just did nothing. When we had meetings he just stayed at home pretending to have an heart issue needing surgery.
After just 2-3 days he was tagged on FB in a photo shooted a few days earlier where he was riding a bike for a competition.

He skipped another scheduled-a-fucking-week-before meeting saying that he was on a surprise trip, when I called him 5 minutes before meeting start.

In the end we just kick him out because he did nothing. He went to professor talking about some relationship problem in the team and asked him if he could continue the project by himself just forking the ours.

Professor said HELL NO SON OF A BITCH.

But our team learned a precious lesson : choose your team carefully.

What. The. Actual. Fuck.

My co-workers just tried to convince me that the following is a secure password:

"ThisIsASecurePassword2018"

Just... I mean... Why? *sigh*

Their argumentation is based on the new NIST guidelines.

If they've read these guidelines CAREFULLY though... (not only the appendix) it actually states "Don't use words from the dictionary". Passwords like these should even be rejected right away.

I'm coming off a lengthy staff augmentation assignment awful enough that I feel like I need to be rehabilitated to convince myself that I even want to be a software developer.

They needed someone who does .NET. It turns out what they meant was someone to copy and paste massive amounts of code that their EA calls a "framework." Just copy and paste this entire repo, make a whole ton of tweaks that for whatever reason never make their way back into the "template," and then make a few edits for some specific functionality. And then repeat. And repeat. Over a dozen times.

The code is unbelievable. Everything is stacked into giant classes that inherit from each other. There's no dependency inversion. The classes have default constructors with a comment "for unit testing" and then the "real" code uses a different one.

It's full of projects, classes, and methods with weird names that don't do anything. The class and method names sound like they mean something but don't. So after a dozen times I tried to refactor, and the EA threw a hissy fit. Deleting dead code, reducing three levels of inheritance to a simple class, and renaming stuff to indicate what it does are all violations of "standards." I had to go back to the template and start over.

This guy actually recorded a video of himself giving developers instructions on how to copy and paste his awful code.

Then he randomly invents new "standards." A class that reads messages from a queue and processes them shouldn't process them anymore. It should read them and put them in another queue, and then we add more complication by reading from that queue. The reason? We might want to use the original queue for something else one day. I'm pretty sure rewriting working code to meet requirements no one has is as close as you can get to the opposite of Agile.

I fixed some major bugs during my refactor, and missed one the second time after I started over. So stuff actually broke in production because I took points off the board and "fixed" what worked to add back in dead code, variables that aren't used, etc.

In the process, I asked the EA how he wanted me to do this stuff, because I know that he makes up "standards" on the fly and whatever I do may or may not be what he was imagining. We had a tight deadline and I didn't really have time to guess, read his mind, get it wrong, and start over. So we scheduled an hour for him to show me what he wanted.

He said it would take fifteen minutes. He used the first fifteen insisting that he would not explain what he wanted, and besides he didn't remember how all of the code he wrote worked anyway so I would just have to spend more time studying his masterpiece and stepping through it in the debugger.

Being accountable to my team, I insisted that we needed to spend the scheduled hour on him actually explaining what he wanted. He started yelling and hung up. I had to explain to management that I could figure out how to make his "framework" work, but it would take longer and there was no guarantee that when it was done it would magically converge on whatever he was imagining. We totally blew that deadline.

When the .NET work was done, I got sucked into another part of the same project where they were writing massive 500 line SQL stored procedures that no one could understand. They would write a dozen before sending any to QA, then find out that there was a scenario or two not accounted for, and rewrite them all. And repeat. And repeat. Eventually it consisted of, one again, copying and pasting existing procedures into new ones.

At one point one dev asked me to help him test his procedure. I said sure, tell me the scenarios for which I needed to test. He didn't know. My question was the equivalent of asking, "Tell me what you think your code does," and he couldn't answer it. If the guy who wrote it doesn't know what it does right after he wrote it and you certainly can't tell by reading it, and there's dozens of these procedures, all the same but slightly different, how is anyone ever going to read them in a month or a year? What happens when someone needs to change them? What happens when someone finds another defect, and there are going to be a ton of them?

It's a nightmare. Why interview me with all sorts of questions about my dev skills if the plan is to have me copy and paste stuff and carefully avoid applying anything that I know?

The people are all nice except for their evil XEB (Xenophobe Expert Beginner) EA who has no business writing a line of code, ever, and certainly shouldn't be reviewing it.

I've tried to keep my sanity by answering stackoverflow questions once in a while and sometimes turning evil things I was forced to do into constructive blog posts to which I cannot link to preserve my anonymity. I feel like I've taken a six-month detour from software development to shovel crap. Never again. Lesson learned. Next time they're not interviewing me. I'm interviewing them. I'm a professional.

My girlfriend configuring her e-mail account in the app because her phone had to be reset to factory :
-I can't figure out how to do these setting, annoying...
-Oh yeah the imap and smtp servers can be tricky, let me put that
(I Google the settings for her mail provider and put them in)
-It still doesn't work.
-Uuuh, maybe with another security setting, try it.
-This shit still doesn't work, seriously my phone is broken.
-Have you verified the e-mail address and carefully typed the password?
-Yes of course, I've tried it several time
(I take the phone and check all the parameters... During a looooong time... Until it hits me.)
-Hmm... Can you read the e-mail you've entered?
-Yeah, it's my mail, blabla@hotmail.com.
-No can you read it again please?
-It's blabla, why?
-No, can you *spell* your e-mail?
-Yeah it's B-L-A-B-L-A-@-H-O-M-A... Ow shit...
- ¯\_(ツ)_/¯

It was my first time in Berlin. I came as a tourist but started looking for a workplace, with hopes of getting a blue card and continuing work.

I searched online, going through some hiring platforms, and sent out a few messages around. I felt a special connection (I thought I was exactly who they needed), and wrote them a carefully crafted letter of intention alongside my lavish CV.
They got back to me, and I was given this task, to do while at home. I completed it, had a phone interview, and was invited on-site for a face to face interview. Everybody felt warm, I felt a connection. We already talked salary expectations, and all was going great.

They told me they'd get back to me for the next stage. ...
and they actually DID. Yes, they did!
They invited me for a second interview, but this time to prepare a technical topic to present. So I did. I picked one of the 3 topics they offered, which was about performance optimization. I had recently read materials about that, so I felt really empowered.
So far nobody told me what I was supposed to be doing at the new job, I only knew the technologies required, and what the company did for money.
I prepared a thorough presentation, with practical demos of why some things are bad for performance. While I was showing it, many people in the room were learning about this for the first time, which means I did good. The team lead had some extra questions that I wasn't able to answer in full (needed some research), but otherwise it was great.

The CTO then asked me out to lunch, to talk over some more stuff, and we had a general discussion about what drives us, our life story, etc. He said that he'd really like me to be part of the team, and that he's looking forward to working with me.

So I've been at it for almost a month. I've met everyone, got acquainted with the team, knew the biography of some of them, proven my worth, etc. I was ensured with body language, and verbal language that everything was going great. As careful as I was with this kind of stuff, I was positive that I'd get the job. I even started planning my trips, to get the documents ready.

And then I got a message stating the usual stuff "Thank you bla bla bla we don't think we'll need your services". I was shocked, but in good faith I wanted to reply something along the lines "I'm sorry it didn't work out, all the best in finding what you're looking for", but I found out that I was blocked from contacting them.

That's right. Rejected + blocked. After a month of fucking foreplay. I get rejection, even though it hurts. But being blocked?! That's just insane!

Read code, exceptions, comments carefully. Double think before asking. But never hasitate to ask if you are stuck.

Programmer OAth. Just read on a github repo

0. I will only undertake honest and moral work. I will stand firm against any requirement that exploits or harms people.

1. I will respect the learnings of those programmers who came before me, and share my learnings with those to come.

2. I will remember that programming is art as well as science, and that warmth, empathy and understanding may outweigh a clever algorithm or technical argument.

3. I will not be ashamed to say "I don't know", and I will ask for help when I am stuck.

4. I will respect the privacy of my users, for their information is not disclosed to me that the world may know.

5. I will tread most carefully in matters of life or death. I will be humble and recognize that I will make mistakes.

6. I will remember that I do not write code for computers, but for people.

7. I will consider the possible consequences of my code and actions. I will respect the difficulties of both social and technical problems.

8. I will be diligent and take pride in my work.

9. I will recognize that I can and will be wrong. I will keep an open mind, and listen to others carefully and with respect.

So I'm trying to get used to using vim and I've spent a couple of days setting up my vimrc and practising commands and what not.

Come today I'm doing my first proper coding session and my codes sending back weird errors and I can't work out why

Then when I read very carefully I find :w somewhere it's not supposed to be... Of course I'd forgetten to enter normal mode a ton of times and now my code is littered with :wq and :w so I spent a few minutes combing my code to find them all and it all works now.

Am I an elite hacker now?

I've lost hope in my precision at this point:

We've updated our website to have X feature. The X feature was implemented, tested and even had unit tests... The worst part when I've lost hope? Both unit and the actual code had the same mistake in them. What was the mistake? Well...

if($variable = 'something') {}

Yeah... Read it carefully... We've always had the same case and only noticed it after 3 months when it was attempted to extend.

Funny enough, few users were harmed but no actual reports of an issue came to us.

Since then, I'm always triple checking that I have the correct amount of `=` to avoid further fuck-ups

These ignorant comments about arch are starting to get on my nerves.

You ranted or asked help about something exclusive to windows and someone pointed out they don't have that problem in arch and now you're annoyed?

Well maybe it's for good.

Next comes a very rough analogy, but imagine if someone posts "hey guys, I did a kg of coke and feeling bad, how do I detox?"

It takes one honest asshole to be like "well what if you didn't do coke?".

Replace the coke with windows.
Windows is a (mostly) closed source operating system owned by a for profit company with a very shady legal and ethical history.

What on earth could possibly go wrong?

Oh you get bsod's?
The system takes hours to update whenever the hell it wants, forces reboot and you can't stop it?
oh you got hacked because it has thousands of vulnerabilities?
wannacry on outdated windows versions paralyzed the uk health system?

oh no one can truly scrutinize it because it's closed source?

yet you wonder why people are assholes when you mention it? This thing is fucking cancer, it's hundreds of steps backwards in terms of human progress.

and one of the causes for its widespread usage are the savage marketing tactics they practiced early on. just google that shit up.

but no, linux users are assholes out to get you.

and how do people react to these honest comments? "let's make a meme out of it. let's deligitimize linux, linux users and devs are a bunch of neckbeards, end of story, watch this video of rms eating skin off his foot on a live conference"

short minded idiots.

I'm not gonna deny the challenges or limitations linux represents for the end user.

It does take time to learn how to use it properly.
Nvidia sometimes works like shit.
Tweaking is almost universally required.
A huge amount of games, or Adobe/Office/X products are not compatible.
The docs can be very obscure sometimes (I for one hate a couple of manpages)

But you get a system that:
* Boots way faster
* Is way more stable
* Is way way way more secure.
* Is accountable, as in, no chance to being forced to get exploited by some evil marketing shit.

In other words, you're fucking free.
You can even create your own version of the system, with total control of it, even profit with it.

I'm not sure the average end user cares about this, but this is a developer forum, so I think in all honesty every developer owes open source OS' (linux, freebsd, etc) major respect for being free and not being corporate horseshit.

Doctors have a hippocratic oath? Well maybe devs should have some form of oath too, some sworn commitment that they will try to improve society.

I do have some sympathy for the people that are forced to use windows, even though they know ideally isn't the ideal moral choice.
As in, their job forces it, or they don't have time or energy to learn an alternative.

At the very least, if you don't know what you're talking about, just stfu and read.

But I don't have one bit of sympathy for the rest.

I didn't even talk about arch itself.
Holy fucking shit, these people that think arch is too complicated.

What in the actual fuck.

I know what the problem is, the arch install instructions aren't copy paste commands.
Or they medium tutorial they found is outdated.

So yeah, the majority of the dev community is either too dumb or has very strong ADD to CAREFULLY and PATIENTLY read through the instructions.

I'll be honest, I wouldn't expect a freshman to follow the arch install guide and not get confused several times.
But this is an intermediate level (not megaexpert like some retards out there imply).

Yet arch is just too much. That's like saying "omg building a small airplane is sooooo complicated". Yeah well it's a fucking aerial vehicle. It's going to be a bit tough. But it's nowhere near as difficult as building a 747.

So because some devs are too dumb and talk shit, they just set the bar too low.

Or "if you try to learn how to build a plane you'll grow an aviator neckbeard". I'll grow a fucking beard if I want too.

I'm so thankful for arch because it has a great compromise between control and ease of install and use.

When I have a fresh install I only get *just* what I fucking need, no extra bullshit, no extra programs I know nothing about or need running on boot time, and that's how I boot way faster that ubuntu (which is way faster than windows already).

Configuring nvidia optimus was a major pain in the ass? Sure was, but I got it work the way I wanted to after some time.

Upgrading is also easy as pie, so really scratching my brain here trying to understand the real difficult of using arch.

In follow up to my last rant.....

A friend just informed me that I should enable dhcpcd to get networking in arch...

I was typing dchpd......

why don’t I read things more carefully

I’ve been at this for hours and I just installed ubuntu alongside arch because I need my laptop for tomorrow. Ugh

Below is a transcript from work Slack today. Only the names and some code are changed. It ended up causing a bit of drama. DevRanters, what do you take from this?

---

Delivery Lead:
Hey Gang. What's the blocker for FEATURE-123?

Dev1:
FEATURE-122 crashed on iOS app when viewing Feature Introduction page.

Teach Lead:
I've talked about this with Dev1 on a side channel.
And diagnosed the stack trace.
It looks like there is/was some bad handling of a List in the Feature Introduction view logic.
But this is confined to changes that Dev2 is still working on.
(It's not present in master)
Dev2, what's your current position on this?

Dev2:
I have tested at my end with Dev1 but it seems to be working fine

Tech Lead:
There is a race condition related to the use of someList.first()
My guess is that theres a Flow of those lists defined, with an initial value of emptyList
And that on your machine, that Flow is updating with a new value quickly enough that it doesn't matter.
But on Dev1's, for whatever reason, it doesn't get there in time, hits the empty list and falls over.
The logic that's performing the first() needs to gracefully handle empty lists as well.

Dev2:
Where is that logic called?

Tech Lead:
Here's the stack trace Dev1 provided in our conversation earlier:
Caused by: kotlin.NoSuchElementException: List is empty.
...
at 3 iosApp 0x00000000 kfun:kotlin.NoSuchElementException#<init>(kotlin.String?){} + 00
at 4 iosApp 0x0000000 kfun:kotlin.collections#first@kotlin.collections.List<0:0>(){0§<kotlin.Any?>}0:0 + 000
...
at 9 iosApp 0x0000000 kfun:kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(kotlin.Result<kotlin.Any?>){} + 0000

This line:
kfun:kotlin.collections#first@kotlin.collections.List<0:0>()
...says that it's first() being called on an empty list.

Dev1:
FYI: Dev3/Dev4/myself are seeing the same issue with the same stack-trace above.

Tech Lead:
So Dev2, have you introduced such a call?
Because I checked master branch and there isn't one, in that version of the file.
Ok, I'll check your working branch Dev2
...
Yes you have here:
var processed1 = someList.first()
var processed2 = someList.first()
...
Lines 123, 124.
Solution looks really straightforward guys.

Dev2:
Okay, I will fix that and push the change

Tech Lead:
Check if someList is empty and allow for generating / handling null processedValues in the view.

Now; I'm going to be straight with you here.
This issue has been discussed over several hours today.
I expect that either one of you could have gone through the process I did in the last 10 minutes above, and resolved it in the same way :point_up:

Dev2:
I went on a break and it's not reproducible on my machine

Tech Lead:
I didn't reproduce it on mine either.

Dev1:
Dev2 and myself are now on sharing screen to sort this issue out. Hope to update back later.

Tech Lead:
<Screen shot of diff with changed code>
:point_up: That change should do it.

Dev2:
Already have pushed the change.

Tech Lead:
...just seen it, is good - same approach :ok_hand:
Dev1 please let us know when tested on your machine.

Dev1:
That does it. It fixes the issues. Thank you, Dev2. I will pick it off from here.

Tech Lead:
Glad to hear it guys.

Dev1:
I have to say this that it is not because we are not working on the issue - Dev2 and myself (together with Dev3/Dev4) have been on this issue all this morning. It just difficult to connect the dot when it wasn't reproducable on Dev2's machine. I brought the issue up because I wanted to switch to working on other tickets while waiting for this to resolve. Still thank you largely for Dev2's work and your keen eyes that spot and resolve the issue quickly.

Tech Lead:
Noted Dev1.
I think the take-away has to be to read the stack-trace carefully... don't worry - we've all been guilty of not reading the error in full, at some point.
The stack trace said that the 'first' element is being referenced from an empty list - that's just logically impossible, right?
Looking for that call to first, we saw it wasn't in the code before, and is after (two of them, in fact).
So then we ask ourselves, how can we deal with an empty list - and then solution almost presents itself.
It didn't really take reproduction of the error to resolve.
Maybe working with a new tech stack creates an anxiety that every issue faced will have a complex solution related to that stack; but I think you'll agree, this particular issue really just required a deep breath and your trusty 'debugging skills 101'... don't lose them! :smiling_face:

Reading documentation carefully is cool.
If i did that yesterday i would know that react sees env vars started with REACT_APP_
Instead that i was trying to figure out for 3 hours what is wrong with my docker compose file.
Read documentation

Always read the Stack Overflow thread carefully otherwise, you will'be the one asking a question next time.

So I figure since I straight up don't care about the Ada community anymore, and my programming focus is languages and language tooling, I'd rant a bit about some stupid things the language did. Necessary disclaimer though, I still really like the language, I just take issue with defense of things that are straight up bad. Just admit at the time it was good, but in hindsight it wasn't. That's okay.

For the many of you unfamiliar, Ada is a high security / mission critical focused language designed in the 80's. So you'd expect it to be pretty damn resilient.

Inheritance is implemented through "tagged records" rather than contained in classes, but dispatching basically works as you'd expect. Only problem is, there's no sealing of these types. So you, always, have to design everything with the assumption that someone can inherit from your type and manipulate it. There's also limited accessibility modifiers and it's not granular, so if you inherit from the type you have access to _everything_ as if they were all protected/friend.

Switch/case statements are only checked that all valid values are handled. Read that carefully. All _valid_ values are handled. You don't need a "default" (what Ada calls "when others" ). Unchecked conversions, view overlays, deserialization, and more can introduce invalid values. The default case is meant to handle this, but Ada just goes "nah you're good bro, you handled everything you said would be passed to me".

Like I alluded to earlier, there's limited accessibility modifiers. It uses sections, which is fine, but not my preference. But it also only has three options and it's bizarre. One is publicly in the specification, just like "public" normally. One is in the "private" part of the specification, but this is actually just "protected/friend". And one is in the implementation, which is the actual" private". Now Ada doesn't use classes, so the accessibility blocks are in the package (namespace). So guess what? Everything in your type has exactly the same visibility! Better hope people don't modify things you wanted to keep hidden.

That brings me to another bad decision. There is no "read-only" protection. Granted this is only a compiler check and can be bypassed, but it still helps prevent a lot of errors. There is const and it works well, better than in most languages I feel. But if you want a field within a record to not be changeable? Yeah too bad.

And if you think properties could fix this? Yeah no. Transparent functions that do validation on superficial fields? Nah.

The community loves to praise the language for being highly resilient and "for serious engineers", but oh my god. These are awful decisions.

Now again there's a lot of reasons why I still like the language, but holy shit does it scare me when I see things like an auto maker switching over to it.

The leading Ada compiler is literally the buggiest compiler I've ever used in my life. The leading Ada IDE is literally the buggiest IDE I've ever used in my life. And they are written in Ada.

Side note: good resilient systems are a byproduct of knowledge, diligence, and discipline, not the tool you used.

In last episode of "How SystemD screwed me over", we talked about Systemd's PrivateTMP and how it stopped me from generating SSL certificates.

In today's episode - SystemD vs CGroups!

Mister Pottering and his team apparently felt that CGroups are underused (As they can be quite difficult to set up), and so decided to integrate them into SystemD by default. As well as to provide a friendlier interface to control their values.

One can read about these interactions in the manual page "systemd.resource-control"

All is cool so far. So what happened to me today?

Imagine you did a major system release upgrade of a production server, previously tested on a standalone server. This upgrade doesn't only upgrade the distribution however, it also includes the switch from SysVInit to SystemD. Still, everything went smooth before, nothing to worry now then, right? Wrong.

The test server was never properly stress-tested. This would prove to be an issue.

When the upgrade finishes, it is 4 AM. I am happy to go to bed at last. At 6 AM, however, I am woken up again as the server's webservices are unavailable, and the machine is under 100% CPU load. Weird, I check htop and see that Apache now eats up all 32 virtual cores. So I restart it, casting it off to some weird bug or something as the load returns to normal.

2 hours later, however, the same situation occurs. This time, I scour all the logs I can, and find something weird - Many mentions that Apache couldn't create a worker thread? That's weird.

Several hours of research and tinkering later, I found out the following:
1 - By default, all processes of a system that runs SystemD are part of several CGroups. One of these CGroups is the PID CGroup, meant to stop a runaway process from exhausting all PIDs/TIDs of a system.

This limit is, by default, set to a certain amount of the total available PIDs. If a process exhausts this limit, it can no longer perform operations like fork().

So now, I know the how and why, but how should I solve this? The sanest option would be to get a rough estimate of just how many threads the Apache webserver might need. This option, though, is harder, than apparent. I cannot just take the MaxRequestsWorkers number... The instance has roughly double the amount of threads already. The cause being, as I found out, the HTTP/2 module, which spawns additional threads that do not count towards this limit. So I have no idea what limit to set.

Or I could... Disable the limit for just the webserver via the TasksAccounting switch. I thought this would work. And it did seem to... Until I ran out of TIDs again - Although systemctl status apache2.service no longer reported the number of tasks or a task limit of the process, the PID CGroup stayed set to the previous limit. Later I found out that I can only really disable the Task Accounting for all the units of a given slice and its parents.

This, though, systemctl somewhat didn't make apparent (And I skimmed the manual, that part was my fault)

So... The only remaining option I had was to... Just set the limit to infinite. And that worked, at last.

It took me several hours to debug this issue. And I once again feel like uninstalling systemd again, in favor of sysvinit.

What did I learn? RTFM, carefully, everything is important, it is not enough to read *half* the paragraph of a given configuration option...

Oh, and apache + http/2 = huge TID sink.

Aaaah the joy of carefully crafting and testing extensively on multiple aspects (code, UX, compatibility) your own craft...

... Only to get "IT DOESN'T WORK ON MY MACHINE LOL"

They didn't even read the very simple instructions of "double click on that exe"

Today we all opened santa claus holiday gifts at the job. we were told to buy each other small gifts based on questionnaire that we filled. Some girl bought me and i bought her

I have never seen someone put in so much effort to buy so many, such detailed gifts for a person they have not even met, personalized to my questionnaire that i filled up...

She bought me a book. Candies. Letters. Socks. Drinks. Spongebob chocolate eggs. About 15 different (but not unique) items in total. She even wrote in the first page of the book how carefully she took the time to find a fun book to read and not choose a random book just to buy a book

And i bought her a figure of santa claus with cupcakes, as in santa claus brought her cupcakes (2 items total)

I feel so bad. I hate it so much when someone else puts in more effort for me than i give in return. I feel ashamed. I didnt take this seriously at all. I cant stop thinking about this. Its making me feel so bad. Im feeling beyond terrible. She said she was happy and grateful for what i bought but I know what i bought is nothing compared to what she bought

How do i live with this moving on forward

First and foremost, students should be carefully taught the logic and mentality behind programming. Most of the time I see that the introductory programming courses waste so much energy in teaching the language itself. So students kinda just get fucked cause many people end up ending the course without having actually gained the "programming perspective".
Stop teaching pointers and lambdas and even leave the object oriented stiff till later. If a student doesn't know why we use a For loop then how can they learn anything else.
I believe once that thing in your brain clicks about programming, everything goes smooth from there... kinda :P

Second of all, and this pertains mainly to the engineering and science disciplines.
We need a fundamental and strong mathematical foundation. And no I don't mean taking fucking double integrals. Teach us Linear Algebra, Graph theory, the properties of matrices, and Probability theory.
One of the things I suffered from most and regret in university is having a weak foundation in math and having to spend more time catching myself up to speed.
It's so annoying reading a paper on a new algorithm or method and feeling like an idiot because I can't understand what magic these people did.

Numerical Methods...
Ok this is more deeper, maybe a 2nd year course.
But this is something we take for granted.
Computers don't magically add and subtract and multiply.
They fuck up.
And it'll bite you in the ass if you're not even aware that the computer we all love so much isn't as perfect as we think

Some hardware knowledge.
Probably a basic embedded systems course with arduinos
just so you can get a feel for how our beautiful software actually makes those electrons go weeeeeeeee

And finally
Practice practice
Projects projects
like honestly
just give me the internet and some projects
Ill learn everything else
Projects are the best motivation
I hate this purely theoretical approach
where we memorize or read code and write these stupid exams
Test what we are capable off
make us do projects that take sleepless nights and litres of coffee
And judge our methods, documentation, team work, and output

Team work skills and tools (VCS, communicating, project management, etc.)

Documentation and Reporting
Properly
:)
maybe even with LaTeX :D

Yeah that's the gist of whats on my mind at the moment regarding an ideal computer science education
At least the foundations
The rest I leave it to the next dude.

I've found a bug in our api. Reading documentation for the external class we're using and see "please read these notes carefully". I think I've found where the problem is going to be...

Read. Everything. CAREFULLY.

And do some research if needed.

Books are there for a reason.

Seems pretty obvious, uh?

I always refuse to read the entire documentation carefully then 2 hours later regret skimming through it coz as expected, i miss the fucking obvious and end up wasting my time. You'd think by now i would learn. It must be madness really.

Lets say you used a dating app. It explicitly told you "please do not share any personally identifiable information when chatting with any boy/girl with this dating app because your chat will be stored and processed in our server to improve the recommendation algorithm of potential dates and autocompleting your flirty talk to increase your successful rate." at the beginning of the app, but you didn't read carefully and clicked "agree". After a while, you noticed the dating app already stored all your private chat in their server for machine learning.

Although legally I believe that dating app would still be GDPR compliant,
the question is, will you continue using that dating app or not?