I've found and fixed any kind of "bad bug" I can think of over my career from allowing negative financial transfers to weird platform specific behaviour, here are a few of the more interesting ones that come to mind...

#1 - Most expensive lesson learned

Almost 10 years ago (while learning to code) I wrote a loyalty card system that ended up going national. Fast forward 2 years and by some miracle the system still worked and had services running on 500+ POS servers in large retail stores uploading thousands of transactions each second - due to this increased traffic to stay ahead of any trouble we decided to add a loadbalancer to our backend.

This was simply a matter of re-assigning the IP and would cause 10-15 minutes of downtime (for the first time ever), we made the switch and everything seemed perfect. Too perfect...

After 10 minutes every phone in the office started going beserk - calls where coming in about store servers irreparably crashing all over the country taking all the tills offline and forcing them to close doors midday. It was bad and we couldn't conceive how it could possibly be us or our software to blame.

Turns out we made the local service write any web service errors to a log file upon failure for debugging purposes before retrying - a perfectly sensible thing to do if I hadn't forgotten to check the size of or clear the log file. In about 15 minutes of downtime each stores error log proceeded to grow and consume every available byte of HD space before crashing windows.

#2 - Hardest to find

This was a true "Nessie" bug.. We had a single codebase powering a few hundred sites. Every now and then at some point the web server would spontaneously die and vommit a bunch of sql statements and sensitive data back to the user causing huge concern but I could never remotely replicate the behaviour - until 4 years later it happened to one of our support staff and I could pull out their network & session info.

Turns out years back when the server was first setup each domain was added as an individual "Site" on IIS but shared the same root directory and hence the same session path. It would have remained unnoticed if we had not grown but as our traffic increased ever so often 2 users of different sites would end up sharing a session id causing the server to promptly implode on itself.

#3 - Most elegant fix

Same bastard IIS server as #2. Codebase was the most unsecure unstable travesty I've ever worked with - sql injection vuns in EVERY URL, sql statements stored in COOKIES... this thing was irreparably fucked up but had to stay online until it could be replaced. Basically every other day it got hit by bots ended up sending bluepill spam or mining shitcoin and I would simply delete the instance and recreate it in a semi un-compromised state which was an acceptable solution for the business for uptime... until we we're DDOS'ed for 5 days straight.

My hands were tied and there was no way to mitigate it except for stopping individual sites as they came under attack and starting them after it subsided... (for some reason they seemed to be targeting by domain instead of ip). After 3 days of doing this manually I was given the go ahead to use any resources necessary to make it stop and especially since it was IIS6 I had no fucking clue where to start.

So I stuck to what I knew and deployed a $5 vm running an Nginx reverse proxy with heavy caching and rate limiting linked to a custom fail2ban plugin in in front of the insecure server. The attacks died instantly, the server sped up 10x and was never compromised by bots again (presumably since they got back a linux user agent). To this day I marvel at this miracle $5 fix.

The only technique I know.

Get hired straight out of uni. Project architect disappears right at beginning and I am left as a graduate employee to build a travel booking web app. Learning new front end and backend frameworks by coding them constantly for the next 8 months.

We might actually get this project done!

"Our company encourages cryptocurrency big data agile machine learning, empowerment diversity, celebrate wellness and synergy, unpack creative cloud real-time front-end bleeding edge cross-platform modular success-driven development of digital signage, powered by an unparalleled REST API backend, driven by a neural network tail recursion AI on our cloud based big data linux servers which output real time data to our Wordpress template interactive dynamic website TypeScript applet, with deep learning tensor flow capabilities.

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Dear boss, please give me a more challenging project. I am sick and tired of editing someone else’s HTML and CSS which doesn’t even go through a build process and the JS is basically Jquery. It would be better if no one else can get into my codebase and the project has no relations or anywhere near our flagship product. Please involve some sysadmin tasks that I really want to learn. For front end I want to use React , boss. Or at least ES(6)=>. NodeJS would be nice too but I’m not fussy with the backend language. Even PHP would do. Please give me a genuine problem to solve, anything mathematical, machine learning would be awesome! 🙏🏻🙏🏻🙏🏻

So I'm coming out of one that has a focus on this stack (JS [JQuery after weeks of Vanilla JS drilling in our heads, React], Java, MySQL, Python [Django, Bottle], HTML/CSS, and a few web security concepts (XSS, SQL injections).

The whole course has been 4 months learning, 3 weeks working on a final project. Next week is the presentation, so I think I can safely comment on the course.

We moved fast, but that's to be expected. Lecture in the mornings, exercises in the afternoons, assignments due at the beginning of each week. Constantly working towards it and improving. I have been working pretty hard. We were given some help, but had to get a lot of answers online (based God StackOverflow), but that's part of it.

We touched on some concepts like inheritance in JS, Python and Java, OOP and to be open to concepts we don't know so we should be thirsty for that knowledge.

In my off time, I've begun texting myself Node and really trying to double down on React because it seems useful. I realized I was more drawn to the backend, but I was comfortable in front end as well. (Just don't ask me to design anything, my eye for aesthetics/CSS sorcery is terrible.)

The overall experience has been pretty mixed, but we were mostly unsatisfied. We weren't given then help we were promised. The explanations weren't exactly crystal clear, so we would have to teach ourselves and each other quite a bit. We worked together a lot. Some people really fell behind, some caught up, some flew ahead and thrived. (I'm somewhere between caught up and thrived, I recognize where I stand.)

I'm happy I did a bootcamp, they aren't miracle programs, but they at least kick you into place that you are learning and need to continue to learn. (Just kinda wish I had done a different one.)

Feel free to ask about anything concerning it!

What To Learn?

I'm a beginner in web development and have knowledge about html, css, JavaScript, jQuery, Sass, NodeJS, Express, MongoDB, Passport. You can consider me to be a beginner full stack developer, but I'm confused about what to learn further. There are so many front end frameworks that one can spend his entire life learning them. React, Vue, Angular, Backbone, etc. But I always want to learn backend properly, then there's Rails, PHP, SQL, Python. Can anyone atleast tell me what to learn and why exactly? This thing's making me mad and anxious.

Started new job almost two moths ago..

For almost 3 years I was developing custom themes, plugins, and widget for WordPress using PHP, jQuery/AJAX, and MySQL.

The new company that hired me brought me on as a backend developer to help rebuild their custom PHP Framework, and other web based software/products as their moving toward Google Cloud Platform.

When I started, MVC and OOP was new to me... took a couple weeks to get the hang of things, and understand their system.

Just when I was getting comfortable, I had a task assigned to me that was all NodeJS...

Had a 30 check-in the week I started the Node task, and was feeling pretty beat down because it was all new to me and I wasn’t making a lot of progress, and still not comfortable with Promises yet, and some other ES6 features but finding my way around slowly but surely.

Manager reassured me that I wasn’t going to be fired and it wasn’t unique to myself. Very encouraging to hear, but I’m my own worst critic so it’s frustrating not being able to make progress like I would with PHP projects.

Fast forward to this week, I started to review another task for a feed and found it’s all Ruby! Another language I have no familiarity with... and started to question if I’ll every get the hang of all these languages and be a solid team member...

Not only do I have to get a grasp on NodeJS and Ruby now, but then I’ll also have to get familiar with GCP and whatever else comes along with it...

Oh and I’m using Linux now instead of Windows/ OSX... so there’s that too.. plus the other command line tools the company built, and uses..

I was comfortable developing in PHP and know I needed to take a step and accept this job to move my career forward but it seems like I’m always behind the 8 ball...

Some days I wonder if it was worth staying a Wordpress developer and just focused on learning ReactJS and stay more Front-end than Backend..

I enjoy working with talented people but I don’t like being the low man on the totem pole knowing I don’t have the experience yet.

Does it feel like this for all devs?!?!

I'm in a situation here, I had an idea for an app and I started coding it. Since I'm a front end developer I find it not amusing to do the backend part. I then started to share the idea and such with good classmate (not a coder). I then made him join me on this adventure. After a lot of coding he said he wanted to contribute with something since I'm coding all day and he's not. Then we agreed freelancing the back end part.

Some time later we got a pretty good deal on some Indians doing the whole app. I thought to myself "this feels kinda good!" so we went on with the freelancer.

Days went to months and we finally got the app back. I did a mistake of paying him all the milestones without testing the app in its wholeness, later finding out that one part of the login system didn't work. That lead to a deeper debug to find out that the core function of the app was commented out.. I then wrote the freelancer back with minimal and slow response.

Now the deadline of the app is like in 2 months. If not we miss a whole year.

My classmate knows about this and he's the one who played for the freelancing. Now we have talked about me doing the whole backend myself.

The only issue I have now is that I feel like he's just sitting home doing nothing other than flashing money around and me busting my ass of writing code that I really am not good at. (basically learning more than coding)

But he played a lot of money for this.. So I feel kinda bad for him.

Rip life.

I was talking to a friend about the current state of machine learning through tensorflow and commented about the use of Javascript as a language.

He discarded the idea as he views Javascript as something that should only be used as a frontend technology rather than something to build backends or deep learning models.

I am thorn. I have always liked Javascript but will admit that I have used it mostly in the area of front end with very few backend instances(i did create a full stack intranet app in Express once, major success for the application it was hosting, it was a very basic api which had its own nosql db with no need to interact with the company's relational data, it was perfect for the occasion and still help maintaining it from time to time)

My boi states that node's biggest issue has always been npm and the quality of packages. I always contradict those statements by saying that if one uses community standards and the best packages then one does not need to worry about the quality(i.e mongoose over some unmaintained mongo wrapper etc)

I sometimes catch myself finding that my way of thinking adapts better to JS than it even does Python (which is his preference for deep learning) and whilst there are some beastly packages for python in terms of quality and usefulness such as matplotlib etc that one can do great things with the equivalent JS.

I mean, tensorflow.js came from the same wizards that did tensorflow (obviously) and i find the functional approach of JS to be more on par with how we develop solutions.

I am no deep learning expert, and sadly I have no professional experience with machine learning. But I venture to say that we should not cast aside the great strides that the JS community has done to the language in terms of evolution and tooling. Today's Js is not your grandaddy's Js and thinking that the language is crippled because of early iterations of the language would be severely biased.

What do you guys(maybe someone with professional experience) think of Js as a language for machine learning?

Do you think the language poses something worth considering in terms of tooling and power for ml?

!rant
After 4 - 5 months of learning webD, I am trying to build my first fullstack web application (simple chat one ).

My stack :
FRONTEND:
Vue.js + Materialize

Backend:
Express ( handling routes )
Mongoose/MongoDB ( Database )
Socket.io ( web sockets for real time connection )
JWT

Had dreamt of this 2 months ago where I built a basic front end using html and css, and now porting it to Vue is like a breeze.

Wish me luck and let's hope it doesnot become one of the unfinished projects. ( My university semester exams are coming up , would have to complete this as fast as possible ). I am also learning DSA + STL and aim to learn basic python syntax before holidays so that I can focus my time on ML during them. It's so fucking overloaded that I have my doubts ::((

I have my first developer interview next week. I'm really nervous. Its an interview for both a front end role and a php backend role, and they are hiring 9 developers.
I'm a full stack developer, dot net core backend and learning React.js frontend. My html and CSS knowledge is fine but I don't quite have a grasp of js yet. As for php, I know nothing, but the recruiter said they are looking to train someone and I explained that I enjoy learning, not to mention php is very popular so it's a good tool to have knowledge with.
I've been told to look at their site, so I've written a list of about ten aspects of the site that I like and that I would change. From the lack of interactivity to images being larger than necessary, something that could be optimised.
The interview will be an hour and a half long and I'm shitting myself. Im not a confident person as is, plus I suffer from anxiety. I'm mostly worried about being put on the spot with questions like "tell me your best achievement". I will rehearse the obvious questions this weekend.
Doss anyone have any advice? Good experiences, bad experiences etc.

Being a university student who is about to complete his first year, is being a google certified mobile web specialist worth it?? ( More about my background : I have been into front end developement for around 4 months and this has been my first exposure to " production level coding ". I have been improving my JS skills and am currently learning Vue. I have a fair understanding of backend and am trying to build a full stack app using express, Vue and sockets . I have an interest in algorithms , dsa and machine learning although I an not able to devote my full time on it but hopefully would be able to do it in 2 to 3 months. I also have an interest in Linux and all. ). Please suggest something . Thanks in advance.
PS : I know my interests are very random , but I am just exploring my options and being a freshman , I am confused A lot . So trying to figure out something that will help me in future too

As a total Javascript/node.js noob my biggest take from it this week is that it's a lighter version of the backend while doing a lot of the front end heavy lifting in a programmatic style. It's not a total replacement to ASP.NET MVC or JDBC MVC, it's nowhere near as powerful. But, I could see this being a very good replacement for JSP's and simplifying the front end. I need that because the front end terrifies me more than the backend. The devil you know is sometimes easier.

Still, my first week in node.js and Javascript has been... pleasent. It's simpler and less powerful than static or dynamic typed languages but that doesn't make it bad. 🙂

I am biased though. My first language was C++ and anything is easier/better than C++ 🤣

Front end because I've used it as my starting point. Learning how to make real-time backend api w/ feathersjs at the moment!

Learning Falcon right now. Coming from strong front-end background having learnt Redux, React and stuff,
Falcon is what a backend framework must be! Why do you need templating in backend these days?

Last weekend I started a project with a Angular front end and a WordPress backend.

The front end is for me so I can do the work faster. The backend is for the client that is slow at learning new technology. It's easiest to keep her WordPress setup

It's been a lot of fun setting up the jwt authentication but creating users has been a pain. I'm determined to work through it though.

Has anyone here else tried this? Any tips?

I'm a django/web developer looking to learn some front end techniques like angular or node. anyone interested in learning some backend for teaching some frontend? is this allowed to do here?