Best code performance incr. I made?

Many, many years ago our scaling strategy was to throw hardware at performance problems. Hardware consisted of dedicated web server and backing SQL server box, so each site instance had two servers (and data replication processes in place)

Two servers turned into 4, 4 to 8, 8 to around 16 (don't remember exactly what we ended up with). With Window's server and SQL Server licenses getting into the hundreds of thousands of dollars, the 'powers-that-be' were becoming very concerned with our IT budget. With our IT-VP and other web mgrs being hardware-centric, they simply shrugged and told the company that's just the way it is.

Taking it upon myself, started looking into utilizing web services, caching data (Microsoft's Velocity at the time), and a service that returned product data, the bottleneck for most of the performance issues. Description, price, simple stuff. Testing the scaling with our dev environment, single web server and single backing sql server, the service was able to handle 10x the traffic with much better performance.

Since the majority of the IT mgmt were hardware centric, they blew off the results saying my tests were contrived and my solution wouldn't work in 'the real world'. Not 100% wrong, I had no idea what would happen when real traffic would hit the site.

With our other hardware guys concerned the web hardware budget was tearing into everything else, they helped convince the 'powers-that-be' to give my idea a shot.

Fast forward a couple of months (lots of web code changes), early one morning we started slowly turning on the new framework (3 load balanced web service servers, 3 web servers, one sql server). 5 minutes...no issues, 10 minutes...no issues,an hour...everything is looking great. Then (A is a network admin)...
A: "Umm...guys...hardly any of the other web servers are being hit. The new servers are handling almost 100% of the traffic."
VP: "That can't be right. Something must be wrong with the load balancers. Rollback!"
A:"No, everything is fine. Load balancer is working and the performance spikes are coming from the old servers, not the new ones. Wow!, this is awesome!"
<Web manager 'Stacey'>
Stacey: "We probably still need to rollback. We'll need to do a full analysis to why the performance improved and apply it the current hardware setup."
A: "Page load times are now under 100 milliseconds from almost 3 seconds. Lets not rollback and see what happens."
Stacey:"I don't know, customers aren't used to such fast load times. They'll think something is wrong and go to a competitor. Rollback."
VP: "Agreed. We don't why this so fast. We'll need to replicate what is going on to the current architecture. Good try guys."
<later that day>
VP: "We've received hundreds of emails complementing us on the web site performance this morning and upset that the site suddenly slowed down again. CEO got wind of these emails and instructed us to move forward with the new framework."

After full implementation, we were able to scale back to only a few web servers and a single sql server, saving an initial $300,000 and a potential future savings of over $500,000. Budget analysis considering other factors, over the next 7 years, this would save the company over a million dollars.

At the semi-annual company wide meeting, our VP made a speech.

VP: "I'd like to thank everyone for this hard fought journey to get our web site up to industry standards for the benefit of our customers and stakeholders. Most of all, I'd like to thank Stacey for all her effort in designing and implementation of the scaling solution. Great job Stacy!"
<hands her a blank white envelope, hmmm...wonder what was in it?>

A few devs who sat in front of me turn around, network guys to the right, all look at me with puzzled looks with one mouth-ing "WTF?"

Next week I'm starting a new job and I kinda wanted to give you guys an insight into my dev career over the last four years. Hopefully it can give some people some insight into how a career can grow unexpectedly.

While I was finishing up my studies (AI) I decided to talk to one of these recruiters and see what kind of jobs I could get as soon as I would be done. The recruiter immediately found this job with a Java consultancy company that also had a training aspect on the side (four hours of training a week).

In this job I learned a lot about many things. I learned about Spring framework, clean code, cloud deployment, build pipelines, Microservices, message brokers and lots more.

As this was a consultancy company, I was placed at different companies. During my time here I worked on two different projects.
The first was a Microservices project about road traffic data. The company was a mess, and I learned a lot about company politics. I think I never saw anything I built really released in my 16 months there.

I also had to drive 200km every day for this job, which just killed me. And after far too long I was finally moved to the second company, which was much closer.

The second company was a fintech startup funded by a bank. Everything was so much better than the traffic company. There was a very structured release schedule, with a pretty okay scrum implementation. Every team had their own development environment on aws which worked amazingly. I had a lot of fun at this job, with many cool colleagues. And all the smart people around me taught me even more about everything related to working in software engineering.

I quit my job at the consultancy company, and with that at the fintech place, because I got an opportunity I couldn't refuse. My brother was working for Jordan Belfort, the Wolf of Wallstreet, and he said they needed a developer to build a learning platform. So I packed my bags and flew to LA.

The office was just a villa on the beach, next to Jordan's house. The company was quite small and there were actually no real developers. There was a guy who claimed to be the cto of the company, but he actually only knew how to do WordPress and no one had named him cto, which was very interesting.
So I sat down with Jordan and we talked about the platform he wanted to build. I explained how the things he wanted would eventually not be able with WordPress and we needed to really start building software and become a software development company. He agreed and I was set to designing a first iteration of the platform.
Before I knew it I was building the platform part by part, adding features everywhere, setting up analytics, setting up payment flows, monitoring, connecting to Salesforce, setting up build pipelines and setting up the whole aws environment. I had to do everything from frontend to the backest of backends. Luckily I could grow my team a tiny bit after a while, until we were with four. But the other three were still very junior, so I also got the task of training them next to developing.
Still I learned a lot and there's so much more to tell about my time at this company, but let's move forward a bit.

Eventually I had to go back to the Netherlands because of reasons. I still worked a bit for them from over here, but the fun of it was gone without my colleagues around me, so I quit last September.

I noticed I was all burned out, had worked far too much, so I decided to take a few months off and figure out what I wanted to do with my life. I even wondered whether I wanted to stay in programming.

Fast forward to last few weeks. I figured out I actually did want to work in software still, but now I would focus on getting the right working circumstances. No more driving 3 hours every day, no more working 12 hours every day. Just work close to home and find a company with the right values.
So I started sending out resumes and I gave one recruiter the chance to arrange some interviews too. I spoke to 7 companies in the span of one week. And they were all very interested. Eventually I narrowed it down to 2 companies and asked them for offers. And the company that actually had my preference offered me significantly more than I asked for, which settled the deal.

So tomorrow I'm officially signing with them, and starting next week I'll be developing in Kotlin, diving into functional programming and running our code in serverless environments. I'm very excited!

At the institute I did my PhD everyone had to take some role apart from research to keep the infrastructure running. My part was admin for the Linux workstations and supporting the admin of the calculation cluster we had (about 11 machines with 8 cores each... hot shit at the time).

At some point the university had some euros of budget left that had to be spent so the institute decided to buy a shiny new NAS system for the cluster.

I wasn't really involved with the stuff, I was just the replacement admin so everything was handled by the main admin.

A few months on and the cluster starts behaving ... weird. Huge CPU loads, lots of network traffic. No one really knows what's going on. At some point I discover a process on one of the compute nodes that apparently receives commands from an IRC server in the UK... OK code red, we've been hacked.

First thing we needed to find out was how they had broken in, so we looked at the logs of the compute nodes. There was nothing obvious, but the fact that each compute node had its own public IP address and was reachable from all over the world certainly didn't help.
A few hours of poking around not really knowing what I'm looking for, I resort to a TCPDUMP to find whether there is any actor on the network that I might have overlooked. And indeed I found an IP adress that I couldn't match with any of the machines.

Long story short: It was the new NAS box. Our main admin didn't care about the new box, because it was set up by an external company. The guy from the external company didn't care, because he thought he was working on a compute cluster that is sealed off behind some uber-restrictive firewall.

So our shiny new NAS system, filled to the brink with confidential research data, (and also as it turns out a lot of login credentials) was sitting there with its quaint little default config and a DHCP-assigned public IP adress, waiting for the next best rookie hacker to try U:admin/P:admin to take it over.

Looking back this could have gotten a lot worse and we were extremely lucky that these guys either didn't know what they had there or didn't care.

Not a dev question but a cultural question for any of the German devs I’ve seen post here.

My American daughter is living in Germany on an exchange student program. She’s frustrated right now because her host dad and host brother are being really rude and impatient with her over her difficulties with speaking the language. She currently writes it better than she speaks but that and her efforts to keep trying don’t seem to matter to them. This conflict spills over into other social interactions. They constantly berate and make fun of her over everything. The host mom and host sister are nicer and more patient. But they also have to put up with this boorish behavior from the males.

On a train ride home, my daughter was sexually propositioned no less than three times in one hour by three different men. And at festivals she went to where there was lots of drinking, it was even worse.

A German exchange student we once had living with us here in the US regularly broke program rules, slept around, and even downloaded child porn on our network (highly illegal and alarming). My wife was the coordinator for many years to govern the students who came here from many countries and we struggle to think of any but one or two German boys who acted like gentlemen toward ladies.

So is it just a “German guy” thing and commonly accepted in the culture? Or is this type of behavior generally frowned upon and these guys are just in a minority of jerks that we keep having the bad luck of running into?

I know the same question can be and is often asked about American men, too. But I’m more interested in knowing how Germans view Germans who act this way.