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So, you start with a PHP website.
Nah, no hating on PHP here, this is not about language design or performance or strict type systems...
This is about architecture.
No backend web framework, just "plain PHP".
Well, I can deal with that. As long as there is some consistency, I wouldn't even mind maintaining a PHP4 site with Y2K-era HTML4 and zero Javascript.
That sounds like fucking paradise to me right now. 😍
But no, of course it was updated to PHP7, using Laravel, and a main.js file was created. GREAT.... right? Yes. Sure. Totally cool. Gotta stay with the times. But there's still remnants of that ancient framework-less website underneath. So we enter an era of Laravel + Blade templates, with a little sprinkle of raw imported PHP files here and there.
Fine. Ancient PHP + Laravel + Blade + main.js + bootstrap.css. Whatever. I can still handle this. 🤨
But then the Frontend hipsters swoosh back their shawls, sip from their caramel lattes, and start whining: "We want React! We want SPA! No more BootstrapCSS, we're going to launch our own suite of SASS styles! IT'S BETTER".
OK, so we create REST endpoints, and the little monkeys who spend their time animating spinners to cover up all the XHR fuckups are satisfied. But they only care about the top most visited pages, so we ALSO need to keep our Blade templated HTML. We now have about 200 SPA/REST routes, and about 350 classic PHP/Blade pages.
So we enter the Era of Ancient PHP + Laravel + Blade + main.js + bootstrap.css + hipster.sass + REST + React + SPA 😑
Now the Backend grizzlies wake from their hibernation, growling: We have nearly 25 million lines of PHP! Monoliths are evil! Did you know Netflix uses microservices? If we break everything into tiny chunks of code, all our problems will be solved! Let's use DDD! Let's use messaging pipelines! Let's use caching! Let's use big data! Let's use search indexes!... Good right? Sure. Whatever.
OK, so we enter the Era of Ancient PHP + Laravel + Blade + main.js + bootstrap.css + hipster.sass + REST + React + SPA + Redis + RabbitMQ + Cassandra + Elastic 😫
Our monolith starts pooping out little microservices. Some polished pieces turn into pretty little gems... but the obese monolith keeps swelling as well, while simultaneously pooping out more and more little ugly turds at an ever faster rate.
Management rushes in: "Forget about frontend and microservices! We need a desktop app! We need mobile apps! I read in a magazine that the era of the web is over!"
OK, so we enter the Era of Ancient PHP + Laravel + Blade + main.js + bootstrap.css + hipster.sass + REST + GraphQL + React + SPA + Redis + RabbitMQ + Google pub/sub + Neo4J + Cassandra + Elastic + UWP + Android + iOS 😠
"Do you have a monolith or microservices" -- "Yes"
"Which database do you use" -- "Yes"
"Which API standard do you follow" -- "Yes"
"Do you use a CI/building service?" -- "Yes, 3"
"Which Laravel version do you use?" -- "Nine" -- "What, Laravel 9, that isn't even out yet?" -- "No, nine different versions, depends on the services"
"Besides PHP, do you use any Python, Ruby, NodeJS, C#, Golang, or Java?" -- "Not OR, AND. So that's a yes. And bash. Oh and Perl. Oh... and a bit of LUA I think?"
2% of pages are still served by raw, framework-less PHP.32 -
Internet: YOU are nothing without me.
My phone: Th..That's not true! She cc..can make calls ww..ithout you...and ss...send texts. Sh..Sh..She plays offf..offline games sometimes and has ddd..downloaded music to her storage that she could llii.. listen to and has a sshh..shit load of memes stocked that she sss..sometimes laughs at. I AM usef...ffuul :-/
Internet *lighting up a cigarette*: hahhaa! You can survive without me. If this were 10 YEARS ago! There's not a slightest chance, today.
My phone *starts sobbing*: sh..shut up sshhhuut uu..up.
Internet *blowing smoke rings*: you think you're the ONLY device she owns?? She has too many of them, but guess who is connected to all those devices! ME! She can't function without me. Hell, the world can't function without ME!
Electricity *rubbing it's eyes from sleep* - what's all that noise??
Phone: 😶
Internet: 😶
Phone: 🙂
(I'm about to fall asleep and there's no power right now. Back up ain't working. Life sucks)5 -
As a consultant, you get tasked with a variety of stuff. Last few weeks been struggling to maintain an old C++ application that was written by a complete tool of an a$$hole with zero knowledge on how to write maintainable and production quality code. It would hardly run without a crash. First it was a challenge I had to accept, but as I stabilized the code and just fell over even more traps, I had to admit defeat and review my approach.
Rewrite is something I would choose last, but this one ticked all the marks worthy of a rewrite. So, the customer is a very friendly researcher and gladly spent 15 hours with me explaining all the math and concepts - just a delight for a programmer to have such a customer. Two days in, with a DDD approach - a functional, more precise, faster and stable application.
Sometimes there is no rant to share, it's rare to have that perfect communication with a customer that is so dedicated that he spends so much time teaching you his speciality and actually understand your approach. DDD was really a lifesaver here, by using it's key concepts and ubiquitous language. The program is essentially 8000 lines of math, but wrapping it up with value objects and strong domain models made me understand his domain and him mine. It also allowed me to parallelize the computations, giving me a huge performance boost. Textbook approach, there will not be many like this!4 -
A colleague of mine had to debug performance problems in a foreign, proprietary application that is ancient.
To be crystal clear: Only reason that thing exists is because some old geezers fear change.
Asked me for help cause it's an _ancient_ MS SQL server that is luckily running on hardware owned by us.
Finding the credentials was already a funny task.
We had to access the vault (not joking here, we have a physical vault for storing sensitive data and critical backups), grab a folder and find the necessary data cause no one ever dares to touch that thing.
The application is btw for a sort of ERP / inventory system that is used in some ancient shops not yet migrated...
Yeah. Story speaks for itself.
Anyway, after dusting off ourselves, we were able to connect.
Was a bit ... Interesting. Everything's in german. The worst kind of german.
After looking at the first tables, I started giggling.
My colleague knew immediately that this was a sign of danger (insert Simpson meme here), raised his eyebrows and asked "How bad is it....".
Me, still giggling, "lemme take a further look, this is gold".
*long sigh from the colleague*
Well... It ended with me putting my hands in front of my eyes, turning around and saying: "I cannot look at it anymore, it hurts too much...."
To summarize:
- German table names
- When a table exceeded 300 plus columns, they added another table with the same plus suffix "_ddd"… where ddd is an zero filled integer sequence like 001
- To join this mess, they created views... Named "generator" - Sequence Number ... Some had the beginning of table names appended, which doesn't make it less confusing.
- the process list was listing queries running longer than 5 mins.
Which isn't at all surprising when generating carrtesian products of N tables with left join.
I've seen shit.... I've seen a lot of shit.
But that shit scared me.1 -
My boss insists in develop the most unmaintainable ways possible like hard coding everything... EVERYTHING....
DDD (despair driven design)
😵😨5 -
Our teacher just told us to share our code via drive or dropbox or something like that, and I was there like "hey ever heard of git?????"8
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"Let the developers consider a conceptual design,” the King said, for about the twentieth time that day._
“No, no!” said the Queen. “Tests first—design afterwards.”
“Stuff and nonsense!” said Alice loudly. “The idea of writing the tests first!”
“Hold your tongue!” said the Queen, turning purple. “How much code have you written recently, anyway?” she sneered.
“I won’t,” said the plucky little Alice. “Tests shouldn’t drive design, design should drive testing. Tests should verify that your code works as it was designed, and that it meets the customer’s requirements, too,” she added, surprised by her own insight. “And when you drive your tests from a conceptual design, you can test smarter instead of harder.”4 -
Got these from the GitHub stand at DDD Sydney..
They are really cool and can't wait to put them on my SurfaceBook 🤘🤘🤘
1 -
Hmm. So have you ever argued in a job interview? Like really standing your ground? In a technical interview?
Today I had a live coding session with a company I'm interested in. The developer was giving me tasks to evolve the feature on and on.
Everything was TDD. Splendid!
However at one point I had to test if the outcome of the method call is random. What I did is basically:
```
Provider<String> provider = new SomeProvider("aaa", "bbb", "ccc", "ddd", "eee", "fff")
for(int i=0; i<100; i++) {
String str = provider.get();
map.put(str, incrementCount(str));
}
Set<Integer> occurences = new HashSet(map.values());
occurences.removeIf(o -> o.equals(occurences.get(0)));
assertFalse(occurences.empty());
```
and I called it good enough, since I cannot verify true randomness.
But the dev argued that this is not enough and I must verify whether the output is truly random or not, and the output (considering the provider only has a finite set of values to return) occurences are almost equal (i.e. the deviation from median is the median itself).
I argued this is not possible and it beats the core principle of randomness -- non-determinism. Since if you can reliably test whether the sequence is truly random you must have an algorithm which determines what value can or cannot be next in the sequence. Which means determinism. And that the (P)RNG is then flawed. The best you can do is to test whether randomness is "good enough" for your use case.
We were arguing and he eventually said "alright, let's call it a good enough solution, since we're short on time".
I wonder whether this will have adverse effect my evaluation . So have you ever argued with your interviewer? Did it turn out to the better or to the worse?
But more importantly, was I right? :D21 -
Tired of installing Arch, I've made a script to automatize the installation. I'm going to upload it later. :DDD
2 -
I would like to rant one more time about my internship.
I began in July, the first. That's my sister who helped me to find this internship and I was a little scared about how bad it could be.
I came at the office, my boss told me that I would work in an "Innovation lab", an apartment where people works on projects that are less corporate than the enterprise's ones.
To me, it was amazing. So I came in this apartment, it was like a dream. I didn't know that I would have such luck to be in this environment : kitchen, sofas, beds, many decorations for all political ideologies, ideas. There was some decorations that were about weed and many cool things for the young guy I am.
The lab's leader told me that it was a very free environment and all the awesome stuff I could use.
Then they showed me where I would work.
We were two interns employed as web developers. We had a complete room for us.
Then we began to work there, and I was presented to my internship tutor.
He gave me some instructions but told me that I had a week before the project begin.
Here began the troubles.
We waited a complete week without having any instructions. Then we began to build something in PHP with our knowledge and the informations someone from the lab gave us.
When finally we had news from the project, two weeks later, we learned that the project would be built with ASP. NET.
Here we go, I learn ASP. NET alone. I have many problems and nobody helps (even if the problem comes from enterprise's API/Framework). I finally make something usable with no help, after I discovered that my mate wasn't developer at all and just took an option for her classes which forced her to get an internship.
She had 3 month left, I had 6.
Then when the project really began, nobody came to verify what I was doing and on a meeting, they said that I was doing nothing.
The boss even became mad on us because he couldn't see what we were doing (we're back end developers).
I asked for help to the developers of the enterprise and someone came, sad to have to help an internship, and learned some tricks but nothing else.
To have a concrete explanation of what DDD was, I had to ask 4 times for help.
Finally I had something that could receive data from the connected hives we are working on and store them into a database in the architecture of the enterprise.
Then, they wanted me to try an API for them. I tried, and it wasn't working at all. So they make me still wait to change my whole architecture when the API will be released.
Recently, I was told that I would never do the front-end of the project (which was an horror because of the fantasm of the lab leader). Then they realized that my late wasn't a programmer. So they asked me to make a prototype for the front-end. I did for a presentation.
Then they didn't tell me the device they would use for the presentation and it was an iPhone 7. Idk why, safari couldn't display what IE can.
They blamed me for having done a bad work. It wasn't my job. I did it to help because they can't find a fucking front-end developer with a little more experience than me.
Actually, I am an alone developer since my mate is gone and the lab leader don't want me to show up because she considers me as a shame.
I asked to be moved back in the office of the enterprise, they agreed and said it was a 2-weeks delay. It's the Thursday of the second week and I have no news. I send mails to my tutor, even SMS, he doesn't answer me. They didn't call me to give me my pay with a week late. And the person who is responsible doesn't answer me neither. I came to see her, but she wasn't available. I'm now alone in a desk, waiting the time to pass.
Fucking this shit.
I'm in France.
EDIT : I forgot to say that I can't use the sofas or bed because I'm allergic to cats and there were 3 cats. Now there is still one and this beast vomits and poos everywhere in the house...7 -
Job advertisement :
Ongoing project in
- .Net Core
- Docker
- AWS
- DDD and microservices
Reality :
- For now we have one monolith solution with 60 projects in .Net Framework, hosted on premise.
- But on the jobs board it was described as something completely opposite.
- We are going to migrate maybe this year, if we will have time6 -
We rewrote the whole thing, except for iFraming some old pages in. We had to, the system was fucking awful and couldn't cope with any of the new mission critical requirements.
Client didn't understand the scope. Our project leader somehow snuck it in and we worked on it for months. We were sure we'd be kicked off the whole project... Somehow things didn't crash and burn. How it didn't blow up defies rational thought and the laws of physics. The new system worked, the client was happy, and boss made a lot of money.
Lead dev worked weekends for what feels like an eternity, it really was his baby and no one else on our company could have done it. It's where I finally learned how to do things the proper way; DDD, unit testing and TDD, architecture, building strong components in front-end, you name it. Before that I had a great nose for code smells and how not to do stuff, but now I got to see a proper system for the first time. It was glorious.
Then lead dev left and the system degraded quite a bit because new team didn't keep to the architectural patterns or general best practices. But we had a good run.1 -
Rant to discuss Domain Driven Design (DDD) architecture.
Did anyone implemented on production?
How scalable and easy to use?
Do you recommend it? if yes in which environment? in which business types?17 -
I need to vent or I'm going to fucking explode like a car filled with bombs in motherfucking Iraq...
A couple of months ago I inherited a project in development from our team leader who was the sole developer on it and he was the one who designed every single thing in it.
I was told the project is clean, follows design patterns, and over all the code is readable and easy.
Those were all fucking lies.
See throughout the period he was working on it, I saw some of the code as it was going through some pull requests. I remember asking the dev why he doesn't comment his code? His response was the most fucking condescending shit I've ever heard: "My code is self-documenting"...
Now that I have full control over the code base I realize that he over engineered the shit out of it. If you can think of a software design pattern, it is fucking there. I'm basically looking at what amounts to a personal space given to that dev to experiment with all kind of shit.
Shit is way too over engineered that I'm not only struggling to understand what the hell is going on or how the data flows from the database to the UI and in reverse, I'm now asked to finish the remaining part and release it in 8 weeks.
Everything is done in the most complicated way possible and with no benefits added at all.
Never in my career have I ever had to drag my sorry ass out of bed to work because I always woke up excited to go to work... well except for the last 2 weeks. This project is now taking a mental toll and is borderline driving me crazy.
Oh, did i tell you that since he was the only dev with no accountability whatsoever, we DO NOT EVEN KNOW WHAT IS LEFT TO BE IMPLEMENTED?
The Project Manager is clueless.. the tickets board is not a source of truth because tickets set to resolved or complete were actually not even close to complete. FUCK THIS SHIT.
For the last week I've been working on 1 single fucking task. JUST 1. The whole code base is a mine field. Everything is done in the most complicated way and it is impossible for me to do anything without either breaking shit ton of other features (Loosely coupled my ass) or getting into fights with all the fucking libraries he decided to use and abuse.
1 whole week and I can't even get the task done. Everyday I have to tell the project manager, face to face, that I'm still struggling with this or that. It's true, but i think the project manager now thinks i am incompetent or just lazy and making excuses.
Maybe I'm not smart enough to understand the what and why behind every decision he made with this code. But I'm sick to my stomach now thinking that I have to deal with this tomorrow again.
I don't know if I'll make the deadline. But I'm really worried that when this is released, I'll be the one maintaining that nightmare of a code base.
From now on, if i hear a fucking developer say their code is "self-documenting" I will shove my dick + a dragon dildo + an entire razor gaming keyboard up their ass while I shoot their fucking knees off.
oh... and there are just a couple of pages of documentation... AND THEY ARE NOT COMPLETE.2 -
Today I was told that full stack is another name for a shit developer who wont be able to develop anything good because they aren't focused on one skill.
But it was by a person who claims to like OOP but doesn't know the 4 principles, SOLID, GoF, or DDD. So I take it with salt. But he claims his entire company follows this philosophy.
I think that some developers just decide that they're hot shit and refuse to talk about any other skills they don't know about since they must not be needed if they don't know them. Code is code.9 -
Tired of chasing an elusive architecture and finding good community that helps promote it. Basically:
- Not CRUD
- Not MVC
- More like CQRS; commands and queries represent use cases
- Event Sourced; event log is source of truth, everything else is a cached projection
- Functional Domain Design; not DDD; focus on immutability and simplicity
- Functional in general; less OO
- More focus on domain concepts rather than tech concepts
- Domain can be used through CLI, API, or SDK
- UI is just another client to the API
- Authorization is ABAC, graph-based access control
I'm looking for a fucking unicorn.10 -
It probably will be an unanswered question, but let's try.
Does anyone know of a large project using onion / hexagonal/ ddd or similar architecture with free access to the source code...
Or an example of said architectures that goes beyond "trivial dumb example".
The new recruits need... A lot of brushing up (I'd be for electro shock treatment and other stuff, but somehow HR thinks I'm joking).
As said, most examples I found are too basic. On the other hand, if I write now a good example, I'd need to do it in either my free time (nope, just nope) or jiggle it in somewhere in company time (aka it will be never finished nor be in a useful state).
Programming language preferred would be Java, but as I'm fluent in most languages except the forbidden ones (JavaScript and it's friends) ...
Anything would be helpful.
Most welcome would be an example with a focus on Adapter / Ports, e.g. abstraction of HTTP client usage / ORM etc.
Thanks.12 -
Domain Drive Design question:
I am working on a simple case to teach how to apply DDD, my case is as follows:
Simple forum with Author, Moderator and Users.
I am using Dotnet core for this. I am not sure how and where I should implement authorization:
1. Author can edit his posts only
2. Moderator edits any post
In dotnet core, we handle roles, policies in the api layer, and its per endpoint, I have an identity layer which handles accounts, registering roles and policies in database.
But I'm not sure if I should or how to handle authorization based on permissions in application layer.26 -
By far, the worst docs I've read was for a library I used to use for almost every project. I didn't really have to look at the docs because I knew the ins and outs of it. Time went by and I stopped using the library. I came back to a project that used that library, and I had the hardest time figuring out what was going on.
It was a library I wrote :/
I got much better at documentation after that. I started doing DDD (Document Driven Development) because many developer's first experiences with libraries are with the documentation. It allowed me to interact with my library before I even started development. -
Schoolproject teammate refuses to pull my changes in git before applying his because he thinks we're going to have conflicts ?!?!?!1
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Can we normalize NOT using giant acronyms in GitHub issue threads? Nobody understands what you are saying.
The same goes for you, HackerNews users, we can't psychically jump into your ASCII LOL DDD ABC XYZ brain and automatically know what you mean.8 -
Talking to my architect:
- hey, we have a lot of code smell and data is structured usually in a chaotic way, also its hard to understand what is going on with all these code duplications, maybe we can think about refactoring, better structure, maybe even we can extract some domains and make life less painful?
- what is domain?
- *facepalm*4 -
My coworker, Donnovan, has influenced me the most professionally. Showed me the ropes around HL7 when I had limited coding background. His philosophy of automating as much as possible has been my motto for over a decade, and I make sure I impart that to every new dev I train.2
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What's a good way to guage someone's domain modelling expertise in an interview? I don't want to make people go do an at-home project because we aren't big enough to be filtering candidates who won't do it, simply because they can't be doing that for every application.
Technology I can ask questions about, but stuff like DDD I think it's hard to know without seeing them work.2 -
!rant
I am shifting to India and curious about something.
Do people in Indian companies talk about clean code or ddd or tdd or pragmatic programmer or programming practices type of thing?
As I said just wants a heads up.11 -
We're at that part in the project where we either keep sinking money into it, or cut or losses and go with another project. Sigh.1
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Maybe someone can help me there.
I have to make a DDD project and I can't figure out in which layer I should put classes that - for example - convert objects from DAO to DTO or the Serializing functions.
Does someone who already made some. DDD help me?2 -
Trying to implement DDD into this current project of mine but the whole concept of converting Eloquent objects into plain entities seems to be more work than it is worth.
But the whole methodology of DDD also seems rather complicated.2 -
Test Driven Development, Pattern Driven Development, Domain Driven Development, Design Domain Driven Development.
When do we eventually get to the development part??3 -
I am currently in a process of learning Domain Driven Development (DDD) and how to actually implement it. I'm honestly struggling to understand it. I feel it is very abstract. I'd truly appreciate any resource reference that I can use, especially how to actually implement DDD.4
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I often get distracted by other incompetent teams and preach ddd and tdd to them instead of writing my own code1
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Neither one of them really *get* what I do, but mom likes to tell me his much she hates whatever program she uses at work as if I control the dev timeline.
-
Get to know the new company better (Changed job shortly before Christmas).
Learn some DPs, DDD, k8s, finish introduction to hacking course, start doing htb and thm machines, finish and defend my thesis, finish books clean code, thinking in java (reading it to fill in gaps on knowledge), a few books about pentesting.
Among non tech goals: pass drivers license exam for cars, another one for motorcycles, go back to learning russian. -
Can anyone give me some resources about DDD, clean architecture and repository pattern on c# or asp.net core?
Thanks!2 -
Question directed to devs who know a bit about setting up middle sized architecture.
Prestory: Joined into development of a middle sized online game. Figured they created a monolith over the last 6 years up to a point where nothing works properly and nothing can be changed without wrecking the whole system. Figured a monolithic approach isn't such a great idea.
Current Situation: In a different, same scale online game development team, game itself working but team is struggling with architecture.
My job is to come up with an approach on how to set up masterserver/matchmaking/database etc. Reading through various articles about common principles (SOLID etc.), i figured that a microservice+event-/servicebus architecture may work for that kind of project.
The idea would be to have a global interface in which microservices can be hooked. So a client registers to a client handler on startup, then starts to queue for a game, the client handler throws an event on the bus to register the user to matchmaking. The matchmaker happens to listen to those events (Observer Pattern) and adds him to matchmaking, when a match is found it throws an event on the bus to connect the user to the server, etc. One can easily imagine a banhandler throwing in a veto to cancel such an action, metrics and logging is fairly simple to add (just another service listening to all events), additionally Continuous Delivery, FRP and such are also beneficial advantages and it is said to scale well.
The question is, would you do the same, is there maybe something i might be overlooking? Do you have better ideas?
Keep in mind that we are not too experienced and are bound to different languages (python, C++ and java mostly) and are a small (4 Devs) Team with different strengths.
Thank you for your feedback and criticism!1 -
I'm trying out some stuff I read. I have rich domain models with private fields. In order to create EF core entities my domain models create snapshots with public properties.
So 3 models - domain, snapshot, entity.
Now I am thinking about introducing a fourth for the API.
This seems mental and that I have misunderstood something. Automapper might help clean this up. -
Learn more about networking, revisit computer science fundamentals, memorise agile frameworks, practice DDD properly, learn about basic property and conveyancing law for my new job, get through 1 tech book every 2 weeks, revisit Linux as it's been a long time, learn the basics of developing and deploying with azure, learn terraform and docker, finally finish building my own product that has been going for 3 years now, continue learning about mobile development and build a mobile app for my new product.
Should be fine xD5
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