All Questions

The problem: There are two application, which have many common parts. Desire: reuse common code between application. Question: what is the best way to achieve this? Simply create two application ...

I have around 125 million event records on s3. The s3 bucket structure is: year/month/day/hour/*. Inside each hour directory, we have files for every minute. A typical filename looks like this: ...

I have started in a new team. I have 20 years experience as a developer, and I have been in the role of a team lead in several projects. Normally I am very much pro code reviews, but I ended up in a ...

If I have two functions that I repeatedly use back-to-back, should I wrap those functions inside a new one? For example, I have: def prepare_data(data): # do a few lines of data prep return ...

I am developing a work flow to use canonical log files to verify the behavior of a system from a unit test (and possibly integration test) standpoint. It seems like such a pattern doesn't exist ...

Let's say I'm programming a realtime stock chart and I want my program to run indefinitely without running out of memory. What might be a good way to keep the current data in memory up to a certain ...

so I am struggling a bit with a database setup. I found post with similar problems, but the reason behind the answers was not what I was looking for, hence I ask again with my specifics. I am building ...

Given the following hypothetical programming language: Intended for practical programming A simply typed lambda calculus (STLC) All objects are functions, based on Church encodings I am aware that ...

Should each Microservice have a user account account created for each user that will have resources created for them on the Microservices? For example if there is a user profile service, should there ...

I was refactoring bunch of if-else branches to polymorphism. Basically I am branching based on command string, then I deserialise from json data object (different commands have different data ...

I need your help to check if this configuration is good for virtualization. I want to deploy a kubernetes cluster which will primarily host my applications. I want to start a business but I have a ...

Problem In my application a user can lock a set of related aggregate roots to work exclusively on them and to avoid the usage of an invalid set of objects later in the process (by other employees). ...

I want to use a rule engine to centralize business rules. My rules require information not typically owned by systems that call the rules engine. I don't want to complicate these systems (System A and ...

Here's a common question I ask myself: If I have a ThingDoer class and it has a method DoThing(), and I want to log a message stating "Doing a thing", should I put this logging code in the ...

We have an email system that handles incoming and outgoing emails, the risk is that we get so called feedback loops, a bounce email is answered with another bounce etc. We have safeguards in place to ...

Background: this is a continuation of this question here, further expanding the thought experiment. In short, you have a magic calculation machine which has the following properties. The machine is: ...

Now that Tesla has bought a large amount of BitCoin, other companies may follow suit. If my company wanted to do that, I was thinking about how it could be done. I'm familiar with the way private ...

We have a college management system developed over a decade as and when requirements came along. The project team also comprised of students currently doing graduation in the course. These students ...

I've got a validation function something like this (pseudo-code): public function validate(Thing thing) { if (thing.a != "a") { return false; // most of the time } if (...

I just can't choose a method of interprocess communication that would fit my goals, so I ask for help. My list of needs is as follows: It must be safe. Communication should not be hacked. ...

As my team's microservice architecture grows, as does the pain of manually deploying each individual service in the application. I've played with Docker before and am now learning to leverage the ...

I have a scenario where user has multiple filters in a web application and a displayed list of items. In the gui it has multiple FilterGUI that he/she can tune interacting in the browser (these are ...

This occurred to me when looking at stencil computations in numpy. This python library compiles compute-intensive components, so I believe that it's a valid example. Here making selections on an array ...

Generally most of the authorization in the system is done in authorization layer which then calls commands/queries from application layer, which call methods on domain aggregates. However there are ...

It may be a pretty simple question, but if I understand the concepts correctly, I can't really grasp how are you supposed to create releases with CI. Basically, if you merge unfinished branches into ...

I am designing out an app that would have an Angular frontend and Spring Boot (Java) backend. I was considering (but not married to) the prospect of JWT-based authentication: User logs in with ...

I work at a company where we have built much of our own e-commerce platform from the ground up. We have a growing number of teams who effectively operate as stream-aligned teams, based on functional ...

Imagine you work for a financial services company that uses a pipeline to deploy new code to their customer-facing systems. Before any new code can be made available to customers, it must first go ...

I have been implementing a software driver for an external (from my microcontroller point of view) chip communicating with my microcontroller over I2C. From the higher perspective the chip is a ...

I think many people with even a small experience in designing UI/UX to handle user data will be familiar with the perils of putting in input field/database limits for personal data, such as names. ...

I have been implementing a finite state machine which basically ensures configuration of the external chip which communicates with my MCU via I2C. The skeleton of the configuration state machine looks ...

The Law of Demeter makes sense in some obvious cases. # better dog.walk() # worse dog.legs().front().left().move() dog.legs().back().right().move() # etc. But in other cases it seems to lead to an ...

I'm designing a project which will require iterating through a foreign language dictionary in JSON format. The idea is clicking on a word in a text will trigger a search on the JSON file for a match. ...

Task To Accomplish I am creating a validation service which validates a user profile data for correctness. A user profile can have following information: Name Address Social Security Number(SSN) ...

I'm working on a system design and feel like I'm doing it wrong. Situation I have two services and they each have a bunch of data they each need. Much is overlapping data from overlapping tables. Also,...

I'm trying to understand when it is better to pass explicit arguments to a method and when it is better to just pass self. I created a little example to illustrate the question. Here are two different ...

I am looking to add Swagger documentation to my REST APIs but am wondering if it makes sense to add it to all APIs or not. Most of my APIs will only be used by a UI so if I expose for instance a POST ...

so I am making a website for myself. I need code about how to get distance from top to an element, and I found it from SO. I'm aware that copy pasting big chunks (a function of 11 lines) of code is ...

I have checked many articles and discussions around the web. So we have the main diagram: So we have Controller pointing directly to RequestModel. So straight to the point, should I: Create a ...

I used to be a software developer, but I left the industry three years ago. I now have an idea for an app I'd like to develop. Back when I was a developer, I had mixed feelings about using freelancers,...

Wanted to ask if the following design is okay based on my requirements: Brief Description of my requirements: I have a requirement to gather some info from the user and then the user attaches a file ...

Let's say you have a user registration form in your frontend. In both, backend and frontend, password is valited so it has to match a set of requirements: more than 6 characters, no symbols, etc... ...

I am working on the backend of a web application that exposes a REST-like API to the frontend of the application. Currently, I am exposing a "Users" resource, where each user can be ...

What I've read A Git repository is the . git/ folder inside a project. This repository tracks all changes made to files in your project, building a history over time. (Source) Repository: A collection ...

I'm reading that UUIDs are good for session IDs, but I'm also reading that UUIDs are not efficient to use as primary keys in a database. I'm working on a Flask API with SQLalchemy on Azure for context....

Following question is more about best-practices than a real problem - nevertheless, I'd like to know how to do it in best way. Given a service, that can operate in multiple countries/geo-areas, one ...

I'm designing a database for an application that should deal with notifications. Each notification has a sender, an arrival date and a processing status. There are three different types of ...

I've written a class that synchronizes a table between two databases using Dapper. The public and private Methods in the class are generic and the generic parameter is the POCO class that is being ...

C and C++ have standards, but support isn't perfect, the only available copies on the internet are drafts, and there are immensely useful things that aren't standard, such as __attribute__((cleanup)). ...

I have a WebApi backend with a Blazor WASM frontend. The application is split up into 3 main parts. Core, Infrastructure and Presentation. Basic onion architecture structure. Core.Domain Domain ...