All Questions

C++ supports protected inheritance: A class can derive from a base class B in a way that the "outside" world doesn't see that class "as a B" but the class itself and it's derived ...

I have a frontend through which users can submit analysis requests, which are inserted into a database. These analysis requests are received in a NodeJS server using Postgres notify/listen. Using ...

I'm working with the Dependency Injection Pattern in Unity3D (an engine which uses MonoBehavior, a class that doesn't have a constructor, as the base class for all of its game components), and I ended ...

I work in a field where lots of code is written, but hardly ever tested. This is because we are foremost scientists who try to solve problems with code. The few coding courses we had, focused on the ...

Example Application I will try to explain my problem by using a familiar application. Lets'say I'm building a Discord / Slack / Microsoft Teams clone; and for simplicity’s sake, it will contain 2 ...

I'm building HTTP API with DDD principles. The end goal is that the server runs on some chosen language X but the clients can use what ever language the software supports. Service has state, but HTTP ...

I have a bunch of excel files(Multiple sheets) with some data of similar types, but i'm having troubles when this data has to be inserted in SQL DB. the data in these files are unordered (eg: the ...

Suppose we have some microservices and a saga will run to do a transaction in 6 microservices. What if the whole system dies(unexpected shutdown), on middle of saga process in the step number 4?(...

I am developing a RESTful application with nodejs in the backend with express.js as middleware. I am also developing a client in Reactjs. I want to use an external authentication service (LDAP/AD/ADFS)...

We are developing a mobile app where consumers (companies) create AR content for their products. The content ranges from simple pictures to gifs and embedded videos. We already released versions ...

I have seen on this forum that performing the same operations with long (type of variables) takes more time as they are declared as int. See , for example: https://stackoverflow.com/questions/19844048/...

I am encountering a design problem on a new project. I have chosen the library Luxon (https://moment.github.io/luxon/) because I think it suits this project perfectly. Date-fns (https://date-fns.org/) ...

An example would be an Automobile sales application where Autos are stored with their Make and FuelTypes. An application user would save their search criteria in a SearchCriteria table which would be ...

For simplicity, assume my application logs only dictionaries. I want to add a step to Python logging for my application to prevent logging any dictionary with the key password, i.e., def clean_log(...

I have been studying the best practices for a code review, and I was wondering what to do in the following scenario: During a code review, I see potential improvements, but decide that they are ...

Given a layered architecture consisting of presentation layer business logic layer data (access) layer and a SPA web application communicating through REST endpoints with the backend (eg Angular and ...

We have an application which contains of multiple composer packages. A default structure of the site is: src/ application/ vendor/ vendorname/ framework/ filemanagement/ ... Each package has its ...

Is it a bad practice (or maybe anti-pattern) to have service to service dependency in the layered architecture? I've noticed that when an application is designed in a way that a service can call ...

I'm trying to write unit tests for business logic classes I have control on, but which operates over some services that are not designed with the testability in mind. Currently I’ve extracted the ...

It is often useful to document when (i.e. in which versions) a feature was added, marked as deprecated, etc. For example: Function FooBar(x, y, z) Foos x with y and bars them with z. (Parameter z was ...

I hear this term from time to time but haven't found any well defined precise technical definitions posted online. They all seem to use the notion as if the term scoped has been defined elsewhere. I ...

I have the following situation: class User { public Thing curThing; } //each thing can only belong to one user at a time //And vice versa class Thing { ...

Sorry if my question sounds general, I'm new to GUI and frontend/backend ideas and all that (mostly I just do scripts for math hw and such) but I make it more specific here. I have a program that runs ...

We have an API platform which allows user to create and manage a certain type resource. Client is expected to provide a callback url where our server will send notification to when the resource is ...

I want some advice about project structure and architecture. Context: I've been looking into building a news aggregate; postgres->expressjs+typescript->React (at this scope). For the moment I'm ...

I have a huge project. Inside, I have many flows, such as purchasing flow, search flow etc. I am aiming to publish logs inside these flows to S3 (for simplicity, S3 is not relevant here.) I have a ...

I am currently researching existing authentication/authorization solution that are used for REST APIs. More specifically I'm interested in backend-to-backend interactions but client-to-backend is ...

I noticed a pattern in my code, where im repeating a solid amount of code. Let's say my application has 2 layers. UI and Services. I have a FileService class, that has a CopyTo method. Now there are 2 ...

I'm developing real-time chat functionality as part of an application. As per my initial structure I had 3 Domain Objects as part of this new context: Thread (aggregate root) ThreadMessage (entity, ...

I believe extensive automated unit tests should be part of the build. However the testing pyramid suggests that there should be a much smaller number of system tests. Should an automatic build include ...

I have a problem scenario in which a list containing activities to be performed is prepared before hand for future execution. Activities in the list need to be executed sequentially. The activities ...

I have a website that is based around some external APIs related to a certain theme. It combines data of responses from multiple APIs before returning to the frontend. With that said, my server side ...

I have a S3 bucket which gets ~5000 entries added to it per day. This S3 bucket will start out with a 2 year retention(lifecycle) policy. This retention period might change in the future either ...

I am trying to create a connection with a wss endpoint. My assumption is I make an endpoint on my system (socket) and listen on it, and create a client to connect to the endpoint of the website. I am ...

When it comes to using an LR parser generated by a tool, such as Bison, a disadvantage that often comes up as counterarguments is that the resulting parser will be unreadable and complicated to debug, ...

I have a web application with an express/node backend using typeorm and PostgreSQL. The home page in my app is a query with lots of inner joins that shows the user a complex report. This query takes ...

nalzok posted an interesting question over a year ago: "Why not use SQL instead of GraphQL?". Respondents seem to suggest three main problems: One should not directly expose one's database ...

What are the drawbacks of sharing immutable state between actors in a non-clustered system? It's clear as to why a mutable shared state works against a lot of the guarantees that the actor model ...

I have a website where new requirement came up where user can download a zip file of 500MB from the server. I am expecting max 10 concurrent users(CU) will be performing this activity . Webservers ...

I want to write a Node CLI that leaves a server/daemon running in the background, so subsequent calls to the CLI are much faster, as it can just print the latest info from the daemon (which is already ...

I'm thinking of creating a system which would help me transfer the output of my bash terminal to an app in a remote device(like my Android smartphone). I was thinking of tackling this problem as just ...

In our organization we're looking to adopt a service oriented architecture where new requirements (that are natural bounded contexts) are being built as separate services that integrate into the main ...

I have a data synchronisation concurrent algorithm. It does the following: get data and files from server, send data and files to server, save them to database / filesystem. Imagine the system like ...

I have been debating with my colleagues about the following and we still did not reach consensus. The architecture is as follows: medium size monolith application for intranet usage a small ...

Say you were to develop a REST API that provides access to a set of complex, long-running, operations. The typical paradigm for an API like this (as I understand it) usually involves (the client) ...

I have been reading the AWS documentation for a solid 2 weeks, and configuring a terraform system to deploy a multi-region network. I have it mostly wired up, but I am not sure I have accounted for ...

When it comes to name things like if, else, or return, many developers and a lot of documentation calls it control flow or control flow statements. https://docs.oracle.com/javase/tutorial/java/...

I know that the inode points to the actual disk blocks in the case of the normal file system. But what does it point to in the case of .... say .... the terminal device file. Does it point to the ...

I am trying to setup a multi-region (global) AWS system, where each region (which has multiple availability zones) has its own VPC. In theory these VPCs all use different portions of the private IP ...

I have inherited a lot of bad code at my current position. By legacy, I mean WinForms projects written in VB.net where ALL of the logic is written directly in the form code, with no classes, tons of ...