All Questions

I'm working on centralized authentication and authorization API system and got stuck in front-end vs back-end dilemma. Front-end person is telling that should to have only one request to that API to ...

I have a state machine that has about 10 states. Every time I receive an event that is valid for the current state the state machine is in, I will process that event and this makes the state machine ...

Introduction: I'm working on a SaaS product that is up & running in the production. However, we are now going to sell this product for enterprises to work locally on their servers. I'm currently ...

I'm facing problems with what I feel is too much abstraction in the code base (or at least dealing with it). Most methods in the code base have been abstracted to take in the highest parent A in the ...

Use Case: I need to join two stream sources(say orders(order_id, order_val) and shipments(shipment_id, shipment_val)) based on an id(order_id = shipment_id) and generate a new event shipment_order(id, ...

I've a method that apparently has quite some duplicate logic, I'd like to generalize it so that their duplicate logic could be shared and reused, also make my code more extensible for future additions....

I have a Windows PC and a Ubuntu laptop that I use for development. One of my main issues is that I switch between them multiple times a day, but because they are different machines, I am unable to ...

I'm building an application which monitors uptime of hosts/ip addresses. I'm using Laravel + VueJS. So the app should check lots of urls every minute and get & store in db http responses. I've ...

This is a thing I'm doing a lot lately. Example: setCircle(circle, i, { current }) { if (i == current) { circle.src = 'images/25CE.svg' circle.alt = 'Now picking' } else if (...

Event storming results is a story and in a story, events can be repeated. Can events be repeated in an event storming board like this? event 1 happened => event 2 happened=>event 1 happened again. ...

I am looking for some reference material/architecture/ experience for building timer triggers or reminder systems at scale. A simpler question would be "how would you build Google reminders backend?" ...

Let me explain what I'm doing. I have a grid based on integer coordinates like (5,5), (5,6) etc., and I have an algorithm FindCells that generates a list of (coordinate, interval) tuples. These ...

This SO post lists a fairly comprehensive list of situations where the C/C++ language specification declares as to be 'undefined behaviour'. However what I want to understand why other modern ...

how would i organize my project structure, areas or folders to support logical grouping structure within my project. www.mysite.com/org/{dynamic}/Importer/{controller}/{action} Currently i have two ...

Suppose I have a command like below: public sealed class UpdateExampleCommand { public int Field1 { get; set; } public string Field2 { get; set; } public bool Field3 { get; set; } ...

I am writing a Python framework. In order to ensure a class has some properties, I make base "interface" classes like: class BananaContainer: def __init__(self): self._bananas = [] @...

i have a certain question about using redis for caching. so the problem goes like this. we have separate microservices for reading and writing to database. a service that provides reads from db sites ...

For an NP complete problem, how is computational infeasibility determined? Are there guidelines that that determine whether an NP Complete problem is computationally infeasible?

In the below example, assume FooA and FooB each have constructors that have a large amount of dependencies being injected into them. If I have a class that needs to determine which IFoo ...

I'm fairly new to the implementation of VMs. In theory it's a simple idea, but actually getting it all to work is killing me. My objective is to emulate a Sun SPARC workstation. I've done this ...

Example BACnet network: Some help is needed to solve a problem around architecting an efficient method of polling BACnet devices across multiple networks (i.e. MS/TP networks) where client software ...

I'm currently in a situation (i'm a technical lead) where the client has modified on his own the source code, and i'm being told to accept the changes and keep working on that version. Technically he ...

I have to develop a web application , to the calculation of the aviation fuels oils prices for all airline company from the excel Sheet this is the summary:the final price calculation formulas of ...

I have an application where I'm using pure DI to construct my object graph. I would like to use a factory so I can create and destroy instances of a certain class at run time. The trouble is that ...

I am relatively new to database architecture and I have been tasked with designing a database that will store 250 values per entry by my group. This is pushing the upper limit for fields in an Access ...

I have a deep object content tree that I transform into a XML using JAXB and a small self written API on top. But now I want to create a static HTML site that has basically the same content (and ...

I want to design my project in DDD spirit. This is single aplication (not microservices) but with separate BC (as modules). Each BC have separate mongoDB collection. I have problem with communication ...

The more CS I read the more I encounter trees, heaps and graphs. All languages seem to incorporate linear data types like lists and arrays and most have some compound data type like objects or structs ...

I’m looking for advice where the business logic and data layers in a Flask/SQLAlchemy-based app all use essentially the same object class. As an example, my app includes a task scheduler. Tasks ...

I am looking for the best way of implementing a Multitenant App in AWS. Imagine I am an eCommerce business that has several eCommerce clients and those clients have other clients that are the ones ...

I'm reading Uncle Bob Martin's Clean Code and now I have a question about the code I wrote. Is using a method as an assertion method a good or bad practice for clean code? Example // Simple example ...

I am a developer working on a new mobile app for Android and iOS with a big backend component. We have been in 3 sprints of this project and we use Scrum with all of its ceremonies (refinement, ...

Why use a for loop instead of a while loop if a while loop does everything they do and more? The while loop seems to be more versatile. Are there any benefits or is it purely conventional? Give some ...

I work in an enterprise environment composed of multiple software packages - an ERP system, a CRM system, a transport management system, an internet facing online ordering system, and so on. Some of ...

I'm not even sure how to word this question. Background I'm building a platform for product businesses to use that will take online orders from their customers. It's a fairly simple concept, but ...

I run a quite small website and I'd like to have some analytics about the traffic it gets from regular users. And I'd like to continue allowing bots to scrape it. I don't really care enough to invest ...

I'm running a program in C++ on a Chromebook Penguin terminal. The program runs perfectly the first time, but on consecutive runs it acquires different results. I suspect that this is because the ...

How does one write & run queries against a database/warehouse if they have no knowledge of how the data is structured? By "structure" I mean table names, fields, etc. Unless I have table names, ...

General design pattern for object error state Consider a simple class Wallet that models a wallet. A Wallet contains a certain amount of Wallet.Cash and it is possible to take money out / put money ...

I'm new to this community, I'm glad I found this and so I can ask questions like this one (as per https://meta.stackexchange.com/questions/68384/whats-the-difference-between-stack-overflow-and-...

I don't know too terrible much about the CPU, but I know it processes assembly instructions and that Windows can say that it is at anywhere from 1-100% usage. How is it possible for a program to use ...

Suppose I have a message broker that allows consumers to specify a batch size. What are the advantages and disadvantages of consuming events in batches compared to consume them one by one? The ...

Given the three schema fragments: "column": { "type": "object", "$id": "#column", "properties": { "name": { "type": "string" }, "ordinal": { ...

I'm trying to set up an Azure DevOps pipeline to build a macOS app. I think I have all the necessary steps in place, and it runs as far as I expect it to for now. However, I now have reached the step ...

I want to create a CMS Application by ASP.NET Core, so I want to know how can I implement an architecture to be able to code some plugins and automatic update for this Application. And I want it to ...

I'm struggling with architecture for a few related programs and libraries. Primarily with how to handle editing properties of a model class instance across multiple views and where to implement ...

First of all, I'm aware that in python nothing is really private but let's assume that we can stick to using the leading underscore to indicate that something is private. I have a module consisting ...

We have many clients which, upon start up, request a specific resource on the server using an HTTP API (not RESTful). This resource is - currently, identical for all clients. Naturally, since the ...

I'm working on a migration programme, involving a number of data products from a legacy on-premise environment to a cloud provider. We're trying to decide which products to migrate and which to EOL. ...

API Gateways are great. They can produce a nice unified view of a sea of micro-services living behind them. However, on large scale projects, what patterns can be adapted to allow a single API ...