Factory design pattern is a creational design pattern, judging by its name it sole purpose is to create (or instantiate) objects, yet another main benefit its you don’t have to worry about the creational process what so ever, by saying “you”, it means that your current context of code can…

This demonstration for identity server is using https://demo.identityserver.io/ (code flow with public client): client id: interactive.public grant type: authorization code with PKCE and client credentials access token lifetime: 60 minutues allowed scopes: openid profile email api offline_access Get the access code: In order to get the access code you should first refer to the…

Study Case + Tutorial — The Problem: We were trying to implement a solution that runs periodically (once in a week) and calls to an external api with 1,500,000 items metadata “{{domain}}/items”, then trying to figure out for each of the items if it needs to be updated or inserted to the database according by some arbitrary…

Really Simple Syndication or RSS is a web feed, that allow users to be notified when a website is update a specific topic. For example: for a news website, like (https://www.ynet.co.il/), Jenny would like to be notified when there is a travel update or a politics update. …

Isolation (The I in ACID), is a term that ensures that concurrent execution of transactions leaves the database in the same state that would have been obtained if the transactions were executed sequentially (wiki). In other words, if you do the operations again with the same base data the outcome…

I would like to demonstrate a good practice for handling results, through this simple snippet of code (validation if a user has been approved or not) : public bool CheckIsApproved(int userId) { try { User user = this._userRepository.GetUserById(userId)…

The Mediator and the Observer has some similarities, and can be very easily confused, in this post I would like to demonstrate their differences by two useful examples: 1. Chat application. 2. Emergency ambulance operator application. Chat application (Mediator design pattern) The mediator design pattern wikipedia definition is: With the mediator pattern, communication between objects…