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📝 Parottasalna Blog

248 practical articles on backend engineering, system design, databases, Docker, Python, AI and DSA, explained simply.

3 articles tagged #Object-Oriented Design · Clear filters

Programming

Let's Build a Bank Account Simulation

Problem Statement 🧩 Overview Build a bank system to create and manage user accounts, simulate deposits, withdrawals, interest accrual, and overdraft …

May 26, 2025 · 1 min read
Coding

Code Smell : Anemic Model / Data Class

Problem faced: During our software development, we used to use design a class just to use it as a data structure. But while i was interested in readi…

Jun 19, 2024 · 4 min read
Design Patterns

Decorator Design Pattern

Decorator design pattern is used to modify the functionality of an object at runtime . At the same time other instances of the same class will not be…

Jun 10, 2024 · 4 min read