Deepika Pusala - DEV Community

Deepika Pusala

Nov 12

Transactions, Isolation Levels, MVCC, Locking, Triggers, Audit Logs & CAP Theorem in PostgreSQL 🔒

#backend #database #postgres #sql

21 min read

Deepika Pusala

Nov 12

CQRS & Event-Driven Thinking: Commands, Queries, Domain Events & the Outbox Pattern Explained 📨

#architecture #backend #systemdesign

16 min read

Deepika Pusala

Nov 12

PostgreSQL Query Optimization: Indexes, EXPLAIN ANALYZE, B-tree vs GIN vs GiST & the N+1 Problem 🚀

#database #performance #postgres #sql

17 min read

Deepika Pusala

Nov 12

Structural & Behavioral Design Patterns in Python: Repository, Factory, Strategy, Decorator & Adapter Explained 🧩

#architecture #python #softwaredevelopment #tutorial

17 min read

Deepika Pusala

Nov 12

SOLID Principles Deep Dive (I & D): Interface Segregation and Dependency Inversion Explained 🧩

#architecture #python #softwareengineering #tutorial

15 min read

Deepika Pusala

Nov 12

SOLID Principles Deep Dive (S, O, L): Explained from Absolute Zero 🧱

#architecture #programming #softwareengineering #tutorial

12 min read

Deepika Pusala

Nov 11

Transactions & Basic Indexing in PostgreSQL: COMMIT, ROLLBACK, EXPLAIN & SQLAlchemy ⚛️

#backend #database #postgres #sql

16 min read

Deepika Pusala

Nov 11

Relational Databases, SQL, Normalization & ACID: A Beginner-Friendly Guide 🗄️

#postgres #sql #backend #beginners

22 min read

Deepika Pusala

Nov 11

Authentication Basics (JWT) & FastAPI Security: A Beginner-Friendly Guide 🔐

#authentication #fastapi #python #security

20 min read

Deepika Pusala

Nov 11

SQLAlchemy 2.0 & Alembic Migrations: A Complete Beginner's Guide🗄️

#beginners #database #python #tutorial

28 min read

Deepika Pusala

Nov 11

Pydantic v2 Deep Dive & Custom Validators: Explained from Absolute Zero 🛡️

#beginners #fastapi #python #tutorial

21 min read

Deepika Pusala

Nov 11

FastAPI Fundamentals & Dependency Injection: Explained from Absolute Zero ⚡

#backend #fastapi #python #tutorial

16 min read

Deepika Pusala

Nov 11

Python Packaging & Environment Config for Services: venv, Poetry, pip-tools, Pydantic Settings & 12-Factor Explained 🐍

#backend #python #softwaredevelopment #tutorial

20 min read

Deepika Pusala

Nov 11

Deep Git Workflows: Rebasing, Conflict Resolution & Branching Strategies Explained from Zero 🌳

#beginners #git #softwaredevelopment #tutorial

19 min read

Deepika Pusala

Nov 11

Python Packaging, Type Hints & Testing with pytest: A Complete Beginner Guide 🧪

#beginners #python #softwaredevelopment #tutorial

21 min read

Deepika Pusala

Nov 11

WSGI vs ASGI, Uvicorn & Middleware: Explained from Absolute Zero 🚀

#python #fastapi #webdev #beginners

11 min read

Deepika Pusala

Nov 11

Python Asyncio Concurrency Patterns: Semaphore, Lock, Queue, gather & TaskGroup Explained from Zero 🧵

#python #asyncio #fastapi #beginners

17 min read

Deepika Pusala

Nov 10

Instagram Clone Frontend — Part 4: API Client & Networking (Native Fetch API, Auth Header Injection, Base64 File Conversion & Unsplash Resolution)

#api #frontend #javascript #webdev

1

5 min read

Deepika Pusala

Nov 10

Instagram Clone Frontend — Part 3: State Management (React Hooks & Browser LocalStorage)

#frontend #javascript #react #webdev

1

5 min read

Deepika Pusala

Nov 10

Instagram Clone Frontend — Part 2: UI Architecture (React, CSS & Responsive Layout Engineering)

#css #frontend #react #webdev

1

5 min read

Deepika Pusala

Nov 10

Instagram Clone Frontend — Part 1: Build Tool & Runtime (Vite, Node.js & npm, and Modern ES6+ JavaScript)

#frontend #javascript #tutorial #webdev

1

4 min read

Deepika Pusala

Nov 10

Instagram Clone Backend — Part 5: Performance & Database Optimization (Pagination, Zero N+1 Queries, Optimistic Locking & Integrity Constraints)

#backend #database #performance #tutorial

1

6 min read

Deepika Pusala

Nov 10

Instagram Clone Backend — Part 4: Security & Authentication (Bearer Tokens, Argon2id, Enumeration Defense, Actor Extraction & Input Protection)

#backend #python #security #tutorial

1

5 min read

Deepika Pusala

Nov 10

Instagram Clone Backend — Part 3: Database & Persistence (PostgreSQL 16+, SQLAlchemy 2.0 Async ORM, asyncpg & Alembic)

#backend #database #postgres #python

1

5 min read

Deepika Pusala

Nov 10

Instagram Clone Backend — Part 2: Frameworks and Servers (FastAPI, Uvicorn, ASGI & Starlette)

#architecture #backend #fastapi #python

1

4 min read

Deepika Pusala

Nov 10

Instagram Clone Backend — Part 1: Language and Runtime with Python & Asyncio

#backend #programming #python #tutorial

1

4 min read

Deepika Pusala

Sep 3

Week-05 ,Task- 1: Asynchronous Python - asyncio Deep Dive

#beginners #learning #python #tutorial

1

11 min read

Deepika Pusala

Aug 25

Week 4 - Task 2.3 : From Functions to Powerful Decorators 🐍💜

#coding #learning #python #tutorial

1

5 min read

Deepika Pusala

Aug 25

Week 04- Task 2.2: functools Toolkit: reduce, partial, lru_cache & wraps 🧰

#programming #python #tutorial

1

4 min read

Deepika Pusala

Aug 25

Week 04 - Task 2.1: Functional Programming in Python: map(), filter(), reduce() 🗺️🔎➕

#beginners #coding #python #tutorial

1

3 min read

Deepika Pusala

Aug 25

Week 04 - Task 1.3 : @dataclass, abstract base classes via the abc module & composition vs inheritance

#beginners #code #python #tutorial

1

3 min read

Deepika Pusala

Aug 25

Week 04 - Task 1.2: dunder/magic methods (init, repr, eq, len, add, etc.)

#beginners #coding #python #tutorial

1

4 min read

Deepika Pusala

Aug 25

Week 4, Task - 1.1: Classes, Inheritance & MRO 🐍

#beginners #programming #python #tutorial

4 min read

Deepika Pusala

Aug 24

Week-04,Task- 1: OOP & Dunder Methods

#beginners #coding #python #tutorial

1

8 min read

Deepika Pusala

Aug 20

🐍 Python Context Managers: The Easy Guide (with, enter/exit, @contextmanager, contextlib)

#beginners #coding #python #tutorial

1

4 min read

Deepika Pusala

Aug 19

Week-03 Task-2: Iterators, Generators & Context Managers

#code #learning #python #tutorial

7 min read

Deepika Pusala

Aug 17

Python Scope, First-Class Functions, *args,**kwargs & Mutable Default Arguments

#beginners #code #python #tutorial

9 min read

Deepika Pusala

Aug 17

The LEGB scoping rule, first-class functions, *args,**kwargs(key-word args),mutable-default-argument pitfall

#beginners #code #python #tutorial

8 min read

Deepika Pusala

Aug 16

Mastering Advanced Python: Arguments, Closures, and Memory Pitfalls

#coding #python #tutorial

3 min read

Deepika Pusala

Aug 16

Understanding Python Core: References vs. Copies, LEGB Rule, and First-Class Functions

#python #programming #webdev #codenewbie

2 min read

Deepika Pusala

Aug 16

Day 7 as a Full Stack Intern: Python Data Model Demystified: Everything-Is-An-Object & Mutability

#python #programming #backend #devjournal

2 min read

Deepika Pusala

Aug 14

Day 6 as a Full Stack Intern: DOM & CSSOM construction , Render tree

8 min read

Deepika Pusala

Aug 12

Day-5 as Full Stack Intern: Utility-first vs component-scoped styling philosophy (conceptual intro to Tailwind vs CSS Modules)

#css #frontend #tailwindcss #webdev

2

8 min read

Deepika Pusala

Aug 12

Day-5 as Full Stack Intern: Responsive Images & CSS methodologies

#css #frontend #html #webdev

1

12 min read

Deepika Pusala

Aug 12

Day-5 as Full Stack Intern: Media Queries & Fluid Typography

#css #frontend #learning #webdev

2

8 min read

Deepika Pusala

Aug 12

sample

#beginners #css #frontend #webdev

1

8 min read

Deepika Pusala

Aug 10

Day 4 as a Full Stack Intern: Grid, Flexbox VS Grid?

#webdev #fullstack #interview #css

7 min read

Deepika Pusala

Aug 10

Day 4 as a Full Stack Intern: Flexbox

#webdev #css #interview #fullstack

5 min read

Deepika Pusala

Aug 10

Day 4 as a Full Stack Intern: CSS Layout- Positioning, Flexbox & Grid

#webdev #css #flexbox #fullstack

2 min read

Deepika Pusala

Aug 8

CSS Foundations: Understanding the Box Model, Cascade and Specificity

#css #frontend #tutorial #webdev

9 min read

Deepika Pusala

Aug 8

Understanding the CSS Box Model, Cascade & Specificity

#beginners #css #frontend #tutorial

3 min read

Deepika Pusala

Aug 4

Day 2 Diaries: Semantic HTML, Accessibility & the Branch 🌿

#webdev #html #lighthouse #ai

4 min read

Deepika Pusala

Aug 3

Day 1 as a Full Stack Intern: Setting Up My First Real Git Workflow

#beginners #codenewbie #git #github

5 min read

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