Week 2 | Day 3 | PostgreSQL and pgvector
PostgreSQL with the pgvector extension transforms your relational database into a native vector database. It allows you to store, index, and query...
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Week 2 | Day 3 | Embedding Models + Similarity Search
Embeddings and similarity search turn human language or images into lists of numbers. They find matching content by measuring meaning instead of matching...
Week 2 | Day 2 | Embeddings Fundamentals
Learn FastAPI application structure Dependency injection Pydantic request and response models Environment-variable management Build Create GitHub...
JWT vs Session-Based Authentication — A Backend Engineer’s Mental Model
Authentication is not just about logging users in — it’s about how identity is maintained across requests.
Pagination Strategies in Backend Systems: Offset vs Cursor
When building APIs or data-heavy applications, pagination is not optional—it’s a necessity. Whether you’re loading a social media feed, listing users, or...
Database06
Composite vs Single-Column Indexes: Optimize Your Query Performance
Composite indexes optimize multi-column queries, but their effectiveness depends on column order. I follow the leftmost prefix rule and ensure equality...
Python Interview Questions Asked Most Frequently
Master the most common Python interview questions with concise explanations and real-world examples tailored for backend and full-stack roles. This guide...
Python and Backend Engineering Interview Question
Short, practical Python backend engineering interview questions to help you quickly prepare for coding rounds, system design, and real-world backend challenges.
DevOps09
How to Install and Use Pyenv for Python Version Management
Managing multiple Python versions can be challenging, especially when different projects require different Python environments. Pyenv is a lightweight,...