@aanchalfatwani
Aanchal
@aanchalfatwani
Joined January 2023
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Aanchal's blogs
Recently published
Vector Databases: A Complete Guide (Concepts, Use Cases, Advantages, and Limitations)
Jan 31 · 8 min read · 1. Introduction As AI systems evolved—especially with the rise of machine learning, deep learning, and LLMs (Large Language Models)—traditional databases started showing their limits. Searching exact matches in rows and columns is great, but modern a...
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The Resilience Handbook: A Beginner’s Guide to Retries, Timeouts, and Rate Limiting
Dec 31, 2025 · 6 min read · In the world of web development, the "Happy Path"—where every request succeeds instantly—is a dangerous fantasy. In reality, networks are flaky, servers crash, and APIs get overwhelmed. If your code doesn't account for these failures, your applicatio...
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OAuth Explained: The Complete Guide
Nov 30, 2025 · 6 min read · OAuth (Open Authorization) is an open standard that allows one application to access resources or data in another application on behalf of a user, without needing the user’s password. OAuth is a secure way for apps to access user data from another s...
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Understanding JavaScript’s Event Loop, Web APIs, and Task Queues
Oct 31, 2025 · 5 min read · JavaScript is often described as single-threaded but non-blocking — meaning it can only execute one task at a time, yet it somehow manages to handle multiple asynchronous operations like timers, network requests, and user interactions without freezin...
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