Shaza’s Substack

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Tools in LangGraph
The tool in LangChain links a Python function with a schema, defining its name, description, and arguments. This schema is passed to chat models…
 • Shaza Ali
Type Safety in LangGraph: When to Use TypedDict vs. Pydantic
Lightweight state typing with TypedDict vs. strict validation with Pydantic : how to combine both for reliable workflows.
 • Shaza Ali
Python Playwright Tutorial: Browser Automation
A step-by-step tutorial on web scraping, testing, and browser automation with robust selectors, file downloads, and real-world examples.
 • Shaza Ali
Hybrid Approach (MCP + RAG)
How Combining Structured Data (MCP) and Knowledge Retrieval (RAG) Makes AI Assistants Smarter
 • Shaza Ali
How to Track Backend Events in Mixpanel Using NestJS and GraphQL
Understand why backend teams should care about product analytics — and how to implement Mixpanel tracking that goes beyond the frontend.
 • Shaza Ali
Speeding Up Slow Queries: A Real-World Case Study
How I Cut Query Time from 30+ Seconds to Just 2-3 Seconds: A Step-by-Step Optimization Journey
 • Shaza Ali
Prisma: A Comprehensive Guide to Managing Relationships with set, deleteMany, and disconnect
Prisma: set, deleteMany, and disconnect
 • Shaza Ali
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