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AI Illustrated Series
AI Illustrated Series
Apr 28, 2026 · Artificial Intelligence

Comprehensive Interview Guide: LangChain & LangGraph Frameworks

This article provides a detailed, question‑and‑answer style walkthrough of LangChain and LangGraph, covering their core concepts, components, workflow patterns, memory mechanisms, LCEL syntax, graph construction, conditional edges, loops, multi‑agent collaboration, persistence, and a comparison with LlamaIndex, offering concrete code examples and practical insights for AI interview preparation.

AI FrameworkAgentLCEL
0 likes · 32 min read
Comprehensive Interview Guide: LangChain & LangGraph Frameworks
James' Growth Diary
James' Growth Diary
Apr 10, 2026 · Artificial Intelligence

Build Your First Production‑Ready LCEL Chain with the Pipe Operator

This tutorial walks through LCEL’s pipe operator and its underlying RunnableSequence, then demonstrates sequential, parallel, and lambda‑based chains, shows how to preserve context with RunnablePassthrough/Assign, compares invoke/stream/batch execution modes, and provides a complete production‑grade RAG chain with common pitfalls and a self‑check checklist.

AILCELLangChain
0 likes · 12 min read
Build Your First Production‑Ready LCEL Chain with the Pipe Operator
BirdNest Tech Talk
BirdNest Tech Talk
Oct 30, 2025 · Artificial Intelligence

Master LangChain Chains with LCEL: From Simple Jokes to RAG and Agent Pipelines

This guide explains how LangChain’s Expression Language (LCEL) lets you declaratively connect prompts, models, and output parsers into chains, walks through environment setup, dependency installation, and detailed code examples ranging from a basic joke generator to retrieval‑augmented generation and memory‑enabled agents.

AgentLCELLangChain
0 likes · 5 min read
Master LangChain Chains with LCEL: From Simple Jokes to RAG and Agent Pipelines
Code Mala Tang
Code Mala Tang
Sep 12, 2024 · Artificial Intelligence

Unlocking LangChain.js: The Swiss Army Knife for LLM Applications

This article introduces LangChain.js, explains its origins, core concepts such as chats, templates, tools, and chains, demonstrates practical JavaScript code examples, and explores the LangChain Execution Language (LCEL) for building flexible, conditional AI workflows.

AI workflowLCELLLM
0 likes · 17 min read
Unlocking LangChain.js: The Swiss Army Knife for LLM Applications
Code Mala Tang
Code Mala Tang
Sep 7, 2024 · Artificial Intelligence

Unlocking LangChain.js: The Swiss Army Knife for LLM Applications

This article introduces LangChain.js, its core concepts such as chats, templates, tools, and chains, demonstrates how to use LCEL for flexible workflow composition, and shows practical JavaScript code examples for building AI-powered applications with large language models.

AI workflowLCELLLM
0 likes · 17 min read
Unlocking LangChain.js: The Swiss Army Knife for LLM Applications