Here is Module 2 of the course. This module covers the single most common stumbling block for new LangGraph developers.
Module 2: The Memory (Solving Amnesia)
In Module 1, we built a graph where data flowed from Node A to Node B. But there was a hidden flaw in that design.
If you are building a chatbot, you need to store a history of messages:
User: “Hi”
Bot: “Hello”
User: “My name is Bob”
In a standard Python dictionary, if you update a key, the old value is gone. In this module, we will learn how to make LangGraph remember rather than replace.