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To fix the overwrite issue in lesson 1, we need to tell LangGraph: “When you receive new data for ‘topics’, do not replace the old data. Add it to the old data.” We do this using a Reducer. In Python, the operator.add function adds two lists together ([‘a’] + [‘b’] = [‘a’, ‘b’]). We can … Read more
Let’s look at what happens when two nodes try to write to the same field in the state using the method from Module 1. The Broken Code We want to collect a list of topics. Node 1 finds “AI”. Node 2 finds “Crypto”. The Result What happened to “AI”? It was deleted. When Node B … Read more
The most important concept in Module 1 is the State Schema. In Python, you can pass any variable to any function. In LangGraph, the State is strict. If you try to pass data that isn’t defined in your TypedDict, it vanishes (or causes errors depending on validation). Let’s see what happens when we try to … Read more
In a standard script, you call function A, get the result, and pass it to function B. In LangGraph, you don’t call functions directly. You place them on a “board” (the Graph) and draw lines between them. The Graph manages the execution. The 4-Step Recipe Every LangGraph application follows the exact same 4-step structure: The … Read more
Overview I have a docker server so I want to setup monitoring for my docker containers. I tried grafana before but didn’t like the stack much. I love dozzle but it lacks persistence. So, I tried vector & victorialogs and the combo worked quite well so far. The setup I only need two files: vector.yaml … Read more
If you encounter this error on arch and already spent 10 hours finding the fix. And almost switch to another distro Here is the fix I didn’t come up with this fix, all thanks to this golden heart just saved me from another hours installing ubuntu https://forum.artixlinux.org/index.php?PHPSESSID=g7k4i3880b6lvhl2cs97phocbj&topic=5944.msg37097#msg37097 Thanks! Đạt TrầnI build softwares that solve problems. … Read more