*A Challenging 2nd and 3rd Quarter of 2025 Unlike the first quarter, which was more satisfying than expected, the second and third quarters left me with some regrets. In particular, even though I ...

Let’s Understanding `SubGraph` in LangGraph.

Let’s Understanding `Agent Workflow` in LangGraph.

Let’s Understanding `Agent-like Workflow` in LangGraph.

Let’s distinguish `Agent Workflow` vs `Agent-like Workflow` before diving into LangGraph.

Let’s Understanding add_messages to merge two lists of messages in LangGraph

Let's undestand langchain_core.messages.

From May 14 to 15, 2025, I attended the AWS Summit Seoul, held at COEX. Although the event is held annually, this was my first time attending. As I mentioned in a previous post, I try to participat...

Let's undestand LangGraph.

Let’s Understanding Python typing tools and Pydantic models.

Let's explore AI Agents.

Let's build custom tools in LangChain.

Let's explore various built-in tools.

Let's Understand `Hit` and `Hits` in PyMilvus Search Results

Let's Learn the key differences between Sync and Async in FastAPI.

Let's learn the Lifespan

Let's use middleware in FastAPI.

Let's learn Response Models for Clean and Secure APIs

Let's use HTTP Methods

Let's return Custom Response

Let's learn `requests`, `httpx`, and `aiohttp`

Let's learn how to organize a scalable FastAPI using APIRouter.

Let's learn request and response.

Let's install and use FastAPI.

A Fulfilling First Quarter of 2025 The first quarter flew by like a whirlwind. At the end of last year, I set new goals for myself, wondering, “Can I really follow through on all of this?” But to ...

Let's implement a simple project.

Let's learn the basic syntax of svelte.

Let's learn the basic syntax of svelte.

Let's learn the svelte framework.

Let's Learn Svelte and SvelteKit.

Let's install Node.js(npm, npx) and Learn to create a Project.

Let’s Use Svelte Like This

I attended the AW2025 Smart Factory / Automation Industry Exhibition, which was held at COEX from March 12 to 14, 2025. Although it’s an annual event, this was my first time visiting. Why I Attend...

Let’s run the OpenWebUI container after building the Docker image.

Let's run Ollama Container on a specific isolated (air-gapped) server.

Let's run Ollama Container on a specific server.

Let's run Ollama Container on a server.

Let's load a prompt files and build LangChain with ChatOllama.

Let's create a prompt manually and build LangChain with ChatOllama.

Let's compare between models registered in Ollama

Let's connect Ollama on Server.

Let's install Ollama on Windows and Ubuntu

Let's identify the differences in prompt formats based on LLM models.

Let's create a prompt manually and build LangChain.

Let's write code to create a LangChain using ChatOllama.

Let's write code to create a LangChain using My Own Custom class,ChatBrainAI

Let’s write code to create a LangChain using Hugging Face Transformers.

Let’s Use RAG Like This

Let's use ASCII Art.

Looking Back on 2024 2024 was a year that brought both significant setbacks and newfound hope into my life. Time truly flew by. At the end of 2023, amidst an organizational restructuring within my...

Let's analyze my blog using GA4.

Let's analyze my blog using GA4.

Let’s explore regular expressions with confidence.

Let's Understand `[result]` and `list(result)` in Python

Let's check the results immediately without restarting the kernel.

Let's learn the Difference Between dictionary and JSON

Let's use `typing`.

Let's use `raise`.

Let's use `os` module.

Let's search data in collection.

Let's insert data in collection.

Let's create collection and index in Milvus.

Let's install Milvus and MinIO and Attu.

Let's check account information in MySQL.

Let's install MySQL.

Let's study Commands.

Let's study ShellScripts.

Let's learn Docker Compose commands.

Let's limit container resources.

Let's use Container Volume, a essential concept for data persistence.

Let's learn Docker commands to build a image and to run a container.

Let's learn Dockerfile commands to Write a Dockerfile.

Let's write a Dockerfile and build a image and run a container.

Let's Understand the Features of Docker Image Layers.

Let's Understand the Features of Linux/Docker Container.

Let's Manage WSL(ext4.vhdx) properly.

Let's Install Ollama on Ubuntu

Let's Use GPU on Docker Container

Let's Install Git on Ubuntu.

Let's Install MiniConda3 on Ubuntu.

Let's Install Docker Engine on Ubuntu.

Let's manage Ubuntu history, just like snapshots in VirtualBox.

Let's Install Linux on Windows 10 (11) Using WSL Virtualization.

Let’s Use Docker