Practical Elasticsearch Introduction for Immediate Use (Search Optimization Edition)

I've created a Docker beginner/practical course that even non-majors can easily understand and apply directly in real-world situations!

I've created an AWS intro course, easy for non-specialists to understand and immediately applicable!

Created a 'Kubernetes Intro/Practical' course: easy for non-majors, immediately practical!

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I've created the '대규모 트래픽 처리를 위한 부하테스트 입문/실전' lecture, easily understandable even for non-majors and immediately applicable in practice!

Even for non-majors, easy to understand and immediately applicable in practice, I've made the 'Nginx Intro/Practical' course!

I've created a 'Developer Resume/Portfolio Writing' course for non-majors to pass document screening!

I've created a 'Kafka Introduction' course that is easy for non-technical users to understand and immediately applicable in practice!

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I've created a 'Redis Introduction/Practical (Query Performance Optimization)' course that non-majors can easily understand and immediately apply in practice!

For IT alliance club members struggling with cover letter writing, we've prepared 13 successful samples!

I've created a 'Kafka Introduction' course that is easy for non-technical users to understand and immediately applicable in practice!

I've created the '대규모 트래픽 처리를 위한 부하테스트 입문/실전' lecture, easily understandable even for non-majors and immediately applicable in practice!

I've created an introductory CI/CD course that's easy for non-majors to grasp and immediately applicable in practice!

We'll show you a quick and easy way to implement CircuitBreaker to create a fault-tolerant service.

Learn how to easily integrate ChatGPT API using SpringAI and develop AI servers through prompt engineering!

This course is perfect for business professionals who want to acquire practical database design skills in a short period of time, or for those aiming to develop original applications. By learning the data structure design thinking that professional engineers actually use, you can acquire knowledge that can be immediately applied to the development and improvement of apps and services!

From log recording to collection and utilization, it covers the whole cycle.

Learn SAGA transaction management techniques for maintaining data consistency in distributed environments through hands-on practice. Configure three microservices using Spring Boot and Docker, and implement both Orchestration and Choreography patterns with Kafka and MySQL. Through this course, you can master core concepts that are immediately applicable in real-world scenarios, including distributed transaction operation principles, compensating transaction design, and failure recovery handling.

This is a full-stack hands-on course where you'll clone ChatGPT and implement everything from scratch. From Spring Boot server to React frontend! This isn't just a course where you follow along with code, but one that guides you to build a high-quality AI chatbot service through actual service deployment.

Spring AI + JPA + MySQL Premium Reservation Agent Backend Development with 'Autonomous Behavior' Beyond Chatbots to Agents: The Definitive Guide to Tool Calling and Prompt Engineering

Experience the power of Type Safe SQL with jOOQ!

# Building an 'Intelligent Collaboration' Expert Agent Team Using Spring AI Router Pattern + RAG + MCP Beyond Single Agents to Architecture: The Definitive Guide to Router Pattern and Agent Isolation Design

Learn the basic data structures of REDIS and examples of practical use of REDIS through redis-cli (command) practice.

Building a 3D Globe Article Service with ThreeJS and SpringAI Create your own 3D globe article service using your personal chatbot and ThreeJS!

Understanding Spring Boot + React.js Login (+Social) Service is a course designed to help you deeply understand the authentication flow between frontend and backend, by directly implementing a practical login system that includes JWT-based authentication and social login (Kakao/Google). The frontend is built on React.js, and the backend on Spring Boot, enabling you to learn step by step the practices used in real service environments, such as the Access Token + Refresh Token approach, user state management using HttpOnly Cookie and Redux, Role-based authorization, and social login integration.

You can learn about IAM, the foundation of AWS Zero Trust, from the basics to the details. This will help you understand what parts are actually vulnerable and where you need to pay more attention.

Learn cloud infrastructure automation technology using AWS and Terraform, and practice efficient infrastructure management and deployment. Manage AWS resources as code through Terraform, and learn how to deploy consistent infrastructure across various environments.

It explains almost everything surrounding the cloud in an easy-to-understand manner. If you listen to it before the actual practice, you will be able to understand development or infrastructure cloud well.

Learn Springboot + Flutter RestAPI Board Creation Faster Than Anyone Develop a CRUD server with Springboot and create your own board with Flutter!