First Steps in System Design: Designing Backend Architecture That Stands Out in Interviews

Learn cache strategies that can be utilized in large-scale systems by building them directly with Spring Boot. Understand problem situations like Cache Penetration, Cache Stampede, and Hot Key, and implement resolution strategies.

Modern digital products and services start from small ideas and grow to be loved by millions of users. The key to making this possible is scalable system design. In this course, you will learn the design principles and implementation methods for growing from small to large systems.

# Silicon Valley Internship That Won't Get Cut Even in the AI Era & Complete Course on 30 Big Tech System Designs & Open Source Practical Contributions All students who submit course missions can apply for an AI startup internship in Palo Alto, USA, with exemption from document screening and guaranteed interview opportunities. This course involves designing and scaling 30 real-world system designs based on big tech cases including Netflix, Tesla, Meta, and Tinder. Finally, you'll design your own service from architecture → DB → scaling, contribute to an actively operating open source AI coding agent project (achieving 1.8k downloads per week) to complete your portfolio, and finalize your resume.

In the software system design course taught by Silicon Valley engineers, you will learn the design principles and architectural patterns of large-scale systems and how to build stable and scalable software solutions. In addition, you will cover performance optimization and fault response strategies through practical cases.

CS knowledge lectures on design patterns, networks, operating systems, databases, etc. from the author of the #1 book in Korea, "CS Major Knowledge Notes for Interviews"! Covers all the concepts needed for CS interviews and the latest past questions!

[Interview guide with templates and detailed examples] We'll help you prepare for a stressful interview! A must-read for aspiring developers before an interview☆ An interview expert who has worked at a major British company will teach you the know-how to pass an interview through analysis and strategy. Now, just memorize the interview formula!

Even people who are studying Java for the first time can easily understand it. You'll learn Java through theory with rich explanations and hands-on practice.

Because you never know when or how software will grow, you always need to be prepared to continue growing. This provides one direction for that.

Through this course, you can acquire the concepts and practices of Information Strategic Planning.

This lecture covers how to easily implement game backend systems using UGS (Unity Gaming Service). You will practice essential features such as Guest and Username/Password authentication, game data storage, leaderboards, and Remote Config. UGS has built a perfect ecosystem with Unity, preparing a practical course for easy learning without entry barriers, allowing immediate application to your projects.

It covers thinking. You can logically organize the core and fundamentals of JavaScript. You can organize your own JavaScript experience and thoughts. You can establish the logic of JavaScript technology. You can broaden your perspective on the entire JavaScript. You can prepare for JavaScript technical interview questions.

A course that helps you understand core data structure concepts and practice explaining them verbally in interviews

This covers effective Redis usage, including precautions and applications, illustrated with examples from real-world practice or renowned historical cases.

Regardless of the field! This is a lecture that covers the core fundamentals that developers must know in practice in an easy + code-oriented way. I highly recommend this lecture to all junior developers and job seekers who want to grow.

Learn database design systematically through three stages: conceptual, logical, and physical, and strengthen your capabilities with a practical shopping mall project. Acquire real-world expertise through modern design techniques and the latest trends.

[TPC DB!] A course that allows you to learn database modeling while thinking, learn database modeling step by step, and master everything from database modeling to web programming implementation all at once.

Are you lost while learning web development? I'll help you find your own way. Even if you're not from a computer science background, you can understand how web service architecture works through a short 1-hour lecture.

This course teaches you how to write safe and reliable code in the software development process. Rather than simply stopping at feature implementation, you'll learn programming principles and techniques that can prevent security vulnerabilities and ensure stability. Through hands-on practice and case studies, you can understand security threats that may occur in real development environments and acquire safe coding techniques such as coding rules, input validation, exception handling, and memory management to prevent them. By taking this course, developers will enhance the completeness of their code while gaining practical capabilities to develop software with security and reliability.

"Empowering Your Java Code with AI's Hands and Feet! Practical Agent Development with Kakao PlayMCP and Spring AI" Traditional LLMs have limitations in that they only respond within their trained data, resulting in poor timeliness and accuracy. In this course, you'll learn **MCP (Model Context Protocol)**, the next-generation standard protocol that connects AI with external tools, and build a server that communicates with various platforms including Kakao PlayMCP through a single implementation using Spring AI. Through the 'Proverbs & Psalms Counseling Center (Jamsi)' project, master the entire process from theory to production deployment and platform registration, and grow into a true AI agent developer who can handle tools independently.