Equipping Developer Fundamentals - Essential Concepts and Core Theories for Programming Development

Many backend developers use Redis, but in reality, they often use it merely as a simple cache server. There are many cases where developers know Redis data types but don't know how to apply them in practice, lack experience implementing real-world patterns like Distributed Locks or Rate Limiting, or fail to understand Redis from a backend architecture perspective. I also had the experience of struggling with how to utilize Redis in a high-traffic environment while developing actual services. This is because simply knowing the commands is a completely different story from solving service problems using Redis. This course starts with the basic concepts and data structures of Redis and progresses through learning by implementing core patterns used in actual backend services step-by-step. In particular, you will learn how to solve the following practical problems using Redis: Caching (Cache-Aside) strategies to reduce server load Distributed Sessions (Session Store) to share login states Distributed Locks to solve concurrency issues Rate Limiting to prevent API overload Real-time ranking systems (Leaderboard) for large-scale users All hands-on exercises are conducted in a real API server environment based on Python FastAPI. Rather than just learning simple CLI commands, you will understand how Redis is used in backend systems by implementing it yourself. Through this course, you will be able to utilize Redis not just as a simple cache, but as a core tool for designing backend architectures.

We'll teach you the true essence of object-oriented programming. Knowing terms and syntax like class, object, self, super(), and interface doesn't mean you understand object-oriented programming. Object-oriented programming is not simply a collection of syntax, but rather a philosophy on how to solve the problems of increasingly complex software. You can only use it properly when you understand the history and philosophy behind it. In this course, we first explain what problems object-oriented programming was created to solve, and what kind of thinking and design philosophy it embodies, independent of any specific language. Then, using Python as a tool, we gradually cover through hands-on practice how object-oriented concepts are designed and implemented in actual code. Through this course, you'll gain not object-oriented programming that merely follows syntax, but object-oriented programming that you can think through and design, and object-oriented thinking skills that remain solid even when the language changes.

Python is a versatile language. You can create applications in various fields, from website development to work automation, data analysis, and artificial intelligence development. Just as foundation work is important for building a good structure, you need solid fundamentals to create good programs. This course will firmly establish Python's basic syntax and usage through theory and practice.

This lecture will teach you how to systematically analyze and organize the core functions and conditions of software, and explain the theoretical background of its relationship with testing for finding and improving bugs based on this.

We cover ASP.NET Core, which is mainly used by foreign companies and large corporations.

If you are seeing this email today, saying, “After careful consideration, we regrettably decided not to proceed with the next process with ooo,” don’t miss out on Pro-Igicler’s developer know-how!!

In the cloud field, we deliver the overall background of Microservice Architecture (MSA), a hot keyword, along with various architecture patterns, application types, and legacy conversion methods through real-world insights.

This is a lecture on technical interview questions that will help you double your salary in just two years. I will share my experience from over 20 interviews.

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.

Are you feeling anxious because you've only been following along and copying code? We’ve packed this with the core principles of how the web works and the criteria for choosing technologies, without just focusing on implementation. From foundational concepts to React 19 and Vite 7, we will help you draw the big picture for frontend development in 2026!

Here are some tips for interviewing developers that you won't find on the internet. This is the essence of preparing for the web development hiring process.

Many backend developers use Redis, but in reality, they often use it merely as a simple cache server. There are many cases where developers know Redis data types but don't know how to apply them in practice, lack experience implementing real-world patterns like Distributed Locks or Rate Limiting, or fail to understand Redis from a backend architecture perspective. I also had the experience of struggling with how to utilize Redis in a high-traffic environment while developing actual services. This is because simply knowing the commands is a completely different story from solving service problems using Redis. This course starts with the basic concepts and data structures of Redis and progresses through learning by implementing core patterns used in actual backend services step-by-step. In particular, you will learn how to solve the following practical problems using Redis: Caching (Cache-Aside) strategies to reduce server load Distributed Sessions (Session Store) to share login states Distributed Locks to solve concurrency issues Rate Limiting to prevent API overload Real-time ranking systems (Leaderboard) for large-scale users All hands-on exercises are conducted in a real API server environment based on Python FastAPI. Rather than just learning simple CLI commands, you will understand how Redis is used in backend systems by implementing it yourself. Through this course, you will be able to utilize Redis not just as a simple cache, but as a core tool for designing backend architectures.

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.

You can learn about the basic structure and operating principles of computer hardware, design methods, and OS, and acquire the knowledge necessary to create good programs.

You can learn the basics of AWS and Terraform usage simultaneously. You can become familiar with them through hands-on practice.

Have you ever had a hard time because you didn't understand IT infrastructure (server, network, storage, etc.) technology? Do you want to understand how IT infrastructure is structured and what technologies are applied? This is the only lecture in Korea that explains the various technologies that make up IT infrastructure!

This lecture explains the principles of computer architecture, which is the knowledge underlying programming, for non-majors. The goal of the lecture is to become familiar with the principles of program operation.

It improves logical thinking skills and cultivates the ability to integrate one's major with information and communication technology in the era of the 4th Industrial Revolution.

Have you learned C++ and Java separately but felt confused about why they were designed differently? This course compares both languages simultaneously, helping you fully understand object-oriented structure, memory, and operational principles. Beyond simple syntax, you will gain a deep understanding through hands-on practice of: ✔ Compilation structures ✔ Memory model differences ✔ Internal workings of inheritance and polymorphism ✔ Virtual tables and JVM architecture Additionally, we provide a 'Python-based code comparison auto-generator tool' to help you visually understand the conversion structure between C++ and Java. We will elevate your skills from simply "using" object-oriented programming to a level where you can "design and explain" it.

We explain the core concepts of computer architecture and operating principles that SW developers need to know, using easy-to-understand illustrations.

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

I'll show you how to use Redis effectively, along with its precautions and best practices, using real-world examples from actual work environments and well-known case histories.

It improves logical thinking skills, develops an understanding of how to use programming tools, and develops the ability to design algorithms for problem solving.