Designing a Ticket Booking System with a Silicon Valley Developer | OpenRig, Claude Code

We have gathered Apache Kafka application programming knowledge used in real environments! We will take a look at and practice various functions of Apache Kafka that are key to building data pipelines.

[Practical Node NestJS Course — Let’s Develop a Service Together!!] Learn Redis and Kafka with Nest, and you’ll be able to do it! Prisma is now absolutely essential in real-world development.

Protect chatbots, RAG, and tool calls integrated with FastAPI from prompt injection, runaway costs, and privilege abuse. Defend them with dependencies, middleware, and tool code; verify your defenses with pytest and 50 security tests; and control releases with GitHub Actions gates. Complete 84 hands-on exercises with no API fees.

Become a backend developer who can explain “why it made that decision” about AI-generated code. Across commerce, payments, advertising, and deployment, we’ll turn the design decisions seniors actually made in the field into 8 modules, real fines and outage cases, and hands-on practice with starter code.

NestJS, the fastest way to help you get started with backend development! Through various hands-on projects, you will quickly learn the backend framework NestJS, TypeORM, and the essential theoretical knowledge that every server developer must know.

This is a practical project course on running Whisper locally and quickly developing an AI speech recognition app using FastAPI and Next.js. You'll implement real-time speech recognition and complete a project that can be used as a simple portfolio piece in a short amount of time.

There are moments when a price changes in another window but doesn’t show up on your screen, even though it says “Connected.” Let’s walk through real execution logs, step by step—from how to choose between polling, long polling, SSE, and WebSocket with two virtual auction windows open, to resynchronizing after a disconnect and tracking changes across multiple servers and proxies.

You will learn about the overall DevOps process, including domain purchasing, deploying Spring Boot production servers using EKS, Docker basics, Kubernetes basics, AWS basics, CI/CD automation via GitHub Actions, ArgoCD, and Prometheus/Grafana.

Build an AI agent from scratch using Python and a single while loop, without any frameworks. In the introductory section, you’ll add tool design, failures and costs, memory, human approval, evaluation, and a web interface one by one to complete a small coding agent. In the hands-on section, you’ll implement RAG, multi-agent systems, and an MCP server yourself using real business reports from DART, then compare them numerically with LangChain and LangGraph.

Redis is a fast and scalable open-source database. This technology is used to maximize performance in real-time applications, games, social media platforms, and more. However, to truly understand the power of Redis and use it effectively, you need a deep understanding. Now is your chance to learn Redis in a professional way. "Redis with Silicon Valley Engineers" covers a wide range of topics, from the core concepts of Redis to advanced features. This course is designed for everyone, from beginners who are new to Redis to advanced users.

From Docker, Kubernetes to microservices, CI/CD, and service mesh, you can easily learn not only the basic theory but also the actual application implementation through examples. By organizing only the core contents necessary for actual use, it provides a starting point for learning about the element technologies covered in the lecture.

⚓Kubernetes (Docker Desktop, Nginx, Minio, Longhorn) 🙇‍♀️Are you still hesitating? 🙋‍♂️Just trust me and follow along! I will take your skills to the ⭐next level.

This is a text-based course that conducts mock interviews based on your résumé.

A Complete End-to-End Developer Journey — Build Lightning-Fast APIs, Modern Frontend Interfaces, Real Projects, Authentication Systems, Dashboards & Full Deployments Using FastAPI, React, and Vibe Coding Techniques.

Learn the basic, essential, and practical knowledge of Kafka that software developers need to know. We will integrate Kafka using Spring Boot and conduct hands-on exercises for sending and receiving messages tailored to various real-world scenarios.

This is a Redis course that you can learn and use right away!

Stop worrying about the dev team - I'll build it myself now! This course helps professionals in planning, marketing, sales, and other practical roles implement core web service features on their own using AI tools, without needing developer assistance.

In this course, you will be able to create a Reddit website from scratch, step by step.

This course goes beyond basic CRUD-level database usage, helping you develop the PostgreSQL skills needed in the AI era from a practical, real-world perspective. Drawing on AI development experience in Silicon Valley, you’ll gradually learn how to design and use JSON, indexes, transactions, and pgvector in actual services, while gaining the skills to solve complex data structure and performance problems.

This course is designed to help you learn the use of ksqlDB and its core mechanisms through various hands-on exercises. After completing the course, you will be able to easily and quickly build a real-time streaming data analysis system based on Kafka.