kan01234 - Software Engineer Notes
A backend engineer's journey of learning and growth.
Recent Posts
- Why Elasticsearch Is Fast and How It Stores Data 2025-08-31
- Solving High CPU Usage in Java Applications 2025-08-29
- Migrating from IaaS to CaaS: A Practical Guide 2025-08-24
- How MySQL (InnoDB) Fetches Records Using Indexes 2025-08-23
- How Redis Achieves O(1) Operations — And When It Doesn't 2025-06-25
Personal Journey
- Does Specific Programming Language Experience Really Matter for Senior Software Engineers?
- Navigating Large Numbers in Online Assessments: A Deep Dive
- Behind the Code: A New Adventure
Monitoring & Observability
- Enhancing Monitoring with Datadog: Logs, APM, and Metrics
- Monitoring Fundamentals: Building a Strong Foundation
- From Self-Managed ELK to Datadog: Our Migration Journey
Web & Network Protocols
Datastore
- Why Elasticsearch Is Fast and How It Stores Data
- How MySQL (InnoDB) Fetches Records Using Indexes
- How Redis Achieves O(1) Operations — And When It Doesn't
- InnoDB vs MyISAM: Choosing the Right MySQL Storage Engine
- Debunking the Myth: Yes, MySQL Can Handle 20 Million+ Records in a Single Table
- Bitmap Indexing: A Deep Dive for Data
System Design
- System Design: Building a Fair and Scalable Gacha System for Mobile Games
- System Design: How to Build a URL Shortening Service at Scale
- System Design: Scale the QR Code Payment System using the Saga Pattern
- System Design: QR Code Payment System (Synchronous Version)
- Clarifying Upstream and Downstream in Software Development
- Understanding Consistent Hashing: From Basics to Real-World Use Cases
- Remote Log Retrieval for Linux-Based Edge Devices: A System Design Approach
- MQTT: The Lightweight Backbone of the Internet of Things
Infrastructure & Platform Engineering
- Migrating from IaaS to CaaS: A Practical Guide
- Comparing CaaS Platforms: AWS Fargate, Azure AKS, Google GKE, and Private Cloud Kubernetes