Oct 19, 2025 · 3 min read · Imagine you are running a contest on LeetCode or playing a Mobile game like PUBG. Thousands of players are submitting results every second and your app needs to instantly update rankings without overloading your backend or database. How do systems li...
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Sep 12, 2025 · 4 min read · DevOps engineers absolutely benefit from understanding databases. This article shares the highlights and hands-on learnings from a walkthrough of core database concepts, practical tasks, and real infrastructure decisions that shape real world DevOps ...
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Sep 1, 2025 · 10 min read · In the world of modern applications where milliseconds matter and data is explosive, how your database stores, distributes, and retrieves data can make or break performance. We’ve already explored schemas, transactions, and normalization — but now it...
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Aug 12, 2025 · 7 min read · When building an application, speed matters; your users don’t care if your backend is struggling with database queries, they just want instant responses.That’s where Redis shines. In this article, we’ll cover: What Redis is, and how it works under t...
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Jul 25, 2025 · 14 min read · It was the kind of meeting every engineer dreads. The graphs on the projector screen all pointed up and to the right: user growth, requests per minute, revenue. But one graph, database CPU utilization, was hugging the 90% ceiling, and another, p99 re...
Join discussionJul 10, 2025 · 4 min read · I tried implementing a mini in-memory key-value data store that supports transactions, rollback, and commit — just to see how databases handle these operations under the hood. Turns out, it’s a fascinating journey of layers, reversibility, and data i...
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Apr 3, 2025 · 7 min read · Let me tell you a quick story. A team of developers launches a fitness app, and within the first month, it skyrockets to 10,000 users. Everything seems perfect right? …Great! until the app starts slowing down, users complaining, workouts fail to save...
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Mar 31, 2025 · 3 min read · What is Redis? Redis (Remote Dictionary Server) is an open-source, in-memory key-value store known for its speed and flexibility. It is widely used as a cache, message broker, or even a primary database for real-time applications. Unlike traditional ...
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Oct 28, 2024 · 22 min read · Introduction 전통적인 RDBMS 의 특성을 유지하면서도 NoSQL 시스템이 제공하는 확장성과 성능을 제공하기 위한 새로운 유형의 Database 기술입니다. 전통적인 RDBMS 는 ACID (Atomicity, Consistency, Isolation, Durability) 특성을 잘 지원하고, 데이터 Consistency 와 Transaction 을 보장하지만, Horizontal Scaling (즉, 여러 서버로 쉽게 확장하는...
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Oct 25, 2024 · 6 min read · Redis is a popular in-memory key-value store known for its speed and versatility. And yes we can implement our own In-Memory Database. For learning and experimentation, let's build a simplified Redis-like server in Node.js, containerize it with Docke...
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