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Software Engineering

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From frontend, backend to system design, a complete collection of the most common interview questions

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Latest Articles

How to Diagnose Problems and Fix Errors During Incidents?

This article explains how engineering teams can diagnose problems and fix errors in a structured way during incidents. It summarizes the effective troubleshooting approach from Google's SRE book, including triage and examination, diagnosis, hypothesis testing, and the principle of stopping the bleeding before digging into root cause.

Choosing the Right Frontend Rendering Strategy

This article explains the most common frontend rendering strategies, from client-side rendering and traditional server-side rendering to modern SSR with hydration and streaming. It compares their trade-offs in loading performance, SEO, and interactivity so you can choose the right approach for your project.

What Is an SLO? Why SLOs Matter for Software Teams

Learn what SLOs, or service-level objectives, are and why they matter in software reliability engineering. This article explains the differences between SLI, SLO, and SLA, and why teams should use percentiles such as P50, P95, and P99 instead of relying only on averages when measuring reliability.

Feature Articles

[Medium] LeetCode JS 30 - 2625. Flatten Deeply Nested Array

Learn how to flatten deeply nested arrays in JavaScript without using the built-in Array.flat method. This tutorial introduces a recursive approach to flattening multi-dimensional arrays to a specified depth. Enhance your JavaScript skills with this comprehensive guide!

How to remove duplicates from an array?

Learn multiple solutions to remove duplicates from an array efficiently in JavaScript. This tutorial covers four methods: using Set, filter with indexOf, nested for loop, and utilizing Object or Map. Enhance your JavaScript skills and be well-prepared for array manipulation challenges in interviews and real-world scenarios.

The Most Common JavaScript Event Loop Interview Questions

The event loop is a common question in interviews. In addition to knowing the concept, You also need to know how it works in code. Here we have listed common JavaScript event loop code interpretation questions

What is the CSS Box Model?

When the browser engine lays out the document, it will treat each element as a rectangular Box according to the Box Model of CSS. This Box is composed of content, padding, border and margin.