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Software Engineering

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Interview Questions

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

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Hundreds of questions with high-quality answers

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Software engineering learning resources and classic software engineering book summaries

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Latest Articles

How Should Software Engineers Conduct Incident Reviews?

Learn why incident reviews matter and how to run them without blame. This article explains the core purpose of postmortems and shares industry examples of building safer systems through learning.

How to Take Better Technical Notes

This article explains why technical notes should be more than storage and retrieval for software engineers. It argues that effective note-taking is a thinking process, then shows how to apply the Cornell Method in practice by writing questions first, updating understanding as you learn, and summarizing your own insights.

What is Blast Radius? How to Strategically Reduce It?

Explore the concept of blast radius in software engineering and discover how to effectively reduce the impact scope of incidents through isolation, redundancy, and other strategies. This article introduces industry best practices for extreme fault tolerance that help teams manage unforeseen failures.

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.