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API Interview questions

Post author:admin
Post category:System Design
Reading time:20 mins read
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REST APIs have become a cornerstone of modern software development, and understanding them is essential for acing any interview in this domain. Here is a carefully curated list of questions…

DSA 16 Patterns

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Post category:DSA
Reading time:50 mins read
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These 16 DSA Patterns Did What 3000 LeetCode Problems Couldn't When I started with DSA, I did what everyone else does. I opened LeetCode. Picked Easy. Clicked "Run". Then "Submit".…

API Design

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Post category:System Design
Reading time:19 mins read
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Designing a good API is a crucial step in building reliable, scalable, and developer-friendly software. A well-designed API acts as a contract between systems, making integration smooth and reducing the…

Java Spring Boot 1M req/sec

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Post category:Java System Design
Reading time:6 mins read
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How I Optimized a Spring Boot Application to Handle 1M Requests/Second Scaling a Spring Boot application to handle 1 million requests per second might sound like an impossible feat, but…

Java main

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Post category:Java
Reading time:7 mins read
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Java Fundamentals: Inside the main() Method The lifecycle of a Class Execution in Java What Happens When We run a Java class with a main the JVM performs several critical steps, from…

Java Constructor

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Post category:Java
Reading time:15 mins read
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Can Constructors Be final or static in Java? It's a common question, especially among beginners learning object-oriented programming. Short answer? Constructors cannot be final… If you've worked with Java for…

Java Libraries

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Post category:Java
Reading time:19 mins read
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Stop Writing Your Own Code — Use These Java Libraries Instead In this article, we'll show you 15 things you should stop building from scratch — and which modern Java tools and libraries to…

java features

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Post category:Java
Reading time:13 mins read
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Step 1: Use the Latest LTS Version Before diving into features, make sure you’re using a modern Java version. ✅ Recommendation: Use Java 17 or Java 21 (both are Long-Term Support versions). Why? Because these…

System Design Questions

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Post category:System Design
Reading time:2 mins read
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Download E-book : Collection of 21 Articles System Design Fundamentals - System Design Interview Roadmap. SECTION 1: FUNDAMENTALS (Articles 1-20 System Design Interviews: A Visual Roadmap The CAP Theorem Explained…

Back-of-the-envelope calculation for system design

Post author:admin
Post category:System Design
Reading time:15 mins read
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In system design interviews and real-world architecture planning, the ability to make quick, reasonably accurate estimations—often called "back-of-the-envelope" calculations—is an invaluable skill. These calculations help you determine whether a proposed…