CodStak

Understanding Proxies and Reverse Proxies: Your Internet’s Hidden Middlemen

Understanding system design series

Dec 10 • CodStak

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November 2025

Understanding space and time complexity - Part 2 (Recursive functions)

Let’s learn how to calculate s-t complexity of a recursive function.

Nov 8 • CodStak

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Understanding space and time complexity - Part 1

Let’s say we have given JS code:

Nov 5 • CodStak

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September 2025

Big Updates on Codstak: Free DSA Course + Python Support!

Hey Codstak community 👋

Sep 10 • CodStak

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August 2025

System Design 101 — Part 2: High-Level Architecture of a URL Shortener

In the last part, we set the stage for our URL shortener journey.

Aug 15 • CodStak

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July 2025

Comparing Algorithmic Complexities & Real Trade-Offs

In the last post, we covered how to analyze realistic code, simplify time complexity expressions, and introduced space complexity.

Jul 14 • CodStak

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System Design 101: Designing a Scalable URL Shortener (Part 1)

In the last post, we unpacked the core concepts of system design — latency vs throughput, load balancing, caching, the CAP theorem, and scaling…

Jul 8 • CodStak

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June 2025

Going Deeper with Time and Space Complexity

In the last post, we learned the basics of time complexity—from constant time O(1) to exponential O(2^n). Now, let’s take a step further. We’ll explore…

Jun 29 • CodStak

System Design 101: The Core Concepts You Need to Know

In our last post, we talked about why system design matters — not just in interviews but also in the real world.

Jun 25 • CodStak

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Understanding Time Complexity: A Beginner's Guide

Whether you're learning to code, preparing for interviews, or brushing up on algorithm fundamentals, understanding time complexity is crucial.

Jun 22 • CodStak

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Why System Design Matters?

If you’re a software developer aiming to grow beyond just writing functions or shipping features, learning system design is a must.

Jun 18 • CodStak

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Why Bother With Algorithms?

Welcome to the new weekly email series on data structures & algorithms.

Jun 15 • CodStak

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