Series: System Design Foundations

All the articles in the "System Design Foundations" series.

• What Is a Single Point of Failure (SPOF)?

  11 May, 2026

  By Pratik Bhuite | 28 min read

  Series: System Design Foundations

  Learn what a single point of failure (SPOF) is, why it brings down entire systems, and how to eliminate it with redundancy and failover.

  • System Design
  • Scalability
  • High Availability

• What Is High Availability? A Beginner's Guide

  11 May, 2026

  By Pratik Bhuite | 29 min read

  Series: System Design Foundations

  Learn what high availability means, how redundancy and failover work, and why uptime percentages like 99.9% matter for modern systems.

  • System Design
  • Scalability
  • High Availability

• What Is a Reverse Proxy? How It Works (For Beginners)

  10 May, 2026

  By Pratik Bhuite | 32 min read

  Series: System Design Foundations

  What is a reverse proxy? Learn how it routes traffic, hides your origin, handles SSL termination, and differs from a forward proxy.

  • System Design
  • Reverse Proxy
  • Networking

• What Is a CDN? How Content Delivery Networks Work

  8 May, 2026

  By Pratik Bhuite | 29 min read

  Series: System Design Foundations

  What is a CDN? Learn how content delivery networks cache content at edge servers, reduce latency, and protect your origin from traffic spikes.

  • System Design
  • CDN
  • Caching

• In-Memory Cache vs Distributed Cache Explained

  7 May, 2026

  By Pratik Bhuite | 25 min read

  Series: System Design Foundations

  Compare in-memory cache vs distributed cache: speed, scalability, consistency, and when to choose Redis over a local cache.

  • System Design
  • Caching
  • Scalability

• What Is Caching? Why It Improves Performance

  5 May, 2026

  By Pratik Bhuite | 23 min read

  Series: System Design Foundations

  What is caching? Learn how caches work, cache hits/misses, TTL, and common strategies (browser, CDN, Redis) to speed up apps.

  • System Design
  • Scalability
  • Caching

• What Are Sticky Sessions in Load Balancing? (Session Affinity)

  5 May, 2026

  By Pratik Bhuite | 22 min read

  Series: System Design Foundations

  Sticky sessions (session affinity) keep a user on the same backend. Learn how they work, when to use them, and safer stateless alternatives.

  • System Design
  • Scalability
  • Networking

• Horizontal vs Vertical Scaling Explained (Scale Out vs Up)

  5 May, 2026

  By Pratik Bhuite | 22 min read

  Series: System Design Foundations

  Horizontal vs vertical scaling explained: scale up vs scale out, trade-offs for cost, availability, and performance, plus real examples to choose confidently.

  • System Design
  • Scalability
  • Backend

• What Is Load Balancing and How It Works

  3 May, 2026

  By Pratik Bhuite | 19 min read

  Series: System Design Foundations

  What is load balancing? Learn how load balancers work, key algorithms, health checks, and Layer 4 vs Layer 7 trade-offs.

  • System Design
  • Scalability
  • Networking

• What Is Scalability? A Beginner's Guide for Developers

  25 Apr, 2026

  By Pratik Bhuite | 30 min read

  Series: System Design Foundations

  Learn what scalability means in software development, why it matters, and how vertical vs horizontal scaling work - with real-world examples.

  • System Design
  • Scalability
  • Beginner Guide