Level Up Coding System Design Newsletter

SQL vs NoSQL

(5 Minutes) | How to Choose, How Each Works, the Differences, the Benefits, and the Trade-Offs

Oct 25 • 

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2

Strong vs Eventual Consistency in Distributed Systems

(5 Minutes) | The Problem, How Each Works, and the Tradeoffs

Oct 23 • 

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Architecture Patterns Playbook 🚀

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Oct 20

8

How HTTPS Actually Works

(4 Minutes) | How it Works, TLS Handshake, Evolution, and Why it Matters

Oct 18 • 

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2

WebSockets Clearly Explained

(5 Minutes) | How They Work, When to Use Them (and When Not To), the Benefits, and the Tradeoffs

Oct 11 • 

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September 2025

How Message Queues Actually Work

(4 Minutes) | When to Use Them, The Tradeoffs to Watch Out For, and How to Avoid Common Pitfalls

Sep 27 • 

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4

Service Discovery in Distributed Systems Clearly Explained

(5 Minutes) | Client-Side Discovery vs Server-Side Discovery

Sep 20 • 

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2

Forward Proxy vs Reverse Proxy

(4 Minutes) | Core Ideas, Benefits, Trade-offs, Where and When to Use Each

Sep 13 • 

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4

Idempotency in API Design Clearly Explained

(4 Minutes) | When to Use it, How to Implement it, Benefits, Tradeoffs, Decision Table

Sep 10 • 

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3

August 2025

7 Principles of Solution Architecture Design You Should Know

(5 Minutes) | Design principles that keep systems alive when reality hits

Aug 19 • 

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API Gateway vs Load Balancer

(4 Minutes) | How They Work, Benefits, Pitfalls, Where and When to Use Each

Aug 12 • 

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4

July 2025

Concurrency is NOT Parallelism

(4 Minutes) | Concurrency vs Parallelism — They Are Not The Same

Jul 21 • 

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