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Designing a User Online/Offline Presence System: From Naive Polling to Redis TTLs

Designing a User Online/Offline Presence System: From Naive Polling to Redis TTLs

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6 min read
When "saved" does not mean saved

When "saved" does not mean saved

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4 min read
Foundgine: Why Another Data Framework?

Foundgine: Why Another Data Framework?

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5 min read
How Netflix Doesn't Crash During Peak Hours (Cloud Concepts) ! đŸ˜±

How Netflix Doesn't Crash During Peak Hours (Cloud Concepts) ! đŸ˜±

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3 min read
The Backend Patterns I Wish I Learned Earlier

The Backend Patterns I Wish I Learned Earlier

Comments 3
6 min read
Designing Software That Gets Faster as It Gets Bigger

Designing Software That Gets Faster as It Gets Bigger

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6 min read
The 837/999 HIPAA Acknowledgment Loop

The 837/999 HIPAA Acknowledgment Loop

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7 min read
Why AI Can't Save You From Not Understanding Your Own System

Why AI Can't Save You From Not Understanding Your Own System

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5 min read
Rogers TMM4 PCB Design: 8 Manufacturing Decisions That Affect RF Performance

Rogers TMM4 PCB Design: 8 Manufacturing Decisions That Affect RF Performance

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7 min read
I Got Tired of “Practice System Design” Meaning Watch Another YouTube Walkthrough

I Got Tired of “Practice System Design” Meaning Watch Another YouTube Walkthrough

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2 min read
A Transition Ledger for Debugging a Five-Wave Godot Dungeon Loop

A Transition Ledger for Debugging a Five-Wave Godot Dungeon Loop

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4 min read
Design Systems Explained

Design Systems Explained

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5 min read
Building Reliable Event-Driven Systems: Event Schemas, Versioning, Contract Testing and Events vs Commands (5/5)

Building Reliable Event-Driven Systems: Event Schemas, Versioning, Contract Testing and Events vs Commands (5/5)

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3 min read
REST vs GraphQL vs gRPC in 2026: An Architect's Decision Matrix

REST vs GraphQL vs gRPC in 2026: An Architect's Decision Matrix

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6 min read
LLD Data Structures in Design Context: Real-World HashMaps — Sessions, Caches, Indexes and Design Trade-offs

LLD Data Structures in Design Context: Real-World HashMaps — Sessions, Caches, Indexes and Design Trade-offs

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5 min read
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