r/SystemDesignConcepts is a subreddit with 12k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses system design, caching, database, microservices, and scaling.
This community is about sharing concepts and ideas about system designs of digital applications.
Popular Themes in r/SystemDesignConcepts
#1
Solution Requests
: "Resources to study and understand System Design and Architecture"
25 posts
#2
Advice Requests
: "Introduction to System Design"
24 posts
#3
Pain & Anger
: "New System Design Problem: Stock Exchange"
9 posts
#4
Self-Promotion
: "I hired 100+ engineers and got tired of gatekeeping - Sharing my complete System Design prep materials for FREE"
4 posts
#5
Ideas
: "Feedback required for the system design for learning management system"
2 posts
#6
Opportunities
: "Re-evaluating Fan-Out-on-Write vs. Fan-Out-on-Read Under Celebrity Traffic Spikes (2025)"
1 post
Popular Topics in r/SystemDesignConcepts
#1
System Design
: "I hired 100+ engineers and got tired of gatekeeping - Sharing my complete System Design prep materials for FREE"
78 posts
#2
Caching
: "Improve your application performance with multi-level Caching"
8 posts
#3
Database
: "Tumblr Shares Database Migration Strategy With 60+ Billion Rows"
8 posts
#4
Microservices
: "Monolithic vs Microservices Architecture"
5 posts
#5
Scaling
: "The Differences Between Horizontal and Vertical Scaling: What You Need to Know | System Design"
5 posts
#6
Scalability
: "What's the use of DNS for Scalability?"
4 posts
#7
Github
: "System design cheatsheet - Github"
3 posts
#8
Low Level Design
: "Best book on Low-Level design for system design interviews and software engineering"
2 posts
#9
Algorithm
: "Algorithm for Assigning Flights to Planes"
2 posts
#10
Local
: "Practical videos on how to setup a super scalable system in Local"
2 posts
Member Growth in r/SystemDesignConcepts
Yearly
+3k members(29.5%)
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Last updated: June 1, 2026