This is a collection of pointers to the good system design interview blog posts:

1. URL shortener
2. Login Backend
3. Mini Google Search
4. Mini Youtube
5. Facebook Messenger
6. Mini Uber
7. Mini Twitter
8. Globally Unique ID Generation
9. The Bare Minimum You Need to Know about Load Balancers
10. Server Monitoring System
11. Distributed Top K Frequent Elements in Stream
12. 6 Things You Need to Know About Kafka Before Using it in a System Design Interview
13. Replicated and Strongly Consistent Key-value Store
14. All or None, Ordered Peer-to-Peer Broadcast
15. The Bare Minimum You Need to Know about String Encoding
16. The System Design Ideas Behind Advanced Search Functions
17. System Design Idea: Consistently Route Request Cohort to the Same Server in Production
18. System Design Idea: Cloud Load Balancer Basics
19. Redis Internal
20. Oauth2 Implementation - Ory/Hydra Internal
21. Distributed Consensus - Raft Trilogy [1], [2], [3]
22. Google Spanner Internals
23. Log Structured Merge Tree
24. Append-only Log
25. Graph Database Design
26. Nginx Internals
27. Distributed Streaming Data Processing