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@vasanthk
vasanthk / System Design.md
Last active December 3, 2025 19:41
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
@tonybruess
tonybruess / Username limitations for various services.txt
Last active October 3, 2025 16:30
Username limitations for various services
Skype
Min: 6
Max: 32
Can contain: a-z A-Z 0-9 . , _ -
Other: Must start with a letter
Twitter
Min: 1
Max: 15
Can contain: a-z A-Z 0-9 _