LLD - Design — Library Management System
You need to design a notification system that supports millions of users with personalized preferences and multiple delivery channels. Which design choice best ensures scalability and user customization?
Which design choice best ensures scalability and user customization?
hard📝 Trade-off Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Consider scalability requirements
Millions of users require distributed services and sharded queues to handle load without bottlenecks.Step 2: Address user customization needs
Dynamic delivery channel selection per user allows personalized notifications respecting preferences.Step 3: Evaluate other options
Centralized service and single queue create bottlenecks; synchronous sending blocks processing; local files do not scale or support dynamic preferences.Final Answer:
Implement distributed notification services with sharded queues and dynamic delivery channel selection per user -> Option CQuick Check:
Distributed + dynamic preferences = scalable & customizable [OK]
Quick Trick: Distribute services and shard queues for scale and flexibility [OK]
Common Mistakes:
MISTAKES- Choosing centralized design causing bottlenecks
- Using synchronous sending blocking system
- Storing preferences in non-scalable local files
Master "Design — Library Management System" in LLD
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore LLD Quizzes