LLD - Design — Library Management System
A notification system's dispatcher is not sending notifications. Which of the following is the most likely cause?
A notification system's dispatcher is not sending notifications. Which of the following is the most likely cause?
medium📝 Analysis Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Identify dispatcher dependency on message queue
The dispatcher sends notifications by consuming messages from the queue.Step 2: Analyze other options
User database corruption or missing templates may cause errors but not prevent dispatch if messages exist; event generator overload affects event creation, not dispatch.Final Answer:
Message queue is empty -> Option AQuick Check:
Dispatcher sends from queue = Empty queue stops dispatch [OK]
Quick Trick: Dispatcher needs messages in queue to send notifications [OK]
Common Mistakes:
MISTAKES- Blaming user database for dispatch failure
- Confusing event generator overload with dispatch
- Ignoring empty queue as cause
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