LLD - Design — Hotel Booking System
Which component is essential for performing availability checks in a distributed system?
Which component is essential for performing availability checks in a distributed system?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the role of components in availability checking
An availability service or registry keeps track of resource states to answer availability queries.Step 2: Evaluate options
Load balancers distribute traffic but don't check availability of individual resources; backups and authentication are unrelated.Final Answer:
Availability service or registry -> Option AQuick Check:
Availability checking needs a registry service [OK]
Quick Trick: Availability checking needs a registry or service [OK]
Common Mistakes:
- Choosing load balancer as availability checker
- Confusing backup with availability
- Selecting authentication module incorrectly
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