AWS - Elastic Load Balancing
You want to minimize inter-AZ data transfer costs but still want some load balancing across zones. What is the best approach?
You want to minimize inter-AZ data transfer costs but still want some load balancing across zones. What is the best approach?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand cost impact of cross-zone load balancing
Cross-zone load balancing causes inter-AZ data transfer charges, so disabling it reduces these costs.Step 2: Balance instances evenly across zones
Registering instances evenly ensures traffic is balanced without cross-zone data transfer.Final Answer:
Disable cross-zone load balancing and register instances evenly across zones -> Option CQuick Check:
Even instance distribution + no cross-zone = lower inter-AZ costs [OK]
Quick Trick: Balance instances evenly and disable cross-zone to cut costs [OK]
Common Mistakes:
- Thinking enabling cross-zone reduces costs
- Assuming fewer instances reduce data transfer
- Believing cross-zone can be toggled hourly without impact
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