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Unintended double encryption crippled our search engine performance

algolia.com
17 pointsphilbo2 comments
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Seems like pretty poor documentation by Azure. Encryption and performance are such key architecture concerns, they should be promoting the automatic hardware-based disk encryption as a security and performance feature. Looking at the updated docs, they still don't seem very clear to me.

Great story! Successful cloud performance investigations are always extremely satisfying. I love this conclusion:

It’s a reminder that sometimes performance bottlenecks are hard to diagnose, but with careful debugging, good data, and collaboration with providers, even cloud-level issues can be resolved.

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