THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Motivation
Cache encryption key rotation required in case of it compromising or at the end of crypto period (key validity period). in addition, such feature is required to provide support for encrypt and descrypt existing caches in the future.
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This strategy requires changing the format of the encryption page to store the identifier (number) of the encryption key.
Comparison
| in place | copy | |
|---|---|---|
| IO volume | 2+ | 2 |
| overhead | yes(1-2 bytes per page) | no |
performance(rough estimate) | slower | faster |
Implementation complexity (rough estimate) | ||
| online updates | simple | complex |
| topology changes | simple | complex |
Copy with re-encryption design.
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Overview
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