add multi-tenancy-draft-design doc #393
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coocood
changed the title
gregwebs
reviewed
Sep 8, 2020
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| ### Quota | ||
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| quota limits the resource usage of a tenant, there are three type of quota: |
yiwu-arbug
reviewed
Sep 9, 2020
| ### Security | ||
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| - Communication layer security can be ensured by TLS. | ||
| - SST do not do any encryption, only do encrypt on backup. |
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we can have encryption-at-rest for the whole DB, with encryption key managed by us, just that user provided encryption key is not supported.
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I don't think we can decide "not support user-provided encryption key", but the PM
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Support or not will impact the way we store data.
gregwebs
reviewed
Sep 18, 2020
| We deduct the quota after serving the tenant's request, | ||
| When tenant's quota deducted to zero, we stop serving the request and returns an error. | ||
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| Every tenant has a total quota, PD is responsible to divide the total quota to each KV node that |
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Quotas without scheduling means under-utilization when some tenants are not using their full quota (and other tenants could be bursting to use those resources).
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