Multiple quotas per user

[nvartolomei]

Current quotas can be either keyed or non-keyed. I'd like to be able to have both for the same user.

Say a ClickHouse is shared between 2 customer facing services, we can limit to some degree impact of a service by using per user (ClickHouse user) quotas. On the other side we can limit customers impact on the cluster by imposing limits using quotas and making the quota <keyed />.

I'd like to define both. Have a per-customer (quota key) quota and a global service quota (ClickHouse user).

[alexey-milovidov]

That will be useful. Although quotas mechanism is not under development right now. We hope that we can do major refactoring on quotas/events/limits, but please don't wait for it. Minor changes are welcome.