Quality of service in a distributed system

A system comprising:

• a memory device;
• and
• a processing device of a distributed storage system, the processing device operatively coupled to the memory device, the processing device to:
• receive a first request, corresponding to a first tenant, to mount a volume within a distributed storage system;
• derive a tenant identifier from an authentication credential, wherein the authentication credential is to authenticate the first request;
• identify, in a quality of service policy for the first tenant, a threshold value associated with a performance parameter of the distributed storage system, wherein the threshold value is provided by one of:
• a minimum threshold value or a maximum threshold value;
• determine an estimated value of the performance parameter in view of a second request initiated by a second tenant;
• and
• responsive to successfully evaluating a validity condition with respect to the estimated value in view of the threshold value, forwarding the second request to a servicing component for execution, wherein the validity condition is provided by one of:
• the estimated value not exceeding the maximum threshold value or the estimated value not falling below the minimum threshold value.

A non-transitory computer readable medium comprising executable instructions that when executed by a processing device, cause the processor device to:

• generate a memory data structure comprising an entry for a tenant of a multi-tenant distributed storage system, the entry comprising an identifier derived from an authentication credential of the tenant, the entry further comprising a threshold value associated with the tenant, wherein the threshold value is provide by one of:
• a minimum threshold value or a maximum threshold value;
• associate a received request with the tenant by matching an identifier associated with the request with the identifier in the entry;
• determine an estimated value of the performance parameter in view of the request;
• and
• responsive to successfully evaluating a validity condition with respect to the estimated value in view of the threshold value, forwarding the request to a servicing component for execution, wherein the validity condition is provided by one of:
• the estimated value not exceeding the maximum threshold value or the estimated value not falling below the minimum threshold value.