multi-tenant and use of ruby delegate vs NoSQL for tenant context -

i have multi-tenant app (rails backend) , need mix tenant-agnostic pre-populated list of items tenant specific attributes.

was wondering if has used delegate done , had ok performance vs. venturing out of postgres mongodb

example models:

class equipmentlist < activerecord::base   attr_accessible :name, :category_id    has_one :tenant_equipment_list    delegate :alt_name, to: tenant_equipment_list  end  class tenantequipmentlist < activerecord::base   attr_accessible :alt_name, :group, :sku, :est_price, :equipment_list_id    belongs_to :equipment_list    default_scope { where(tenant_id: tenant.current_id) } end 

i've run on low traffic site. rails end handles pretty in outputting json.

realized better use tenant version foreign key , delegate master attributes tenant. looks this:

class equipmentlist < activerecord::base   attr_accessible :name, :category_id    has_one :tenant_equipment_list    end  class tenantequipmentlist < activerecord::base   attr_accessible :alt_name, :group, :sku, :est_price, :equipment_list_id    belongs_to :equipment_list    delegate :name, to: tenant_equipment_list #prefix: true if want    default_scope { where(tenant_id: tenant.current_id) } end