`module Balance`

Built-in backend selection policies.

Nested Classes and Modules

class Spread: Prefer the backend with the fewest active requests.
class Pack: Prefer a backend which is already processing the same class of work.

Definitions

`def self.coerce(policy, **options)`

Resolve a built-in policy name or validate an application policy object.

Signature

parameter　policy　Symbol | #select: The policy name or object.
parameter　options　Hash: Options for a built-in policy.
returns　#select: The resolved balance policy.

Implementation

def self.coerce(policy, **options)
	case policy
	when :spread
		Spread.new(**options)
	when :pack
		Pack.new(**options)
	else
		unless policy.respond_to?(:select)
			raise ArgumentError, "Balance policy must respond to #select!"
		end
		
		policy
	end
end