module Freno class Throttler # A CircuitBreaker is the entry point of the pattern with same name. # (see https://martinfowler.com/bliki/CircuitBreaker.html) # # Clients that use circuit breakers to add resiliency to their processes # send `failure` or `sucess` messages to the CircuitBreaker depending on the # results of the last requests made. # # With that information, the circuit breaker determines whether or not to # allow the next request (`allow_request?`). A circuit is said to be open # when the next request is not allowed; and it's said to be closed when the # next request is allowed. # module CircuitBreaker # The Noop circuit breaker is the `:circuit_breaker` used by default in # the Throttler # # It always allows requests, and does nothing when given `success` or # `failure` messages. For that reason it doesn't provide any resiliency # guarantee. # # See https://github.com/jnunemaker/resilient for a real ruby implementation # of the CircuitBreaker pattern. # class Noop def self.allow_request? true end def self.success; end def self.failure; end end end end end