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This subproject provides a home to modules contributed by external developers which may or may not move into the officially supported code base over time. A module in this subproject doesn't have to obey the rule of staying binary compatible between minor releases. Breaking API changes may be introduced in minor releases without notice as we refine and simplify based on your feedback. A module may be dropped in any release without prior deprecation. The Typesafe subscription does not cover support for these modules.

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# Akka Contrib Reference Config File #
######################################

# This is the reference config file that contains all the default settings.
# Make your edits/overrides in your application.conf.

# //#pub-sub-ext-config
# Settings for the DistributedPubSubExtension
akka.contrib.cluster.pub-sub {
  # Actor name of the mediator actor, /user/distributedPubSubMediator
  name = distributedPubSubMediator

  # Start the mediator on members tagged with this role.
  # All members are used if undefined or empty.
  role = ""
  
  # The routing logic to use for 'Send'
  # Possible values: random, round-robin, consistent-hashing, broadcast
  routing-logic = random

  # How often the DistributedPubSubMediator should send out gossip information
  gossip-interval = 1s

  # Removed entries are pruned after this duration
  removed-time-to-live = 120s
  
  # Maximum number of elements to transfer in one message when synchronizing the registries.
  # Next chunk will be transferred in next round of gossip. 
  max-delta-elements = 3000
  
}
# //#pub-sub-ext-config

# Protobuf serializer for cluster DistributedPubSubMeditor messages
akka.actor {
  serializers {
    akka-pubsub = "akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer"
  }
  serialization-bindings {
    "akka.contrib.pattern.DistributedPubSubMessage" = akka-pubsub
  }
}


# //#receptionist-ext-config
# Settings for the ClusterReceptionistExtension
akka.contrib.cluster.receptionist {
  # Actor name of the ClusterReceptionist actor, /user/receptionist
  name = receptionist

  # Start the receptionist on members tagged with this role.
  # All members are used if undefined or empty.
  role = ""

  # The receptionist will send this number of contact points to the client
  number-of-contacts = 3

  # The actor that tunnel response messages to the client will be stopped
  # after this time of inactivity.
  response-tunnel-receive-timeout = 30s
}
# //#receptionist-ext-config

# //#cluster-client-mailbox-config
akka.contrib.cluster.client {
  mailbox {
    mailbox-type = "akka.dispatch.UnboundedDequeBasedMailbox"
    stash-capacity = 1000
  }
}
# //#cluster-client-mailbox-config


# //#sharding-ext-config
# Settings for the ClusterShardingExtension
akka.contrib.cluster.sharding {
  # The extension creates a top level actor with this name in top level user scope, 
  # e.g. '/user/sharding'
  guardian-name = sharding
  # Start the coordinator singleton manager on members tagged with this role.
  # All members are used if undefined or empty.
  # ShardRegion actor is started in proxy only mode on nodes that are not tagged
  # with this role. 
  role = ""
  # The ShardRegion retries registration and shard location requests to the 
  # ShardCoordinator with this interval if it does not reply.
  retry-interval = 2 s
  # Maximum number of messages that are buffered by a ShardRegion actor.
  buffer-size = 100000
  # Timeout of the shard rebalancing process.
  handoff-timeout = 60 s
  # Rebalance check is performed periodically with this interval.
  rebalance-interval = 10 s
  # How often the coordinator saves persistent snapshots, which are
  # used to reduce recovery times
  snapshot-interval = 3600 s
  # Setting for the default shard allocation strategy
  least-shard-allocation-strategy {
    # Threshold of how large the difference between most and least number of
    # allocated shards must be to begin the rebalancing.
    rebalance-threshold = 10
    # The number of ongoing rebalancing processes is limited to this number.
    max-simultaneous-rebalance = 3
  }
}
# //#sharding-ext-config