123 lines
4.8 KiB
Text
123 lines
4.8 KiB
Text
###############################################
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# Akka Cluster Sharding Reference Config File #
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###############################################
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# This is the reference config file that contains all the default settings.
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# Make your edits/overrides in your application.conf.
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# //#sharding-ext-config
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# Settings for the ClusterShardingExtension
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akka.cluster.sharding {
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# The extension creates a top level actor with this name in top level system scope,
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# e.g. '/system/sharding'
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guardian-name = sharding
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# Specifies that entities runs on cluster nodes with a specific role.
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# If the role is not specified (or empty) all nodes in the cluster are used.
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role = ""
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# When this is set to 'on' the active entity actors will automatically be restarted
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# upon Shard restart. i.e. if the Shard is started on a different ShardRegion
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# due to rebalance or crash.
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remember-entities = off
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# If the coordinator can't store state changes it will be stopped
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# and started again after this duration, with an exponential back-off
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# of up to 5 times this duration.
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coordinator-failure-backoff = 5 s
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# The ShardRegion retries registration and shard location requests to the
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# ShardCoordinator with this interval if it does not reply.
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retry-interval = 2 s
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# Maximum number of messages that are buffered by a ShardRegion actor.
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buffer-size = 100000
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# Timeout of the shard rebalancing process.
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handoff-timeout = 60 s
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# Time given to a region to acknowledge it's hosting a shard.
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shard-start-timeout = 10 s
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# If the shard is remembering entities and can't store state changes
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# will be stopped and then started again after this duration. Any messages
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# sent to an affected entity may be lost in this process.
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shard-failure-backoff = 10 s
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# If the shard is remembering entities and an entity stops itself without
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# using passivate. The entity will be restarted after this duration or when
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# the next message for it is received, which ever occurs first.
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entity-restart-backoff = 10 s
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# Rebalance check is performed periodically with this interval.
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rebalance-interval = 10 s
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# Absolute path to the journal plugin configuration entity that is to be
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# used for the internal persistence of ClusterSharding. If not defined
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# the default journal plugin is used. Note that this is not related to
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# persistence used by the entity actors.
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journal-plugin-id = ""
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# Absolute path to the snapshot plugin configuration entity that is to be
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# used for the internal persistence of ClusterSharding. If not defined
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# the default snapshot plugin is used. Note that this is not related to
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# persistence used by the entity actors.
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snapshot-plugin-id = ""
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# Parameter which determines how the coordinator will be store a state
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# valid values either "persistence" or "ddata"
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# The "ddata" mode is experimental, since it depends on the experimental
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# module akka-distributed-data-experimental.
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state-store-mode = "persistence"
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# The shard saves persistent snapshots after this number of persistent
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# events. Snapshots are used to reduce recovery times.
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snapshot-after = 1000
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# Setting for the default shard allocation strategy
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least-shard-allocation-strategy {
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# Threshold of how large the difference between most and least number of
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# allocated shards must be to begin the rebalancing.
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rebalance-threshold = 10
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# The number of ongoing rebalancing processes is limited to this number.
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max-simultaneous-rebalance = 3
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}
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# Timeout of waiting the initial distributed state (an initial state will be queried again if the timeout happened)
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# works only for state-store-mode = "ddata"
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waiting-for-state-timeout = 5 s
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# Timeout of waiting for update the distributed state (update will be retried if the timeout happened)
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# works only for state-store-mode = "ddata"
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updating-state-timeout = 5 s
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# Settings for the coordinator singleton. Same layout as akka.cluster.singleton.
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# The "role" of the singleton configuration is not used. The singleton role will
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# be the same as "akka.cluster.sharding.role".
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coordinator-singleton = ${akka.cluster.singleton}
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# The id of the dispatcher to use for ClusterSharding actors.
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# If not specified default dispatcher is used.
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# If specified you need to define the settings of the actual dispatcher.
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# This dispatcher for the entity actors is defined by the user provided
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# Props, i.e. this dispatcher is not used for the entity actors.
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use-dispatcher = ""
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}
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# //#sharding-ext-config
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# Protobuf serializer for Cluster Sharding messages
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akka.actor {
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serializers {
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akka-sharding = "akka.cluster.sharding.protobuf.ClusterShardingMessageSerializer"
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}
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serialization-bindings {
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"akka.cluster.sharding.ClusterShardingSerializable" = akka-sharding
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}
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serialization-identifiers {
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"akka.cluster.sharding.protobuf.ClusterShardingMessageSerializer" = 13
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}
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}
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