trait PubSubCommands extends AnyRef
This trait implements pub/sub commands.
- Self Type
- PubSubCommands with NonBlockingConnection
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- PubSubCommands
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def
pubSubChannels(patternOpt: Option[String] = None): Future[List[String]]
Lists the currently active channels.
Lists the currently active channels. An active channel is a Pub/Sub channel with one or more subscribers (not including clients subscribed to patterns).
- patternOpt
optional pattern to filter returned channels
- returns
the currently active channels, optionally matching the specified pattern
- Since
2.8.0
- Note
If no pattern is specified, all the channels are listed, otherwise if pattern is specified only channels matching the specified glob-style pattern are listed.
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def
pubSubNumPat(): Future[Long]
Returns the number of subscriptions to patterns (that are performed using the PSUBSCRIBE command).
Returns the number of subscriptions to patterns (that are performed using the PSUBSCRIBE command).
- returns
the number of subscriptions to patterns
- Since
2.8.0
- Note
Note that this is not just the count of clients subscribed to patterns but the total number of patterns all the clients are subscribed to.
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def
pubSubNumSub(channels: String*): Future[Map[String, Int]]
Returns the number of subscribers (not counting clients subscribed to patterns) for the specified channels.
Returns the number of subscribers (not counting clients subscribed to patterns) for the specified channels.
- channels
channel name(s)
- returns
a map of channels to number of subscribers for every provided channel
- Since
2.8.0
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def
publish[W](channel: String, message: W)(implicit arg0: Writer[W]): Future[Long]
Publishes a message to a channel.
Publishes a message to a channel.
- channel
the name of the channel
- message
the message payload
- returns
the number of clients that received the message
- Since
2.0.0
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