Object

com.twitter.finagle.kestrel

MultiReader

Related Doc: package kestrel

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object MultiReader

Read from multiple clients in round-robin fashion, "grabby hands" style. The load balancing is simple, and falls out naturally from the user of the {{Offer}} mechanism: When there are multiple available messages, round-robin across them. Otherwise, wait for the first message to arrive.

Var[Addr] example:

val name: com.twitter.finagle.Name = Resolver.eval(...)
val va: Var[Addr] = name.bind()
val readHandle =
  MultiReader(va, "the-queue")
    .clientBuilder(
      ClientBuilder()      /* etc... but do not set hosts or build */
        .stack(Kestrel.client
          .withSession.acquisitionTimeout(1.minute)
          .withRequestTimeout(1.minute)
          .withSessionPool.maxSize(1)))
    .retryBackoffs(/* Stream[Duration], Timer; optional */)
    .build()
Annotations
@deprecated
Deprecated

(Since version 6.15.1) Use MultiReaderMemcache or MultiReaderThriftMux instead

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Deprecated Value Members

  1. def apply(handles: Seq[ReadHandle]): ReadHandle

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    @deprecated
    Deprecated

    (Since version 6.8.2) Use Var[Addr]-based apply method

  2. def apply(handles: Iterator[ReadHandle]): ReadHandle

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    A java friendly interface: we use scala's implicit conversions to feed in a {{java.util.Iterator<ReadHandle>}}

    A java friendly interface: we use scala's implicit conversions to feed in a {{java.util.Iterator<ReadHandle>}}

    Annotations
    @deprecated
    Deprecated

    (Since version 6.8.2) Use Var[Addr]-based apply method

  3. def apply(clients: Seq[Client], queueName: String): ReadHandle

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    @deprecated
    Deprecated

    (Since version 6.8.2) Use Var[Addr]-based apply method

  4. def apply(cluster: Cluster[SocketAddress], queueName: String): ClusterMultiReaderBuilder

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    @deprecated
    Deprecated

    (Since version 6.8.2) Use Var[Addr]-based apply method

  5. def apply(va: Var[Addr], queueName: String): ClusterMultiReaderBuilder

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    Create a Kestrel memcache protocol based builder

    Create a Kestrel memcache protocol based builder

    Annotations
    @deprecated
    Deprecated

    (Since version 6.15.1) Use MultiReaderMemcache.apply instead

  6. def merge(readHandleCluster: Cluster[ReadHandle]): ReadHandle

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    @deprecated
    Deprecated

    (Since version 6.8.2) Use Var[Addr]-based apply method

  7. def newBuilder(cluster: Cluster[SocketAddress], queueName: String): ClusterMultiReaderBuilder

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    @deprecated
    Deprecated

    (Since version 6.8.2) Use Var[Addr]-based apply method

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