trait BatchAggregator[A, B] extends AnyRef

This batch aggregator exposes a BatchAggregator.run method that allows for batching scala.concurrent.Future computations, defined by a BatchAggregator.Processor.

Note: it is required that getter and batchGetter do not throw an exception. If they do, the number of in-flight requests could fail to be decremented which would result in degraded performance or even prevent calls to the getters.

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Abstract Value Members

  1. abstract def run(item: A)(implicit ec: ExecutionContext, traceContext: TraceContext, callerCloseContext: CloseContext): Future[B]

    Runs the processor of this aggregator for the given item, possibly batching several items.

    Runs the processor of this aggregator for the given item, possibly batching several items.

    This method can be used as the mappingFunction of a Scaffeine async cache.

    returns

    The scala.concurrent.Future completes with the processor's response to this item, after the batch of items has finished. If the processor fails with an exception for some item in a batch, the exception may propagate to the scala.concurrent.Futures of all items in the batch.

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