I need to write a simple application that reads rows from the table of the
postgres, indexes them in elasticsearch and if successful records in
postgres that data has been indexed. Rows have sizes of about 1 Kbyte to
100MB. I'm trying to solve this with the akka-stream:
FlowFrom(messagePublisher)
.mapFuture(elasticService.indexMessage)
.withSink(messagesSink)
.run
Question: What is the best way to do a flow restriction for rows to
retrieve from the database so that the summary size of the in-process rows
does not exceed a certain value?
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