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The nodejs async module: https://github.com/caolan/async provides 2 similar methods, async.waterfall and async.series.
What is the difference between them?
It appears that
async.waterfallallows each function to pass its results on to the next function, whileasync.seriespasses all results to the final callback. At a higher level,async.waterfallwould be for a data pipeline (“given 2, multiply it by 3, add 2, and divide by 17”), whileasync.serieswould be for discrete tasks that must be performed in order, but are otherwise separate.