Echosec users who have Twitter access might notice both “Twitter” and “Twitter Firehose” in their data provider list. Both deliver the same content to your feed—the difference is in how they each poll data.
When you create a search, think of the Twitter data that streams in like water from a tap. Twitter Firehose is like a tap running a constant stream, and content based on your parameters streams in near real-time. Twitter is like a dripping tap—Echosec returns Twitter data based on your search parameters at regular time intervals. If you have both Twitter and Twitter Firehose selected as providers, Echosec defaults to streaming data with Twitter Firehose.
These providers also have differences for Quick Search post volume limitations: Echosec returns a maximum of 500 results per request with Twitter Firehose, and 100 results per request with Twitter. Check out this article for more information about Echosec data provider limitations.