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{{Short description|Data transmission rate management}}
{{Distinguish|Control flow}}
{{Use dmy dates|date=
In [[data communications]], '''flow control''' is the process of managing the rate of data transmission between two nodes to prevent a fast sender from overwhelming a slow receiver. Flow control should be distinguished from [[congestion control]], which is used for controlling the flow of data when congestion has actually occurred.<ref name=ATM-Traffic-Management /> Flow control mechanisms can be classified by whether or not the receiving node sends feedback to the sending node.
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