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 package com.codahale.metrics;

A statistically representative reservoir of a data stream.
 
 public interface Reservoir {
    
Returns the number of values recorded.

Returns:
the number of values recorded
    int size();

    
Adds a new recorded value to the reservoir.

Parameters:
value a new recorded value
    void update(long value);

    
Returns a snapshot of the reservoir's values.

Returns:
a snapshot of the reservoir's values
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