n, or combined values,
calculated based on applying an aggregate function to a set of
transactions.</p>
</li>
<li>
<p>Instead of using timestamps in milliseconds as <code>MapState</code> keys, round
them to the level of &ldquo;resolution&rdquo; that you are willing to accept
(for instance, a full minute). Each entry therefore represents a
bucket.</p>
</li>
<li>
<p>Whenever a window is evaluated, append the new transaction&rsquo;s data to
the bucket aggregate instead of storing individual data points per
tra