scriptions.html">concepts</a> section.</p>
<p><strong><em>Note: message callbacks are invoked serially, one message at a time. If your application does not care about processing ordering and would prefer the messages to be dispatched concurrently, it is the application&apos;s responsibility to move them to some internal queue to be picked up by threads/go routines.</em></strong></p>
<p>Subscriptions set their starting position on creation using position or time. For example, in Go you can start at:</p>
<ul>