Well, if it ain&#x27;t broke, as they say...<p>here&#x27;s a page on the differences between Nchan and the Push Module: <a href="https:&#x2F;&#x2F;nchan.slact.net&#x2F;upgrade" rel="nofollow">https:&#x2F;&#x2F;nchan.slact.net&#x2F;upgrade</a> . One important thing I forgot to add is that the Push Module suffered from memory fragmentation under high load, and with a fixed-size shared-memory chunk that could mean running out of usable shared memory for a long-running nginx process. If you&#x27;re not experiencing that, and you don&#x27;t need to scale up, or the new features don&#x27;t appeal to you, don&#x27;t upgrade -- certainly not yet.<p>Maybe in a month or two when nchan makes its way into the nginx-extras debian package (replacing the push module), then consider upgrading.