Let's say I have a component c:Widget which is being displayed in some user's browser. c:Widget displays the contents a Widget__c record.
Let's say something causes the Widget__c record to update on the server.
Is it possible for the server to send a message to c:Widget, which I might be able to handle as an event?
In the less favourable alternative, is it possible to create a background process in c:Widget which will periodically poll the Widget__c record for updates?