Cool pattern. Critics will say “falsehoods programmers believe about time” but it’s a cloud service, any time oddity that would break this would also break a lot more important stuff, so it’s fine.<p>Ugly code though.<p><pre><code> // env
QUEUES = [EVEN_QUEUE, ODD_QUEUE]
// producers
env.QUEUES[hour % 2].send …
// consumer
env.QUEUES[1 + hour % 2]</code></pre>