Easy postponed / scheduled messages through Google Pub/Sub

It is very common when we need to deliver or execute some job at some specific time with high accuracy and in reliable and scalable way. Some message brokers like RabbitMQ provide some workaround using message TTL and dead-letter topics. But what if you or your company prefer google managed solutions like Google Pub/Sub. Google Pub/Sub doesn’t provide such feature at this moment.

We can think about workarounds with some daemon and external DB but they barely can be effective on huge numbers of messages. As alternative there is a…