Currently, the ZeroMQ implementation using a PUB / SUB model does not allow for guaranteed message delivery or durable subscriptions. Even using the ROUTER / BROKER mode only guaranteed message delivery as long as BOTH the proxy and the endpoint didn't go down.
Most likely will need to revisit ZeroMQ implementation choice and select another solution with built-in persistence (ActiveMQ, RabbitMQ, etc...)
Currently, the ZeroMQ implementation using a PUB / SUB model does not allow for guaranteed message delivery or durable subscriptions. Even using the ROUTER / BROKER mode only guaranteed message delivery as long as BOTH the proxy and the endpoint didn't go down.
Most likely will need to revisit ZeroMQ implementation choice and select another solution with built-in persistence (ActiveMQ, RabbitMQ, etc...)