Queuing Data to send Once Reconnected to Internet

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This might be a question for other forums but I am going to ask here because I'm not sure where to start...

We are pulling in a bunch of data from a PLC through an OPC database. From there we are sending it to a Ubidots device over the internet but also a local InfluxDB database on an external USB.

One thing we are not yet doing is queuing data to be sent to Ubidots if we disconnect from the internet, and then sending it all when we reconnect. I realize this might be an issue for Ubidots or InfluxDB, but any thoughts would be helpful.

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Have a look at this flow which is designed to solve exactly that sort of guaranteed delivery problem. Guaranteed delivery of data (upload, email etc) across a network (flow) - Node-RED

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