I have one application in which a Linux machine capturing and saving to RAM disk a lot of traffic (telemetry). This traffic is quite huge - about 700MB/s. I do it with TCPdump, which works just fine. It creates a sequentially numbered files, which have 2GB size and have a Wireshark PCAP format. Older files are either archived or overwritten.
I would like to make a kind of lightweight monitoring app, which would just open the latest captured file, browse through few first captured frames, extract the data from them and show it on the dashboard. This has to be done periodically, let's say every couple of seconds.
Off-course NodeRED might be not the best tool for it, but due to next ideas I would like to start with it - thus the question - is it possible to do with NodeRED? Can it open large files quickly, without reading them fully?