Wireshark is a well known utility that offers snooping on all kinds of network protocols. You can use it to dissect Scylla’s internal protocol, including reading and writing rows, exchanging schema information, gossiping and repairs.
It’s a sure revolution, one that most people haven’t noticed yet. That’s because of two new, exciting interfaces: eBPF (or BPF for short) and io_uring, the latter added to Linux in 2019 and still in very active development. Those interfaces may look evolutionary, but they are revolutionary in the sense that they will — we bet — completely change the way applications work with and think about the Linux Kernel.