[vaxman]

LiteFS, a tool for edge-case data loss, unintended service hangs and data corruption /s

this kind of scheme was explored and naturally selected away in the pre-Internet networking era (whose applied knowledge was mostly lost and unavailable to newer generations after the boomer purge that began in the 2000 market crash) .. this kind of scheme should always be isolated to tightly coupled machines operating over fault tolerant and RELATIVELY high-speed links (like a cluster of boards interconnected via PCIe, fibre or Thunderbolt, each with [controller] ECC memory) not between WAN zones.

But in a tightly-coupled cluster-type environment, better solutions would exist like Redis Cluster (and RediSQL) that could be further upgraded with some kind of shared pagefile.

But for testing near-obsolete non-serverless cloud code against edge-cases, consider building a testbed of 4 or 5 rPis talking to each other over (really) slow LoRA links ..then amp up the RFi, thermal and vibration procedures and add all the code to maintain the data integrity as you monitor for the various failure scenarios.