Remote memory does not count as shared because of the atomicity problems. The same reason _local_ memory doesn't count as shared the minute you spin up two wri

Remote memory does not count as shared because of the atomicity problems. The same reason _local_ memory doesn't count as shared the minute you spin up two writer threads with access to the same mutable memory space. (And why Rust is popular for distributed problems that share the same clock) If you replaced Memcache with a single Redis instance where all operations were managed by Lua scripts (e. g. you introduced atomicity to your operations) you wouldn't have a distributed system, just one with slow, sometimes rather faulty memory.