Distributed Systems, Cap, Google Spanner, Spanner, Memcached.
most distributed systems run by large shops, in Spanner, SLA-availability is achieved by robust private networks and SRE best practice. Serializability is achieved by two-phase commit(across shard) and Paxos(within shard). In a nutshell, Spanner is a sharded database. Each shard is replicated as a