They don’t have to. If you don’t have database replicas that are actively trying to subvert the system, inject bogus transactions, etc. then you don’t have the set of failure domains for which blockchains are in theory useful for.
If you’re running backups for a single organization, you just need replicated data storage on servers owned and operated by that organization. If you’re running backups for a set of users who all trust your organization (e.g. if you’re Dropbox or the like), you also don’t need blockchain.
I am not talking about back ups but more of dealing with the problems of distributed data in general. I.E. How do you, across a network of intermittent reliability (at a certain scale this is a guarantee not a choice), in sure that a piece of data written to and read by multiple actors is constant and available across the system?
I haven’t seen a replicated database that operates over the same scale of failure domains as distrubuted ledgers, do you have good examples of that?
They don’t have to. If you don’t have database replicas that are actively trying to subvert the system, inject bogus transactions, etc. then you don’t have the set of failure domains for which blockchains are in theory useful for.
If you’re running backups for a single organization, you just need replicated data storage on servers owned and operated by that organization. If you’re running backups for a set of users who all trust your organization (e.g. if you’re Dropbox or the like), you also don’t need blockchain.
I am not talking about back ups but more of dealing with the problems of distributed data in general. I.E. How do you, across a network of intermittent reliability (at a certain scale this is a guarantee not a choice), in sure that a piece of data written to and read by multiple actors is constant and available across the system?
Spanner.
Cloud only and closed source, right?
I’m pointing at the architecture, not the specific implementation. Build something like Spanner, not something like a blockchain.