Hi, 2017-07-26 17:33 GMT+02:00 Matt Ryan <[email protected]>: > >> If you could configure priority for read in the following order: {FBS, >> S3DS} but for writes in inverse order {S3DS, FBS} then this will >> almost satisfy any DataStore migration scenarios (except the need to >> transfer content stored in initial blob store) but it can be done in >> the background and it can be done by any other mechanism (offline copy >> process). > > I think that could be satisfied by reconfiguring the FBS as a read-only > store; from that point forward reads could still be satisfied from the FBS > but writes would all end up going to S3DS instead. Once all the blobs were > transferred in the background, the FBS could be shut down. Do you think > that would work?
Right, I forgot about read-only blob stores. Indeed writes should be performed without any overhead as the check is constant and global so no additional lookup needed, exactly like with priorities. Thanks for suggestion! Arek
