What you're dealing with is very similar to etags. The Google Cloud API design patterns suggests <https://cloud.google.com/apis/design/design_patterns#etags> "an API should include a string field etag in the resource definition." Looking at a few <https://github.com/googleapis/googleapis/blob/3c5166c1db0f1804af7acdbbd79137630a00ce63/google/monitoring/dashboard/v1/dashboard.proto#L43> examples <https://github.com/googleapis/googleapis/blob/f69562be0608904932bdcfbc5ad8b9a22d9dceb8/google/iam/v1/policy.proto#L110>, you can see the pattern: User would have a rowversion field that would be set when returned by the service. When being passed to the service to be modified, the field would be set to the *old* version.
That approach is probably pretty natural in the code, as the client could do a get(), modify the proto in-place, and then a set(). It wouldn't even have to copy the rowversion explicitly. On Tue, Jun 16, 2020 at 3:06 AM Smellblaster <smellblas...@gmail.com> wrote: > Hello! > > Usually I solve concurrency with EF6 so I add Timestamp (rowversion) > column to all my tables. > When I try to update value in database I just need to check if value in > this column is still the same. > > Now I want to move CRUD operations to gRPC service. > > I have 2 methods > - User GetUser(int id); > - UpdateUser(id, User u) > > User is my model and is *not directly *mapped to Entity (so there is no > rowversion field in my model). > Well. First idea that comes to my mind is to add this rowversion field to > model also. > > Is this correct approach or is there a better way. > > Thanks > > -- > You received this message because you are subscribed to the Google Groups " > grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to grpc-io+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/grpc-io/db8d097e-fa8c-42e8-9b6c-5ad0f114e817o%40googlegroups.com > <https://groups.google.com/d/msgid/grpc-io/db8d097e-fa8c-42e8-9b6c-5ad0f114e817o%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/CA%2B4M1oN-jd7%3DV%2BZzNKzk6GJGZ2F6bGtdny95GgE8E2kJqy%2BqDg%40mail.gmail.com.
smime.p7s
Description: S/MIME Cryptographic Signature
