If I use the master -> read-only couchbase method with XDCR, would the sync gateway connected to the read-only couchbase instances need to restarted to pick up the changes?
On Tuesday, March 24, 2015 at 11:18:04 AM UTC-7, Traun Leyden wrote: > > The only safe way to use XDCR is if you have a single master Couchbase > Cluster + Sync Gateway that accepts writes, and all of your other CBCluster > + Sgw are read-only. (Sync Gateway doesn't currently have a read-only mode > to my knowledge, not sure about Couchbase Server). Otherwise, since XDCR > is not aware of the _sync metadata field in the documents, it will > essentially corrupt documents. > > Having said that, we've done zero testing of XDCR + Sync Gateway in-house > so far, so you'd be in unchartered territory. > > Another option is to try sg-replicate > <https://github.com/couchbaselabs/sg-replicate>, which uses the ReST > replication protocol to sync between Sync Gateways in an eventually > consistent fashion. You would be able to have all your Couchbase Clusters > + Sync Gateways accept writes, but: > > * They would be eventually consistent -- there will be a delay when docs > make it from one cluster to the other. > > * You might end up with document conflicts. Sync Gateway is architected > to handle these gracefully, so they won't cause any issues, but there will > be more work on your part to handle these conflicts in your application. > > sg-replicate is still fairly alpha / POC, but has undergone some real > world dogfood testing and seemed to work fine. Since most of the work is > handled on the Sync Gateway side, it's a fairly simple tool that just > shuttles documents back and forth. > > > > > On Tue, Mar 24, 2015 at 10:24 AM, Brett Harrison <[email protected] > <javascript:>> wrote: > >> Can I use XDCR to update couchbase (that uses the sync gateway) to be >> identical in several datacenters? >> >> Our database is read-only to the user. The only updates that happen will >> be on the admin port. With XDCR turned on would the data propagate >> properly to the other data centers and be presented by the sync gateway in >> that location? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Couchbase Mobile" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/mobile-couchbase/9df5640d-4c5e-4d30-b959-8751ccd215ea%40googlegroups.com >> >> <https://groups.google.com/d/msgid/mobile-couchbase/9df5640d-4c5e-4d30-b959-8751ccd215ea%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Couchbase Mobile" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/mobile-couchbase/5fc829a9-1056-4981-88dc-85eaf264a746%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
