On Tue, Sep 8, 2015 at 4:40 PM, Eric Plowe <eric.pl...@gmail.com> wrote:
> I'm using Cassandra as a storage mechanism for session state persistence > for an ASP.NET web application. I am seeing issues where the session > state is persisted on one page (setting a value: Session["key"] = > "value" and when it redirects to another (from a post back event) and check > for the existence of the value that was set, it doesn't exist. > > It's a 12 node cluster with 2 data centers (6 and 6) running 2.1.9. The > key space that the column family lives has a RF of 3 for each data > center. The session state provider is using the the datastax csharp driver > v2.1.6. Writes and reads are at LOCAL_QUORUM. > 1) Write to DC_A with LOCAL_QUORUM 2) Replication to DC_B takes longer than it takes to... 3) Read from DC_B with LOCAL_QUORUM, do not see the write from 1) If you want to be able to read your writes from DC_A in DC_B, you're going to need to use EACH_QUORUM. =Rob
