It very much depends on your application. You'll PROBABLY want to double write for some period of time - start writes to both Cassandra and Oracle, and then ensure they're both in sync. Once you're sure they're both in sync, move your reads from Oracle to Cassandra.
On Wed, Sep 5, 2018 at 8:58 PM sha p <shatestt...@gmail.com> wrote: > Hi all, > Sir how should I keep track of the data which is moved to Cassandra , what > are the best strategies available? > > Regards, > Shyam > > On Wed, 5 Sep 2018, 18:51 sha p, <shatestt...@gmail.com> wrote: > >> >> Hi all , >>> Me new to Cassandra , i was asked to migrate data from Oracle to >>> Cassandra. >>> Please help me giving your valuable guidance. >>> 1) Can it be done using open source Cassandra. >>> 2) Where should I start data model from? >>> 3) I should use java, what kind of jar/libs/tools I need use ? >>> 4) How I decide the size of cluster , please provide some sample >>> guidelines. >>> 5) this should be in production , so what kind of things i should take >>> care for better support or debugging tomorrow? >>> 6) Please provide some good books /links which can help me in this task. >>> >>> >>> Thanks in advance. >>> Highly appreciated your every amal help. >>> >>> Regards, >>> Shyam >>> >>
