Can I use TypeORM for cassandra db? Or is there any similar typescript library for cassandra? I have found some modules like cassandra-driver but it doesn't have feature like TypeORM #entities. Can I use both of these modules together?
unfortunately No, that Cassandra section has not been completed yet.
but you can use: https://github.com/ifaim/nestjs-express-cassandra
for more learning about Cassandra in Nestjs: https://express-cassandra.readthedocs.io/en/stable/datatypes/
I use this repo for our enterprise project.
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trying to migrate the data from oracle to cassandra i have below issues:
How to handle the errors while data migration to cassandra using spark-sql?
How to design the retry machanisum if anything fails ?
Is there any document/sample/github regarding the same.
~Sha
you can look into these below github repos for reference
https://github.com/snazy/Oracle_to_Cassandra
https://github.com/AlexGruPerm/oratocass
I have created an application from jhipster which is microservice based. I have gateway registry and application which is running on MySql database. Now I want to migrate from MySQL to Cassandra database. Can you please let me know the changes I need to make in java/class files and list of file. So far I made some changes like application-dev yml. I have this application on hibernate, ehcache etc. Changed the class name in cacheconfiguration.java. Please let me know anyother changes required to run on database.
Regards
Satyanvesh
You can use the same Java POJO classes to annotate with Spring-Cassandra or datastax Cassandra annotations. If you want to migrate your data as well export your data tables as csv from MySQL and use the COPY command in cql to copy from csv to Cassandra.
I'm trying to use Cassandra for mod_mam in Ejabberd 16.09. Does that version of Ejabberd support Cassandra? If it does, how to configure Ejabberd to use Cassandra?
Also, I found some Erlang-Cassandra driver such as Cqerl, Erlcass, and Erlang-cassandra-cql. Can I use them to connect Ejabberd and Cassandra?
ejabberd doesn't support Cassandra as a database backend. The only available backends at the moment are: internal (i.e. Mnesia), Riak, MySQL, PostgreSQL, MS SQL, sqlite and other ODBC compatible databases.
Of course you can use mentioned Erlang drivers, but this will not be very easy to write a new database backend using them: some experience in Erlang and ejabberd is required.
I'm on the look out for a node ORM that works well with both Oracle and PostgreSQL.
I see that Waterline and Sequelize do not have built in support for Oracle.
Sequelize-Oracle is available though.
Is there a single node ORM module that supports both Oracle and PostgreSQL ?
Please suggest.
You should use knaxjs to generate query for both Oracle and PostgreSQL. Another way is use cu8-sequelize-oracle for Oracle and sequelizejs for PostgreSQL. Thanks!
I would like to try Cassandra, but don't know how to integrate Cassandra with Node.js. When I say Node.js it is MEAN.JS or any other framework. Just let me know if there is a way?
you can follow these links datastax and github datastax node.js driver
If you are new to cassandra then you can study cassandra on datastax for free also.
You can use this cassandra-client npm also.