solr: sync data from one solr cloud to another solr cloud

[mca corner <mc...@outlook.com>]

We are using solr 8.9.0 with solr cloud mode with two shards and each shard has one replica(means 2 shards and 2 replicas) of type NRT.

We need to insert and update index frequently also require near real time data.

We have mainly two usages of searching data from solr:

  1.  Index searching and retrieval of solr document for an application which requires real-time updated data
  2.  Index searching and retrieval of solr document for API and Reporting(It works if we will get updated data late by 1-2 minutes)

So, we are planning to make replica of solr cloud for usage no:2(document for API and Reporting)

We came to know that the Cross Data Center Replication (CDCR) option is available in 8.9.0 but its deprecated and removed in 9.0. link: https://solr.apache.org/guide/8_9/cross-data-center-replication-cdcr.html

How can we sync data from one solr cloud to another solr cloud? for example: If one solr cloud updates documents then it should be also updated in other cloud.

Is there any configuration or component to look into for our use case?

Thanks in advance...