[Feature]: incremental backup

[jiaoew1991]

Is your feature request related to a problem? Please describe.

We need a feature for incremental backup, especially in scenarios where the vector data is too large and the full backup time is too long. Incremental backup is a useful feature.

Describe the solution you'd like.

No response

Describe an alternate solution.

No response

Anything else? (Additional Context)

No response

[SimFG]

here, https://github.com/zilliztech/milvus-cdc

[jiaoew1991]

here, https://github.com/zilliztech/milvus-cdc

I know CDC can do incremental backups, but what are the best practices? 😏