Elasticsearch store compression

Elastic Stack Elasticsearch
1

Hi, I have a specific use case for elasticsearch, trying to find if compression techniques in elasticsearch can be customized to exploit high compression.
We use elasticsearch to provide search in text document contents and support versioning too.
We index text documents with slight difference to different elasticsearch documents.
How to achieve maximum compression for this case?

Ex: 1MB text document indexed everyday with one line changes.
What compression level we could expect ?

2

It should be easy to test it with some significant volume and guess from that.

Because as usual it depends..

3

Using index.codec”: “best_compression” should be enough ?
Or is there any other options available ?

4

Yes for source storage or field storage if you applied any specific field settings.
You can also disable _source field, use different analyzers... so it really depends.