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https://issues.apache.org/jira/browse/COUCHDB-1382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13188425#comment-13188425
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Alexey Loshkarev commented on COUCHDB-1382:
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Also, with my data sample, minor_version=1 reduces database size to ~12%
(~800MB vs ~900MB)
> Use term_to_binary with minor_version=1 to reduce disk size of data and
> indexes
> -------------------------------------------------------------------------------
>
> Key: COUCHDB-1382
> URL: https://issues.apache.org/jira/browse/COUCHDB-1382
> Project: CouchDB
> Issue Type: Improvement
> Components: Database Core
> Affects Versions: 1.1.1
> Environment: doesn't matter
> Reporter: Alexey Loshkarev
> Priority: Trivial
>
> Now, couchdb store data using term_to_binary/1 (with no options).
> According manual, term_to_binary/2 has option minor_version, which value 1
> changes storage format for floats.
> Default behaviour, float consume 33 bytes of disk space.
> With minor_version=1, float consume only 9 bytes of disk space.
> minor_version=1 is supported since Erlance 11B-4, but minimum couchdb
> supported erlang version is still 13, so no problem to implement this.
> Also, term_to_binary/2 has "compressed" option, it may also reduce disk
> space, but will use more cpu for that.
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