New global config: cache_selected_only

[jtcohen6]

Contributions

• I have read the contribution docs, and understand what's expected of me.

Link to the page on docs.getdbt.com requiring updates

• https://docs.getdbt.com/reference/global-configs

What part(s) of the page would you like to see updated?

• Add new "global" config, cache_selected_only, based on the addition in cache schema for selected models dbt-core#4860
• Call out that this is "experimental" functionality, which may significantly reduce runtime overhead in large warehouses but may also have some unanticipated / unaccounted-for rough edges. We could use a callout similar to the one we use on https://docs.getdbt.com/docs/building-a-dbt-project/metrics

Additional information

The PR is not yet merged, but likely to be included in v1.1.0rc1

[runleonarun]

Leona note: removed from PR. Need new PR

Cache for selected models only

Supply the --cache_selected_only flag to dbt run to make dbt Cache schema for selected models only instead of caching all schemas in a project. You can set selected_schema_cache: true in profile.yml as general config for a project but can override that with --cache_selected_only for specific scenario.

For example, you can

[jtcohen6]

Resolved by #1327