v1.11: Facet distribution and stats for federated search

[guimachiavelli]

v1.10 introduced federated search, a multi-search variant which returns all search results across all queried indexes in a single list. v1.11 allows users to request Meilisearch to include facet data in multi-search query responses. This data can be either separated by index, or merged in a single list.

To obtain facet data by index, users must set the facetsByIndex field of the federation parameter.

To obtain merged total facet data values for all queried indexes, users must set both facetsByIndex and mergeFacets in federation.

Tasks

• Update reference/api/multi-search

References

• Engine issue: Support facet distribution for federated search meilisearch#4932
• PRD: https://meilisearch.notion.site/v1-11-Federated-search-59b30e03383c40729d7541a3dffb0069
• SME: @dureuill