v1.51.0 👽

✨ Enhancement

• Add filter condition to DSRs by @dureuill in #6505

  New filter rule activation condition

  Dynamic search rules (DSR) can now declare a new filter condition: it contains a single values key, whose value is a JSON object.
  The keys of this values JSON object are the facet names (e.g., color, genres, ...), while their values are the values that a filter must resolve to for these facets, so that the rule is active.

  Example of sending a DSR with a filter condition

   // PATCH /dynamic-search-rules/test-filter
   
   {
     "conditions": {
       "filter": {
         "values": {
           "color": "red",
           "category": "shirt"
         }
       }
     },
     "actions": [
       {
         "selector": { "id": "red shirt on sales" },
         "action": { "type": "pin", "position": 0 }
       }
     ]
   }

  Example of search query that enables the DSR above

   {
     "filter": "(category = shirt AND color = red) OR (category = jeans AND color = blue)"
   }

  Note that the filter only needs to have one branch resolving to all the facet values declared in the rule for the rule to be active.

  New lastUpdatedAt field

  Dynamic search rules returned by GET /dynamic-search-rules/{:ruleUid} and POST /dynamic-search-rules contain an additional lastUpdatedAt field.

  This field is automatically updated with the enqueuedAt value of the last task that modified the rule.

  Rules are listed with the most recently updated first

  POST /dynamic-search-rules now lists rules in descending lastUpdatedAt order, meaning that the most recently updated rules will be listed first.

  New environment variables

  New environment variables are defined to control the behavior of the DSR fuel:

  • MEILI_EXPERIMENTAL_DSR_FUEL_FILTER_FUEL (in range 0..4294967296): controls how many filter constraint combinations Meilisearch will attempt to resolve at search time before giving up and applying partial rules.
  • MEILI_EXPERIMENTAL_DSR_FUEL_FILTER_OR_FUEL (in range 0..65536): controls how many filter disjunctions Meilisearch will build when turning a filter to its canonical shape
  • MEILI_EXPERIMENTAL_DSR_FUEL_FILTER_AND_FUEL (in range 0..65536): controls how many filter conjunctions Meilisearch will build in total when turning a filter to its canonical shape
  • MEILI_EXPERIMENTAL_DSR_FUEL_FILTER_DEPTH_FUEL (in range 0..256): controls the maximum recursive depth that Meilisearch allows when turning a filter to its canonical shape

• Speed up search requests by @Kerollmops in #6528
  Improves Meilisearch search speed by avoiding unnecessary internal work. We drastically reduced the number of times we retrieve data from disk to a single time across the whole search pipeline. This improvement will have the greatest effect on datasets with a large number of distinct fields across documents. We have seen search speeds up to 5.4x on a dataset with more than 14k different fields.

• Stabilize dumpless upgrade by @curquiza in #6486

  ⚠️ Breaking change following the stabilization of an experimental feature ⚠️

  The flag —-experimental-dumpless-upgrade is renamed —-upgrade-db, keeping the exact same behavior.

• Remove unused experimental features by @curquiza in #6489

  ⚠️ Breaking change: removing the following experimental features ⚠️

  • Replication parameters: removing --experimental-replication-parameters because outdated. We now have another way to handle replication.
  • Import dumps with old document indexer fallback: removing --experimental-no-edition-2024-for-dumps. This flag existed to prevent bugs related to our new indexer, which is now stable.
  • No snapshot compression: removing --experimental-no-snapshot-compaction because it's not useful anymore.

🪲 Bug fixes

• Make sure legacy attribute patterns work by @Kerollmops in #6531
  • Missing support for the shorthand filterable attributes syntax

🔩 Miscellaneous

• Add missing logs in multisearch by @ManyTheFish in #6529
• Docs: Fix stale pre-v1.0 supported versions statement by @vishnujayvel in #6524
• Bump sigstore/cosign-installer from 4.1.1 to 4.1.2 by @dependabot[bot] in #6427
• Bump actions/github-script from 7 to 9 by @dependabot[bot] in #6425
• Bump actions/upload-artifact from 4 to 7 by @dependabot[bot] in #6428

New Contributors

• @vishnujayvel made their first contribution in #6524