From a35be2b6690ea83d8d34e2ab61852f8a3a94fe08 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 8 Mar 2026 22:55:42 -0700
Subject: [PATCH] fix: add GIN index on groups.members JSONB for membership
 lookups

Without this index, ListGroupsForUser and membership queries
require full table scans on the groups table.
---
 weed/credential/postgres/postgres_store.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/weed/credential/postgres/postgres_store.go b/weed/credential/postgres/postgres_store.go
index 4c9a9771c..3ba4810d6 100644
--- a/weed/credential/postgres/postgres_store.go
+++ b/weed/credential/postgres/postgres_store.go
@@ -184,6 +184,12 @@ func (store *PostgresStore) createTables() error {
 		return fmt.Errorf("failed to create groups disabled index: %w", err)
 	}
 
+	// Create GIN index on groups members JSONB for membership lookups
+	groupsMembersIndex := `CREATE INDEX IF NOT EXISTS idx_groups_members_gin ON groups USING GIN (members);`
+	if _, err := store.db.Exec(groupsMembersIndex); err != nil {
+		return fmt.Errorf("failed to create groups members index: %w", err)
+	}
+
 	return nil
 }