Optimized api/latest/fleet/software/titles endpoint

changes/35799-software-titles

@@ -0,0 +1 @@
+* Optimized api/latest/fleet/software/titles endpoint.

server/datastore/mysql/migrations/tables/20260226182000_OptimizeSoftwareTitlesHostCountsIndex.go

@@ -0,0 +1,39 @@
+package tables
+
+import (
+	"database/sql"
+	"fmt"
+)
+
+func init() {
+	MigrationClient.AddMigration(Up_20260226182000, Down_20260226182000)
+}
+
+func Up_20260226182000(tx *sql.Tx) error {
+	// Drop the old index that doesn't include global_stats or DESC on hosts_count
+	_, err := tx.Exec(`
+		DROP INDEX idx_software_titles_host_counts_team_counts_title
+		ON software_titles_host_counts
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to drop old index: %w", err)
+	}
+
+	// Create new covering index that includes global_stats.
+	// The optimized title query filters by (team_id, global_stats) then joins
+	// software_titles for the name-based secondary sort, so the index is used
+	// for filtering, not ordering.
+	_, err = tx.Exec(`
+		CREATE INDEX idx_software_titles_host_counts_team_global_hosts
+		ON software_titles_host_counts (team_id, global_stats, hosts_count, software_title_id)
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to create new index: %w", err)
+	}
+
+	return nil
+}
+
+func Down_20260226182000(_ *sql.Tx) error {
+	return nil
+}