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Optimize memory allocation in stops-for-route polyline generation #299

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Merged
aaronbrethorst merged 1 commit into from
Feb 6, 2026
+2 −1
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Optimize memory allocation in stops-for-route polyline generation #299

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3 changes: 2 additions & 1 deletion internal/restapi/stops_for_route_handler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -388,7 +388,8 @@ func processTripGroups(

func generatePolylines(shapes []gtfsdb.GetShapesGroupedByTripHeadSignRow) []models.Polyline {
var polylines []models.Polyline
var coords [][]float64
// This prevents repeated memory re-allocation during the loop.
coords := make([][]float64, 0, len(shapes))
for _, shape := range shapes {
coords = append(coords, []float64{shape.Lat, shape.Lon})
}
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