How to upload a Large CSV file really fast in Laravel - php

Question

This question has been asked so many times , I have tried couple of way also but this time I am stuck since my requirement is bit specific . None of the generic methods worked for me .
Details
File Size = 75MB
Total Rows = 300000
PHP Code
protected $chunkSize = 500;
public function handle()
{
try {
set_time_limit(0);
$file = Flag::where('imported','=','0')
->orderBy('created_at', 'DESC')
->first();
$file_path = Config::get('filesystems.disks.local.root') . '/exceluploads/' .$file->file_name;
// let's first count the total number of rows
Excel::load($file_path, function($reader) use($file) {
$objWorksheet = $reader->getActiveSheet();
$file->total_rows = $objWorksheet->getHighestRow() - 1; //exclude the heading
$file->save();
});
$chunkid=0;
//now let's import the rows, one by one while keeping track of the progress
Excel::filter('chunk')
->selectSheetsByIndex(0)
->load($file_path)
->chunk($this->chunkSize, function($results) use ($file,$chunkid) {
//let's do more processing (change values in cells) here as needed
$counter = 0;
$chunkid++;
$output = new ConsoleOutput();
$data =array();
foreach ($results->toArray() as $row)
{
$data[] = array(
'data'=> json_encode($row),
'created_at'=>date('Y-m-d H:i:s'),
'updated_at'=> date('Y-m-d H:i:s')
);
//$x->save();
$counter++;
}
DB::table('price_results')->insert($data);
$file = $file->fresh(); //reload from the database
$file->rows_imported = $file->rows_imported + $counter;
$file->save();
$countx = $file->rows_imported + $counter;
echo "Rows Executed".$countx.PHP_EOL;
},
false
);
$file->imported =1;
$file->save();
echo "end of execution";
}
catch(\Exception $e)
{
dd($e->getMessage());
}
}
So the above Code runs really fast for the 10,000 rows CSV File.
But when I upload a larger CSV its not working .
My Only restriction here is that I have to use following logic to transform each row of the CSV to KeyPair value json data
foreach ($results->toArray() as $row)
{
$data[] = array(
'data'=> json_encode($row),
'created_at'=>date('Y-m-d H:i:s'),
'updated_at'=> date('Y-m-d H:i:s')
);
//$x->save();
$counter++;
}
Any suggestions would be appreciated , Its been more than and Hour now and still only 100,000 rows have been inserted
I find this is really slow
Database : POSTGRES