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Get Weather - Step 5 - Improving performance

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  1. //performance tuning...
  2. class WeatherService{
  3.  
  4. 	private $cache;
  5.  
  6. 	public function WeatherService(){
  7. 		//some initialization...
  8. 		$cache = new MemCache();
  9. 	}
  10.  
  11. 	public function getWeatherInfo($city, $method){
  12.  
  13. 		if ($cache->get()[$city])
  14. 			return $cache->get($city);
  15.  
  16. 		$res = shell_exec("./getWdr.sh {$city}");
  17.  
  18. 		$this->cache->set($city,$res);
  19.  
  20. 		if ($methos=="CL")
  21. 			return convertFrToC($res);
  22.  
  23. 		return $res;
  24. 	}
  25.  
  26. 	private function convertFrToC($val){
  27. 		return (($val+40)*5/9)-40;
  28. 	}
  29.  
  30. }
  31.  
  32.  
  33. class MemCache{
  34.  
  35. 	private $mem;
  36.  
  37. 	public function MemCache(){
  38. 		//some intitialization here...
  39. 		$mem = array();
  40. 	}
  41.  
  42. 	public function get(){
  43. 		return $this->mem;
  44. 	}
  45.  
  46. 	public function set($key, $val){
  47. 		echo "putting [$val] in $key";
  48. 		$this->mem[$key] = $val;
  49. 	}
  50. }

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