{"id":5991,"date":"2014-06-05T00:00:00","date_gmt":"2014-06-05T00:00:00","guid":{"rendered":"https:\/\/azure.microsoft.com\/blog\/mvc-movie-app-with-azure-redis-cache-in-15-minutes"},"modified":"2024-07-24T09:20:21","modified_gmt":"2024-07-24T16:20:21","slug":"mvc-movie-app-with-azure-redis-cache-in-15-minutes","status":"publish","type":"post","link":"https:\/\/azure.microsoft.com\/en-us\/blog\/mvc-movie-app-with-azure-redis-cache-in-15-minutes\/","title":{"rendered":"MVC movie app with Azure Redis Cache in 15 minutes"},"content":{"rendered":"\n

The new Azure Redis Cache<\/a> is really easy to plug into your Azure web app I had it plugged into my MVC Movie sample app<\/a>, deployed to Azure and running in under 17 minutes (15 minutes to plug it in and test locally)<\/p>\n\n\n

\"graphical<\/figure>\n\n\n\n

The cache is about 100 times faster than banging on a database By fetching hot data from the cache, you not only speed up your app but you can reduce the DB load and increase its responsiveness for other queries. You can download my completed sample here. This is what I did to plug the Redis cache into my MVC movie sample:<\/p>\n\n\n\n

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  1. Log on to the Azure\u00a0 portal<\/a> and select create a new cache
    This step can take up to 15 minutes, but I\u2019m not counting that in my time For complete instructions see     How to Use Azure Redis Cache<\/a>\u00a0 It\u2019s critical you create the cache is the same location (data center) that you create your web site I tested this by moving my web site to a different location, and cache latency increased by a factor of 25 For detailed instructions see Create a Redis Cache<\/a> You can download my MvcMovie as a starter sample Alternatively, you can download my completed sample and update the cache endpoint ( URL ) and credentials, then follow along<\/li>\n\n\n\n
  2. Copy the cache name rediscachewindowsnet and the password (hit the keys<\/strong> button in the properties blade of the portal to see the cache name and password)<\/li>\n\n\n\n
  3. Add the NuGet package StackExchangeRedis<\/strong> You\u2019ll also need to restore the NuGet packages in my sample if you\u2019re using that<\/li>\n\n\n\n
  4. From the package manager console, run Update-Database<\/strong> You might have to exit and restart Visual Studio after restoring NuGet packages to see the Update-Database<\/strong> command<\/li>\n\n\n\n
  5. Plug the connection info into your controller:<\/li>\n<\/ol>\n\n\n
    \npublic class MoviesController : Controller\n{\n   private MovieDBContext db = new MovieDBContext();\n   private static Lazy lazyConnection = new Lazy(() =>\n   {\n      return ConnectionMultiplexerConnect(KeysconStr);\n   });\n\n   public static ConnectionMultiplexer Connection\n   {\n      get\n      {\n         return lazyConnectionValue;\n      }\n   }\n<\/pre><\/div>\n\n\n
    Warning<\/strong>: Never store credentials is source code To keep this sample simple, I\u2019m showing them in the source code See Windows Azure Web Sites: How Application Strings and Connection Strings Work<\/a> for information on how to store credentials. Note that the connection is stored as a static variable so you don\u2019t have to create a new connection on each request A get method is used so you can check that the connection is valid, and if the connection has been dropped, the connection is reestablished.<\/p>\n\n\n\n
    Create a new class containing the SampleStackExchangeRedisExtensions<\/strong> class:<\/p>\n\n\n
    \npublic static class SampleStackExchangeRedisExtensions\n{\n   public static T Get(this IDatabase cache, string key)\n   {\n      return Deserialize(cacheStringGet(key));\n   }\n\n   public static object Get(this IDatabase cache, string key)\n   {\n      return Deserialize(cacheStringGet(key));\n   }\n\n   public static void Set(this IDatabase cache, string key, object value)\n   {\n      cacheStringSet(key, Serialize(value));\n   }\n\n   static byte[] Serialize(object o)\n   {\n      if (o == null)\n      {\n         return null;\n      }\n      BinaryFormatter binaryFormatter = new BinaryFormatter();\n      using (MemoryStream memoryStream = new MemoryStream())\n      {\n         binaryFormatterSerialize(memoryStream, o);\n         byte[] objectDataAsStream = memoryStreamToArray();\n         return objectDataAsStream;\n      }\n   }\n\n   static T Deserialize(byte[] stream)\n   {\n      BinaryFormatter binaryFormatter = new BinaryFormatter();\n      if (stream == null)\n         return default(T);\n\n      using (MemoryStream memoryStream = new MemoryStream(stream))\n      {\n         T result = (T)binaryFormatterDeserialize(memoryStream);\n         return result;\n      }\n   }\n}\n<\/pre><\/div>\n\n\n
    The\u00a0SampleStackExchangeRedisExtensions<\/strong>\u00a0class makes it easy to cache any serializable type.\u00a0You\u2019ll need to add the\u00a0[Serializable]<\/a>\u00a0attribute to your model.<\/p>\n\n\n
    \n[Serializable]\npublic class Movie\n<\/pre><\/div>\n\n\n
    Find all the instances of\u00a0\u00a0Movie\u00a0movie = dbMoviesFind(id);\u00a0and replace them with:<\/p>\n\n\n
    \n\/\/Movie movie = dbMoviesFind(id);\nMovie movie = getMovie((int)id);\n<\/pre><\/div>\n\n\n
    In the POST Edit and Delete methods, evict the cache with the following call:<\/p>\n\n\n
    \nClearMovieCache(movieID);\n<\/pre><\/div>\n\n\n
    Add the following code to the movie controller The\u00a0getMovie<\/strong>\u00a0method uses the standard on demand cache aside approach:<\/p>\n\n\n
    \nMovie getMovie(int id)\n{\n   Stopwatch sw = StopwatchStartNew();\n   IDatabase cache = ConnectionGetDatabase();\n   Movie m = (Movie)cacheGet(idToString()); \n\n   if (m == null)\n   {\n      Movie movie = dbMoviesFind(id);\n      cacheSet(idToString(), movie);\n      StopWatchMiss(sw);\n      return movie;\n   }\n   StopWatchHit(sw); \n\n   return m;\n} \n\nprivate void ClearMovieCache(int p)\n{\n   IDatabase cache = connectionGetDatabase();\n   if (cacheKeyExists(pToString()))\n      cacheKeyDelete(pToString());\n} \n\nvoid StopWatchEnd(Stopwatch sw, string msg)\n{\n   swStop();\n   double ms = swElapsedTicks \/ (StopwatchFrequency \/ (10000));\n   ViewBagcacheMsg = msg + msToString() +\n       \ufffd? PID: \ufffd? + ProcessGetCurrentProcess()IdToString();\n} \n\nvoid StopWatchMiss(Stopwatch sw)\n{\n   StopWatchEnd(sw, \u201cMiss \u2013 MS:\ufffd?);\n} \n\nvoid StopWatchHit(Stopwatch sw)\n{\n   StopWatchEnd(sw, \u201cHit \u2013 MS:\ufffd?);\n}\n<\/pre><\/div>\n\n\n
    Add the\u00a0ViewBagcacheMsg<\/strong>\u00a0code to the\u00a0Views\\Shared\\_Layoutcshtml\u00a0<\/em>file so you get timing information on every page:<\/p>\n\n\n
    \n
    \n        @RenderBody()\n        
    \n