Using Radis Hashes .NET

Redis Hashes are essentially maps between string fields and string values. Here I have published on how to get started using Redis with.NET. Once you have installed StackExchange.Redis and have setup console script as per above link, here are the things to do for using Redis Hashes with .NET.

  • Create a new visual studio console project. Then right click select on Manage Nu-Get packages and select online option and search for “StackExchange” in the search field and install StackExchange.Redis.
  • Now to get connected to Redis and its database here is a snippet.   // This should be stored and reused
    var redis = ConnectionMultiplexer.Connect(“localhost”);// IDatabase is simple object which is cheap to build
    IDatabase db = redis.GetDatabase();
  • Lets create a data object.

          var readObject = new ReadObject();

readObject._id = “3”; readObject.Name =”Ravi”;

readObject.Age = “26”; readObject.Address = “Bangalore, India”;

  • Now let’s convert this object into Hash entry list.

var propertyList = ConvertToHashEntryList(readObject);

  • Now save the object into Redis hash

db.HashSet(“object-“+ readObject._id, propertyList.toArray());

  • Now if you want to fetch all keys stored against a particular hash, here is what you should do

var hashEntries = db.HashGetAll(“object-“+ readObject._id);

  • Now if you want to update any particular key of the hash field:

db.HashSet(“object-3”, new []{new HashEntry(“Age”, “25”) });

 

This is how you can save, retrieve and update the data in Hashes of Redis using .NET. Using hashes with StackExchange.Redis is little pain but if you want to build flexible framework around it then hashes are worth the pain.

Here is the video tutorial of the same:

Thanks for dropping by!! Feel free to comment to this post or you can alternatively drop me an email at naik899@gmail.com.

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