title: Does the length of key affect Dictionary performance?
body: <p>I will use a Dictionary in a .NET project to store a large number of objects. Therefore I decided to use a GUID-string as a key, to ensure unique keys for each object.</p>
  
  <p>Does a large key such as a GUID (or even larger ones) decrease the performance of a Dictionary, e.g. for retrieving an object via its key?</p>
  
  <p>Thanks,
  Andrej</p>