How to get hash code

[nehmebilal]

Hi,

I am trying to use your library to get the hash code of a given string. I'd like to use the hash code for load balancing and I'm looking for a consistent hash code (for a given string, I always get the same hash code).

Here is what it looks like:

int nodeIndex = GetHashCode(sessionId) % nodeCount;
Nodes[nodeIndex].DoWork();

Does this library provide such functionality?

[kentkost]

You will always get the same value for the same string your're trying to hash. But the GetHashCode() will change everytime. Also there is no method of GetHashCode that takes 1 argument.

xxhash is a Non-cryptographic hash method.

xxHash returns a byte array that you will have to convert.

xxHash h = new xxHash();
int nodeIndex = BitConverter.ToInt32(h.ComputeHash(sessionId)) % nodeCount;
Nodes[nodeIndex].Dowork()

This will always give you the same nodeIndex as long as your nodeCount doesn't change.

[nehmebilal]

Perfect thanks!