In the context of improving an API on Kubernetes, I am considering using a distributed hash table. My API always receives requests to an URL with this scheme:
Reading the documentation of Istio, it seems pretty direct and easy to get what I want. Indeed, Istio handles a load balancing scheme called
ConsistentHashLB. I such a scheme, the service destination is chosen according to a hash computed from several possible fields: HTTP header name, cookie, source IP, and an HTTP query parameter name.
In my case, I would need to compute the hash according to the
id associated with the request.
That said, I dare some questions:
Given an URL, how could I get its string?
If I get the full URL, how could I get the suffix (the id part
Could I use the field
httpQueryParameterNamefor extracting the id?
If not, how I could add an HTTP header so that later I use
In the paper, the solution seems pretty straightforward, but the lack of examples makes hard things.
Thank you very much in advance