Support Cookie based Consistent Hashing / Session Affinity

arkodg commented 9 months ago

Description:

Describe the desired behavior, what scenario it enables and how it would be used.

Would be useful to also add cookie based consistent hashing support which enable sticky session / session affinity use cases

github-actions[bot] commented 8 months ago

This issue has been automatically marked as stale because it has not had activity in the last 30 days.

arkodg commented 7 months ago

Gateway API recently added support for Session Persistence (hard affinity), see details in https://gateway-api.sigs.k8s.io/geps/gep-1619/ It doesnt however add support to add more cookie attributes such as SameSite, its rationale being it should be set to sane defaults e.g. Strict https://gateway-api.sigs.k8s.io/geps/gep-1619/#secure-httponly-samesite

There are multiple instances where users may want to override this, see

@envoyproxy/gateway-maintainers please weigh in, I'm a +1 for

adding this feature, which falls into session affinity (weak affinity) into BTP for v1.1 with support for setting multiple attributes (supported in envoy now)
also support the sessionPersistence field within HTTPRoute using Stateful session filter https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/http/stateful_session/v3/stateful_session.proto#envoy-v3-api-msg-extensions-filters-http-stateful-session-v3-statefulsession
dont add support for BackendLBPolicy, it was specifically designed to support implementations without Route level support for session persistence, Envoy can support it, so imo lets reduce the number of ways to configure sessionPersistence

github-actions[bot] commented 5 months ago

This issue has been automatically marked as stale because it has not had activity in the last 30 days.

github-actions[bot] commented 4 months ago

This issue has been automatically marked as stale because it has not had activity in the last 30 days.

envoyproxy / gateway