How to warm envoyProxy before accepting hundred thousands websocket connections?

[SergeiCherevko]

When I start a lot of connections to EnvoyProxy, I see some latency on some clients, and after a couple of minutes, it's gone. So I think I can do something like "warming up" before allowing clients to connect.

I want to set up some parameters:

• initial_stream_window_size
• initial_connection_window_size
• preconnect_policy
• per_connection_buffer_limit_bytes

Which k8s kind should I use for tweaking those parameters? EnvoyFilter?

[arkodg]

some of these are available in ClientTrafficPolicy

• initial_stream_window_size & initial_connection_window_size - https://gateway.envoyproxy.io/docs/api/extension_types/#http2settings
• per_connection_buffer_limit_bytes https://gateway.envoyproxy.io/docs/api/extension_types/#clientconnection