doc: Polish README.md of sentinel-cluster-server-envoy-rls module

Signed-off-by: Eric Zhao <sczyh16@gmail.com>
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Eric Zhao 2020-04-07 11:00:17 +08:00
parent e1435974c6
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## Rule configuration
Currently Sentinel RLS token server supports dynamic rule configuration via the yaml file.
Sentinel RLS token server supports dynamic rule configuration via the yaml file.
The file may provide rules for one *domain* (defined in Envoy's conf file).
In Envoy, one rate limit request might carry multiple *rate limit descriptors*
(which will be generated from [Envoy rate limit actions](https://www.envoyproxy.io/docs/envoy/latest/api-v2/api/v2/route/route.proto#envoy-api-msg-route-ratelimit)).
(which will be generated from [Envoy rate limit actions](https://www.envoyproxy.io/docs/envoy/v1.12.1/api-v2/api/v2/route/route.proto#envoy-api-msg-route-ratelimit)).
One rate limit descriptor may have multiple entries (key-value pair).
We may set different threshold for each rate limit descriptors.