Modified frontend-proxy example from the official envoy repo used for testing different connection failures cases, configurations of retries and circuit breakers.
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UC: Upstream connection termination in addition to 503 response code.
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UF: Upstream connection failure in addition to 503 response code.
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UO: Upstream overflow (circuit breaking) in addition to 503 response code.
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UC
curl 'localhost:9000/noretry?op=shutdown'
- UC,URX (With retries)
curl 'localhost:9000?op=shutdown'
- UC,UO
Connection termination with retries circuit breaking
siege -n 10 -c 10 'http://localhost:9000/?op=shutdown'
- UF,UO
Connection failure with retries circuit breaking
docker-compose stop service-{1,2,3}
siege -n 10 -c 10 'http://localhost:9000/?op=shutdown'
Use the frontend-envoy -> service-envoy to test cascading failures.
Use load testing tool that support (at least) HTTP 1.1. Otherwise configure routes to accept also HTTP 1.0. ab does support only HTTP 1.0.