Access logging

    • Any number of access logs per a connection stream.

    • Customizable access log filters that allow different types of requests and responses to be written to different access logs.

    Envoy supports several built-in access log filters and that are registered at runtime.

    Envoy supports pluggable access logging sinks. The currently supported sinks are:

    • Customizable access log formats using predefined fields as well as arbitrary HTTP request and response headers.

    gRPC

    • Envoy can send access log messages to a gRPC access logging service.