Details of fields in real-time logs that are generated by Dynamic Content Delivery Network (DCDN) - Simple Log Service

This topic describes the fields of Dynamic Content Delivery Network (DCDN) real-time logs.

Access logs

Once you enable the access log delivery feature, DCDN starts to generate access logs. The following table describes the fields available in access log entries.

Field	Description	Indexed by Simple Log Service	Used for built-in visualized analysis
unixtime	The time when the request was initiated.	Yes	Yes
domain	The domain name to which the request was sent.	Yes	Yes
method	The request method.	Yes	Yes
scheme	The protocol over which the request was sent.	Yes	No
uri	The requested resource.	Yes	Yes
uri_param	The request parameters.	Yes	No
client_ip	The real IP address of the client that made the request. The first IP address in the `X-Forwarded-For` request header that is carried in the request, which is client_ip. If the client does not use a proxy to connect to the point of presence (POP), the IP address is used by the client to connect to the POP.	Yes	Yes
proxy_ip	The IP address of the proxy. The second IP address in the `X-Forwarded-For` request header that is carried in the request, which is proxy_ip. If the client does not use a proxy to connect to the POP, the value of this field is `-`.	Yes	No
remote_ip	The public IP address of the client that is connected to a DCDN point of presence (POP).	Yes	No
remote_port	The port to which a POP sends requests over the Internet.	Yes	No
refer_protocol	The protocol in the HTTP Referer header.	Yes	No
refer_domain	The domain name in the HTTP Referer header.	Yes	Yes
refer_uri	The URI in the HTTP Referer header.	Yes	No
refer_param	The parameters in the HTTP Referer header.	Yes	No
request_size	The request size, including the request body and the request header. Unit: bytes.	Yes	No
request_time	The response time. Unit: milliseconds.	Yes	Yes
response_size	The response size. Unit: bytes.	Yes	No
return_code	The HTTP status code returned.	Yes	Yes
sent_http_content_range	The value of the Range header in the response, which is configured on the origin server. Example: bytes=0-99/200.	Yes	No
server_addr	The IP address of the POP that responded to the request.	Yes	No
server_port	The port on the POP that responded to the request.	Yes	No
body_bytes_sent	The size of the request body. Unit: bytes.	Yes	No
content_type	The type of the requested resource.	Yes	No
hit_info	The cache hit result. The cache hit results of requests for live streaming resources or dynamic content are not included. Valid values: HIT: a cache hit. MISS: a cache miss.	Yes	Yes
http_range	The value of the Range header in the request. Example: bytes=0-100.	Yes	No
user_agent	The information about the proxy of the client.	Yes	Yes
user_info	The information about the client.	Yes	No
uuid	The request ID.	Yes	No
via_info	The HTTP Via header.	Yes	No
xforwordfor	The X-Forwarded-For header in the request.	Yes	No