Each stream type can collect different sets of data. A data set lets you define the format of the data received by your origin server, giving you the ability to choose or ignore specific parameters and their elements from log data fields.

In fields with whitespace and other non-printable or non-US ASCII characters (for example, octets outside of the range from 0x21 to 0x7E), these characters are hex-encoded as per RFC-1738 URL encoding.

If you're looking for sample logs (JSON and structured) with data, see Log format.

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Data set support
Some data sets may not be available for logging depending on the product enabled for the property you want to monitor. For example, Web security and EdgeWorkers information data set fields are not supported for the Cloud Wrapper products.

Cache data

Select the fields from this group to get information about the edge cache, and additional breadcrumbs data about the HTTP request-response cycle.

Data element	Examples	Description
Breadcrumbs	//BC/%5Ba=23.33.41.20 ,c=g,k=0,l=1,m=1%5D	Returns additional breadcrumbs data about the HTTP request-response cycle for improved visibility into the Akamai platform. This field is available only for Adaptive Media Delivery, Download Delivery, Object Delivery, Dynamic Site Accelerator, Ion, and API Acceleration products. a – the component IP of the node or host processing the request, such as the edge or origin host c – the letter identifier for the Akamai network component that as involved during that phase of the request (c - cache parent, g - edge host, p - peer host, o - origin, or w - Cloud Wrapper) j (optional) – forward list k – the request end time (in milliseconds) between when the edge host accepts the connection and receives the request header, including initial metadata parsing time and SSL overhead l – the turnaround time (in milliseconds) between receiving the end of the request headers and gathering the breadcrumb, including fetching the object from another server in case of a miss, or synchronous validation of cached object’s freshness, fetching the object from the disk, performing ESI processing, and computing response headers m – the DNS lookup time (in milliseconds) as the delta between the start of the request and the completion of the DNS lookup To log this parameter, you need to enable the Breadcrumbs behavior in your property.
Cacheable	0 1	Returns `1` if the object is cacheable based on response headers and metadata. If you want to check the caching hierarchy for cacheable objects, use the Cache status and Breadcrumbs fields. If cache status returns `1`, the request was served from the edge cache. If `0`, see the c value of the Breadcrumbs field to check who served the request.
Cache status	0 1	Returns `0` if there was no object in the cache, and `1` if the object was present in the cache. In the event of negatively cached errors or stale content, the object is served from upstream even if cached.

Common media client data

You can choose the CMCD data set to get standardized Common Media Client Data from media traffic for log analysis, QoS monitoring, and media delivery optimization. This field is available only for the Adaptive Media Delivery product. See the CMCD specification on the Consumer Technology Association website for details on specific fields.

Data element	Examples	Description
CMCD	cmcd=//1.0@V/bl=21600,br=1426,cid=%22akam-email%22,d=6006,mtp=11100,ot=m,sf=h,sid=%229f36f5c9-d6a2-497b-8c73-4b8f694eab749f36f5c9-d6a2-497b-8c73%22,tb=1426,dl=18500,nor=%22../300kbps/track.m4v%22,nrr=%2212323-48763%22,su,bs,rtp=12000,pr=1.08,sf=d,st=v%22	This field returns a Common Media Client Data payload for media traffic: v – CMCD version, e. g. 1.0 bl – the buffer length (in milliseconds) associated with the media object being requested rounded to the nearest 100 ms br – encoded bitrate (in kbps) of the object cid – an unique ID for the current content d – the object playback duration (in milliseconds) of the requested object mtp – the throughput (in kbps) between client and server, as measured by the client, and rounded to the nearest 100 kbps ot – object type (audio only, video only, muxed audio & video, etc.) sid – an unique GUID for the current streaming session tb – the highest (top) bitrate (in kbps) rendition that the client is allowed to play nor – the relative path of the next object to be requested nrr – the next request object (nor) will be a partial object request, this field returns the byte range to be requested su – the startup field returns without value if the object is needed urgently due to startup, seeking or recovery after a buffer-empty event everything bs – the buffer starvation field returns without value if the buffer was starved between the prior request and this object request, resulting in the player rebuffering state and the video or audio playback stopped rtp – the requested maximum throughput (in kbps) for the client to deliver the content, rounded to the nearest 100 kbps sf – the streaming format, such as MPEG Dash, HLS or Smooth Streaming st – stream type, either `v` (VOD) or `l` (live stream) pr – the playback rate field returns, `2` if double speed, `0` if not playing, in some cases `1` if real-time playback (usually omitted)

Content protection

To log fields in the Content protection data set, you need to enable the Enhanced Proxy Detection with GeoGuard behavior on your property.

Data element	Examples	Description
Content protection information	=//epd@feature-override/v1/or/epd@geoguard/v1/dp/2	Returns Enhanced Proxy Detection metrics for media delivery and proxy protection reports, including the EPD action on the request. See Reporting metrics and dimensions for details.

Using the Content protection information field, you can get or calculate the media delivery and proxy protection reporting metrics listed in Reporting metrics and dimensions.

EdgeWorkers information

Choose from these data fields to log EdgeWorkers data, if enabled in your property. This includes adding the EdgeWorkers behavior for each of the properties you want to monitor. This data set is not supported for the Cloud Wrapper products.

Data element	Examples	Description
EdgeWorkers usage	//4380/4.0/1/-/0/4/# 1,2//4380/4.0/4/-/0/4/#0,0//4380/ 4.0/5/-/1/1/#0,0	Provides information about the EdgeWorkers ID, version, event  handler, reasons for turning EdgeWorker off, returned errors and metrics  such as heap usage, CPU, and wall time. The field returns the data in  the `//[EdgeWorker-Id]/[Version]/[Event Handler]/[Off Reason]/[Logic Executed]/[Status]/#[Metrics]`  format. See DataStream reports in the EdgeWorkers guide for more details.
EdgeWorkers execution	c:4380:7:161:162:161:n::: 12473:200\|C:4380:3:0:4:0:n::: 6967:200\|R:4380:20:99:99:1:n:::35982:200	Provides EdgeWorkers execution information, including the stage of execution, the EdgeWorker ID, process, total and total stage time (in milliseconds), used memory (in kilobytes), ghost flow, error code, HTTP status change when the response is generated using the API, CPU flits consumed during processing, tier ID for the request, indirect CPU time (in milliseconds) and ghost error code. See DataStream reports in the EdgeWorkers guide for more details.

Geo data

Choose from these fields to get geolocation data about the requests, such as its country and city of origin.

Data element	Examples	Description
Billing region	8	The Akamai geographical price zone from where the request was served.
Country/region	US	The ISO code of the country or region where the request originated.
Edge IP	23.50.51.173	The IP address of the edge server that served the response to the client. This field returns data that may be useful while resolving issues with your account representative. To monitor this parameter in your logs, you need to update your stream's property configuration to include a Log Request Details behavior that logs the Edge Server IP field. See Log custom parameters.
Server country/region	US	The ISO code of the country or region from where the request was served.
State	New%20Hampshire	The URI-encoded name of the state where the request originated.
City	Bangalore	The city where the request originated.

Log information

Choose from these log data fields to get customer and request identification data, including the request timestamp.

Data element	Examples	Description
CP code	2097150	The Content Provider code associated with the request that identifies a particular subset of traffic and content for billing, reporting, and monitoring served on the Akamai platform.
Edge attempts	13	The number of attempts to download the content from the edge in a specific time interval, based on the number of total manifest requests received.
Request ID	2256a92	The identifier of the request assigned by the server. See Akamai Pragma headers for details.
Request time	1612215703.120	The Unix epoch time in seconds when the request when the edge server accepted the request from the client.
Stream ID	58736	The unique identifier of the stream that logged the request data. You can log this field to troubleshoot and group logs between different streams.

Message exchange data

Choose from these fields to get log data gathered along the request-response cycle, including client information, request and response details, and bytes count.

If the origin provides an uncompressed object, but the edge server provides the object to the client as compressed, it's reported and billed as compressed. See the Bytes and Total bytes fields.

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Using stream data for billing
We recommend using raw log data for basic traffic analysis and monitoring CDN health.
You should take these limitations into account before using data served on your stream for audit, compliance, or billing purposes. See DataStream use cases.

Data element	Examples	Description
Brotli status	baC	This field reports the status when serving a Brotli-compressed object: a – the client accepts Brotli, and the request passes the status value in the Accept-Encoding header b – the client was served with a Brotli object, and the response passes the status value in the Content-Encoding header u – the edge server decompressed a Brotli-encoded object at some point C – the edge server used Brotli compression to serve the current request r – the edge server recompressed the object from gzip to Brotli to serve the current request z – the edge server recompressed the object from Brotli to gzip to serve the current request This field is available only for Ion Standard, Ion Premier and Ion Media Advanced products.
Bytes	0 14995	The content bytes served in the response body, excluding HTTP headers. For HTTP/2, this includes overhead bytes.
Client IP	198.18.77.18 2001:0db8:85a3:<>0000:0000:8a2e:0370:7334	The IPv4 or IPv6 address of the requesting client. See IPv6 in RFC 5952.
Cookie	country=AU;%20sessionId=12a8f83b	This field contains cookies received in the HTTP request headers from the client. This field is RFC-1738 escaped, replacing spaces and other special characters, and separated by the `;` character. See the note on hex-encoding above the table. To monitor this parameter in your logs, you need to update your stream's property configuration to include a Log Request Details behavior that logs the Set-Cookie header. See Log custom parameters.
File size bucket	1KB-10KB	This field groups the response content into different buckets by size in kilobytes, megabytes and gigabytes.
HTTP status codes	0 200 206 404	The HTTP status code sent in the response. Returns `0` if the TCP connection to the client ended before the server sent a response.
Object size	-1 0 1 2	The size of the object matching the `Content-Length` response header, excluding HTTP response headers. Range requests don’t affect this field’s value. Returns the download object size if the header is not present, or `-1` if not downloaded fully from the origin.
Origin Content-Length	10282	The compressible Content-Length object value (in bytes) in the response header from the origin. This field is available only for Ion Standard, Ion Premier and Ion Media Advanced products.
Overhead bytes	400	TCP/IP/ETH overhead in bytes for the request and response, without HTTP or UDP overhead.
Protocol type	HTTP/1.1 HTTPS/1.1 HTTP/2 HTTP3	The protocol of the response-request cycle.
Query string	q=foo&submit=true	The query string in the incoming URI from the client. To monitor this parameter in your logs, you need to update your stream's property configuration to set the Cache Key Query Parameters behavior to include all parameters. See Cache Key Query Parameters.
Request host	splat-traffic.205400.akamai.com	The value of the Host header in the request with the domain name of the server and the TCP port number on which the server is listening. If no port is included, the default port for the service requested is implied. For example, 443 for an HTTPS URL, and 80 for an HTTP URL. A `Host` header must be present in HTTP/1.1 requests. If a request lacks this header or has more than one, the server may respond with a 400 status code. See Host in RFC 7230.
Request method	GET POST PUT OPTIONS	The HTTP method of the request.
Request path	path1/path2/file.ext	The path to a resource in the incoming URI without query parameters. See the Query string field.
Request port	80 443	The client TCP port number of the requested service.
Response Content-Length	-1 0 5000	The size of object data returned to the client without HTTP response headers. The Akamai Edge logs the object size even if there is no `Content-Length` header. Returns `-1` if the size can’t be determined—for example, when the connection ended before the edge server received the complete object from the origin.
Response Content-Type	text-plain text-html	The value of the `Content-Type` header in the response with the media type of the returned content. Returns `-` if unknown or not set. The 304 Not Modified response usually does not return this header. See: Content-Type in RFC 7231 Partial Content in RFC 7233 Media types
TLS overhead time	- 3	The elapsed time in milliseconds between when the edge server accepts the connection and the completion of the TLS handshake. Returns a number for SSL connections, and `-` for non-SSL connections.
TLS version	- TLSv1.3 QUIC	The protocol of the TLS handshake. Returns `-` for non-TLS connections.
Total bytes	839 9376	The bytes served in the response including the content, protocol overheads, and request body bytes. Protocol overheads include HTTP headers and UDP/TCP/IP/ETH overheads.
Uncompressed size	46251	The size (in bytes) of the uncompressed object, if compressed before sending to the client.
User-Agent	Mozilla%2F5.0+%28Macintosh %3B+Intel+Mac+OS+X+10_14_3%29	The URI-encoded value of the `User-Agent` header in the request. It lets edge servers identify the application, operating system, vendor, or version of the requesting user agent. This field is RFC-1738 escaped. See the note on hex-encoding above the table, User-Agent in RFC 7231 and RFC 2616. To monitor this parameter in your logs, you need to update your stream's property configuration to include a User Agent behavior that logs this header. See Log custom parameters.

Request header data

Choose from these fields to extract data coming from the incoming requests' headers, such as the referrer URLs or byte ranges.

Data element	Examples	Description
Accept-Language	en en-US en-US,en;q=0.9 zh-CHS,%20en-us	The value of the `Accept-Language` header in the request with a list of acceptable human languages for response. Returns `-` if this field is not enabled or the client didn’t send the header. See Accept-Language in RFC 7231. To monitor this parameter in your logs, you need to update your stream's property configuration to include a Log Request Details behavior that logs the Accept-Language header. See Log custom parameters.
Max age	300	The time in seconds that the object is valid for positive cache responses.
Range	37334-42356 1024-1024 0-50,100-150,300-	Provides a single byte range or a comma-separated list of byte ranges. Bytes are numbered from 0. Returns `-` if not a request range. See Range in RFC 7233.
Referer	https://example.com/search?q=jobs	The URL of the resource from which the requested URI was followed. This field is RFC-1738 escaped. See the note on hex-encoding above the table and Referer in RFC 7231. To monitor this parameter in your logs, you need to update your stream's property configuration to include a Log Request Details behavior that logs the Referer header. See Log custom parameters.
X-Forwarded-For	8.47.28.38 203.0.113.195,%2070.41.3.18 2001:db8:85a3:8d3:1319:8a2e:370:7348	Returns the contents of the `X-Forwarded-For` header, including the last IP address of a client connecting to a web server through an HTTP proxy or load balancer. It helps to debug, gather statistics, and generate location-dependent content and by design exposes privacy sensitive information, such as the IP address of the client. See Forwarded For in RFC 7239. To monitor this parameter in your logs, you need to update your stream's property configuration to include a Log Request Details behavior that logs the X-Forwarded-For header. See Log custom parameters.

Network performance data

Choose from these fields to get data on the edge server and client performance, and error codes when serving the requests for troubleshooting.

Data element	Examples	Description
Asnum	64496	The Autonomous System Number (ASN) of the request's Internet service provider.
DNS lookup time	3	The elapsed time in milliseconds between the start of the request and the completion of the DNS lookup in a multi-domain config, if one was required. For cached IP addresses, this value is `0`.
Error code	ERR_ACCESS_DENIED\|fwd_acl	A string describing the problem with serving the request.
Last byte	1	The last byte of the object that was served in this response. `0` indicates a part of a byte-range response. This field is now available for all products supported by DataStream 2.
Request end time	0 1 3	The elapsed time in milliseconds it takes the edge server to fully read the request.
Time to first byte	12	The time taken to download the first byte of the received content in milliseconds.
Turnaround time	16	The elapsed time in milliseconds between when the last request header is received and the first byte of the reply is written to the client socket.
Transfer time	0 1 125	The time in milliseconds from when the edge server is ready to send the first byte of the response to when the last byte reaches the kernel.

Web security

Select the Security rules field to log the Web Application Firewall (WAF) end user's activity data, including the security policy ID, non-deny, and deny rules. This data set is not supported for the Cloud Wrapper products.

Data element	Examples	Description
Security rules	ULnR_28976\|3900000:3900001:3900005:3900006:BOT-ANOMALY-HEADER	This field returns data when the request triggers any configured WAF or Bot Manager rules in the `Security policy ID \| Non-deny rules separated by : \| Deny rule` format. To monitor this parameter in your logs, you need to update your stream's property configuration to include a Web Application Firewall (WAF) behavior or add the hostnames using Security Configurations.

Midgress traffic

When you Create a stream or Edit a stream, you can choose to log midgress traffic within the Akamai network, such as between two edge servers. This feature also requires enabling the Collect midgress traffic option in the DataStream behavior for your property in Property Manager. As a result, the second slot in the log line returns a numeric value:

0, if the request was processed between the client device and edge server (CLIENT_REQ), and isn't logged as midgress traffic
1, if the request was processed by an edge server within the region (PEER_REQ), and is logged as midgress traffic
2, if the request was processed by a parent Akamai edge server in the parent-child hierarchy (CHILD_REQ), and is logged as midgress traffic

If logging midgress traffic is not enabled on your contract, contact the Akamai support team.

Custom fields

If you want your stream to collect other custom data fields, specify them in the Log Request Details behavior of your property. See Log custom parameters.