This guide covers the headers that Moovweb XDN injects into responses making them visible to your client code.
x-xdn-version: version fingerprint that includes XDN version number, site build number and UTC timestamp of the build
x-xdn-t: timings of all the components in Moovweb critical path that served your request
x-xdn-request-id: the unique ID of the request on Moovweb XDN infrastructure
x-xdn-hit-request-id: the unique ID of the request whose cached response is being returned (not present if cache miss)
x-xdn-caching-status: indicates why a response was or was not cached. See Caching.
x-xdn-surrogate-key: a space separated list of secondary cache keys used for cache clearing
The format is
x-xdn-t is an order list of timings: values are prepended at response time. Thus reading them left to right goes from the outermost edge component to the innermost cloud component that handled the request.
The components are:
- Level 1 Edge POP =
- Level 2 Shield POP =
- Custom Moovweb Proxy =
All times are in milliseconds.
|ot||The total time spent processing the request|
|or||The time spent matching routes at the edge pop|
|of||The time spent fetching the response at the edge pop, either from the shield pop or from the serverless backend or origin|
|oc||The caching status for the edge pop|
|ow||The free memory in bytes on the edge pop after processing the request|
|oq||The time spent at the edge pop in fetch queue during the request coalescing|
|st||The time spent processing the request at the shield pop|
|sr||The time spent matching routes at the shield pop|
|sf||The time spent waiting for a response from the serverless backend or origin, including request queueing|
|sc||The caching status for the shield pop|
|sw||The free memory in bytes on the shield pop after processing the request|
|sq||The time spent at the shield pop in fetch queue during the request coalescing|
|bf||The time spent waiting for a response from the serverless backend or origin, including request queueing|
|pc||The number of times the request was scheduled to execute. If it's present it is normally |
|wp||The time spent waiting for your application (Next, Nuxt, Sapper, Angular, etc...) or origin to respond|
The following headers are used internally by Moovweb staff to troubleshoot issues with requests.
x-xdn-status: statuses of different components in Moovweb XDN critical path that serviced your request
x-xdn-components: versions of different components in Moovweb XDN critical path that serviced your request