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Send Metrics

The metrics collection and analysis plan for Send, a forthcoming Test Pilot experiment.

Analysis

Data collected by Send will be used to answer the following high-level questions:

  • Do users send files?
    • How often? How many?
    • What is the retention?
    • What is the distribution of senders?
  • How do recipients interact with promotional UI elements?
    • Are file recipients converted to file senders?
    • Are non-Firefox users converted to Firefox users?
  • Where does it go wrong?
    • How often are there errors in uploading or downloading files?
    • What types of errors to users commonly see?
    • At what point do errors affect retention?

Collection

Data will be collected with Google Analytics and follow Test Pilot standards for reporting.

Custom Metrics

  • cm1 - the size of the file, in bytes.
  • cm2 - the amount of time it took to complete the file transfer, in milliseconds. Only include if the file completed transferring (ref: cd2).
  • cm3 - the rate of the file transfer, in bytes per second. This is computed by dividing cm1 by cm2, not by monitoring transfer speeds. Only include if the file completed transferring (ref: cd2).
  • cm4 - the amount of time until the file will expire, in milliseconds.
  • cm5 - the number of files the user has ever uploaded.
  • cm6 - the number of unexpired files the user has uploaded.
  • cm7 - the number of files the user has ever downloaded.
  • cm8 - the number of downloads permitted by the uploader.

Custom Dimensions

  • cd1 - the method by which the user initiated an upload. One of drag, click.
  • cd2 - the reason that the file transfer stopped. One of completed, errored, cancelled.
  • cd3 - the destination of a link click. One of experiment-page, download-firefox, twitter, github, cookies, terms, privacy, about, legal, mozilla.
  • cd4 - the location from which the user copied the URL to an upload file. One of success-screen, upload-list.
  • cd5 - the referring location. One of completed-download, errored-download, cancelled-download, completed-upload, errored-upload, cancelled-upload, testpilot, external.
  • cd6 - identifying information about an error. Exclude if there is no error involved. TODO: enumerate a list of possibilities.

Events

NB: due to how files are being tracked, there are no events indicating file expiry. This carries some risk: most notably, we can only derive expiration rates by looking at download rates, which is prone to skew if there are problems in data collection.

upload-started

Triggered whenever a user begins uploading a file. Includes:

  • ec - sender
  • ea - upload-started
  • cm1
  • cm5
  • cm6
  • cm7
  • cd1
  • cd5

upload-stopped

Triggered whenever a user stops uploading a file. Includes:

  • ec - sender
  • ea - upload-stopped
  • cm1
  • cm2
  • cm3
  • cm5
  • cm6
  • cm7
  • cd1
  • cd2
  • cd6

download-limit-changed

Triggered whenever the sender changes the download limit. Includes:

  • ec - sender
  • ea - download-limit-changed
  • cm1
  • cm5
  • cm6
  • cm7
  • cm8

password-added

Triggered whenever a password is added to a file. Includes:

  • cm1
  • cm5
  • cm6
  • cm7

download-started

Triggered whenever a user begins downloading a file. Includes:

  • ec - recipient
  • ea - download-started
  • cm1
  • cm4
  • cm5
  • cm6
  • cm7

download-stopped

Triggered whenever a user stops downloading a file.

  • ec - recipient
  • ea - download-stopped
  • cm1
  • cm2 (if possible and applicable)
  • cm3 (if possible and applicable)
  • cm5
  • cm6
  • cm7
  • cd2
  • cd6

exited

Fired whenever a user follows a link external to Send.

  • ec - recipient, sender, or other, as applicable.
  • ea - exited
  • cd3

upload-deleted

Fired whenever a user deletes a file they’ve uploaded.

  • ec - sender
  • ea - upload-deleted
  • cm1
  • cm2
  • cm3
  • cm4
  • cm5
  • cm6
  • cm7
  • cd1
  • cd4

copied

Fired whenever a user copies the URL of an upload file.

  • ec - sender
  • ea - copied
  • cd4

restarted

Fired whenever the user interrupts any part of funnel to return to the start of it (e.g. with a “send another file” or “send your own files” link).

  • ec - recipient, sender, or other, as applicable.
  • ea - restarted
  • cd2

unsupported

Fired whenever a user is presented a message saying that their browser is unsupported due to missing crypto APIs.

  • ec - recipient or sender, as applicable.
  • ea - unsupported
  • cd6