[wp-meta] [Making WordPress.org] #1116: Site Cloner: Prime mShots cache

[Making WordPress.org]

#1116: Site Cloner: Prime mShots cache
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  Reporter:  iandunn      |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  normal       |  Component:  wordcamp.org
Resolution:               |   Keywords:  needs-patch
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Description changed by iandunn:

Old description:

> The plugin uses the mShots service to generate the site screenshots, but
> those are built asynchronously when the first request is received, and
> then cached for 21 days.
>
> Because of that, users will see the default `Generating screenshot...`
> image instead of the actual screenshot. To avoid that, we should have a
> network-wide cron job that makes non-blocking HTTP requests for each of
> the images every 20 days, so that they're always available when a user
> needs them.
>
> The requests will need to append `requeue=true` to the URL, to flush the
> cached image and generate a new one, resetting the cache expiration.
>
> It should sleep for ~2000 milliseconds between each request to be polite,
> or maybe process them in small batches.

New description:

 The plugin uses the mShots service to generate the site screenshots, but
 those are built asynchronously when the first request is received, and
 then retained for 21 days.

 If the image isn't requested at least once every 21 days, it will be
 deleted. If that happens, users will see the default `Generating
 screenshot...` image instead of the actual screenshot when they first load
 the Cloner. To avoid that, we should have a network-wide cron job that
 makes non-blocking HTTP requests for each of the images every 20 days, so
 that they're always available when a user needs them.

 It should sleep for ~2000 milliseconds between each request to be polite,
 or maybe process them in small batches.

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Ticket URL: <https://meta.trac.wordpress.org/ticket/1116#comment:3>
Making WordPress.org <https://meta.trac.wordpress.org/>
Making WordPress.org