Incident retro - Miro images

Incident from: 2021-01-08

Incident till: 2021-01-08

Retro held: 2021-01-08

• Timeline

• Analysis of causes

• Actions

Timeline

See https://wellcome.slack.com/archives/C01FBFSDLUA/p1610103089000200

8 January 2021

10.43 Alex: Should I be able to view images from Miro? I was just looking at some image search results: https://wellcomecollection.org/images?query=nydjbrr7 but any time I click "View image" I get taken to an error page: “We are working to make this item available.” (in #wc-platform-feedback)

10.48 James calls this an incident

10.51 Jamie moves discussion to wc-incident-response

10.51 Jamie: item page data being fetched when using the View button: should be image page data; identifies branch with problem

10.55 Jamie creates PR

11.17 James: The change was made on the 2 Dec [2020], and probably deployed around then.

11.31 James: reports that fix seems to be working on stage; asks others to confirm

11.44 Fix deployed to prod but not showing up.

11.54 James confirms problem resolved after cache busting

Analysis of causes

Item page data was being fetched when using the View button: should have been fetching the image page data

Actions

JG:

• Find out how many images were affected, and how many users were affected

• Find out actual date of deployment

• Go through the broken example to improve understanding (with JP)