ADR02: custom web push backend or which service

Decision Drivers

  • Everyone with a supported device should be prompted to subscribe, whether they have a user account or not

  • We need to be able to target specific users with accounts for individual notifications, e.g. for updates to their service requests

    • It should be possible to link a subscription to a specific user account later - they might first subscribe anonymously and then login later.

  • User data should only be used for the purposes of providing the services in the app - it should never be used for marketing or shared with other companies.

  • We might also want to be able to notify only a segment of users, e.g. users interested in service outages but not latest news, or users in particular ward(s).

Options considered

  • Custom-built backend using pywebpush, custom javascript for subscription management and notification handling in client

  • pushpad.xyz

  • onesignal

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