Webhooks

[jdorn]

Client libraries can accept a cached list of experiment overrides. Currently, the only way to keep that up to date is to periodically pull from the Growth Book API. There should be an option to push this data instead with a webhook.

Use https://github.com/agenda/agenda as a simple MongoDB job queue

• Add a new webhook property to organizations that stores an endpoint and signing secret
• UI in settings to add a webhook
• Define a webhook job with an organizationId property
• Make the job unique so only a single one per organization exists at a time
• Create the job when an experiment is created or updated and the organization has a webhook defined
• If a job fails, retry it a few times with exponential back-off
• After 3 failures, email the organization owner and stop retrying