Find the errors Twig's paying hosts hit
Twig's hosts pay a monthly fee. This custom scout reports issues concentrated in paying hosts, even when they rank low by occurrences.
What the scout looks at
TypeError: Cannot read properties of null fired 2,340 times this week on the stays of 31 hosts. Four of them pay for Twig's top plan and get 9% of its traffic, but they carry 71% of the issue, so the scout reports it Fig. 1. An issue spread evenly across hosts gets no report.
Share of the issue = Share of traffic×Concentration
| Share of the issue | Share of traffic | Concentration | ||
|---|---|---|---|---|
| Issue A | 71% | 9% | 7.9× | Concentrated |
| Issue B | 9% | 9% | 1.0× | Even spread |
The scout skips issues driven by one browser retrying. The spikes and stuck loops scout covers those.
The report in your inbox
The report names the issue and the hosts, with each host's share of the issue next to its share of Twig's traffic Fig. 2.
The scout itself
This is a custom scout, and its file is in the Self-driving pocket guide. With group analytics, each $exception event carries the host of the stay. The scout compares each host's share of an issue with its share of Twig's traffic over the last seven days. It checks which hosts pay by their Stripe customer ID in Customer analytics. It only reports issues that fired in the last 24 hours. Querying exceptions shows the same join. It runs every 24 hours by default and stays quiet unless something needs the team's attention.
Add this to your scout troop
The scout needs exceptions reaching PostHog, hosts as a group, and hosts in Customer analytics with a Stripe customer ID on each paying host. The Add this scout button in the Self-driving pocket guide opens PostHog with the scout prefilled for review.