cloudflare/references/tail-workers/patterns.md

Tail Workers Processing Decisions

Define the destination contract and required event coverage before writing transformations.

Task	Documentation
Export supported telemetry without a custom consumer	Exporting OpenTelemetry Data
Process and forward custom execution events	Tail Workers
Aggregate metrics rather than retain individual events	Analytics Engine from Tail Workers
Choose filters based on execution and request fields	Tail handler
Review sensitive request data handling	TailRequest

Decide which producers, routes, failures, and successful requests each destination needs. If sampling is appropriate, specify how it affects the questions the data must answer. Minimize retained fields, test transformation and serialization against representative events, and check destination rejection behavior.

Keep producer identity when combining events from multiple Workers. Define how delivery failures become visible before adding fallback storage or batching infrastructure. See configuration.md for deployment ownership.