Blog
Sentry release health and CORS: error reporting from single-page apps without blocked ingest
Configure allowed origins in Sentry project settings; self-hosted relays still need correct tunnel or CORS for browser SDKs.
1 min read
sentryobservabilitycors
Source maps
Upload maps in CI so stack traces resolve; unrelated CORS noise in devtools often masks missing maps.
Scrub PII from breadcrumbs before they hit the ingest pipeline.
Sampling
High trace sample rates can amplify preflight traffic to your API if spans wrap cross-origin calls.
Align release names between frontend and backend projects for correlated incidents.