Get shadow comparison

GET

https://api-gateway.merge.dev/v1/migrations/:migration_id/comparison

Baseline-vs-candidate runtime metrics from shadow-mirror traffic.

Same window scoping as the dashboard: default lower bound = current shadow-run start; upper bound = the cutover instant once completed/reverted; explicit start_time / end_time override. Returns zeroed sides when ES logging isn’t configured, the migration never shadowed, or nothing has been mirrored yet.

Baseline-vs-candidate runtime metrics from shadow-mirror traffic. Same window scoping as the dashboard: default lower bound = current shadow-run start; upper bound = the cutover instant once completed/reverted; explicit ``start_time`` / ``end_time`` override. Returns zeroed sides when ES logging isn't configured, the migration never shadowed, or nothing has been mirrored yet.

Authentication

AuthorizationBearer

Your gateway API key (mg_ prefix), the same key used for /v1/responses

Path parameters

migration_idstringRequiredformat: "uuid"

Query parameters

start_timestring or nullOptional

end_timestring or nullOptional

Response

Successful Response

migration_idstringformat: "uuid"

baselineobject

Aggregated runtime metrics for one side of a migration (baseline or candidate).

candidateobject

Aggregated runtime metrics for one side of a migration (baseline or candidate).

Errors

422

Unprocessable Entity Error