1 / 5
Fill in: 'We ___ production traffic to a new service without affecting real responses.'
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We 'mirror traffic' — the standard collocation for duplicating requests to a shadow target. The other options aren't idiomatic here.
2 / 5
Fill in: 'We ___ the shadow service's responses against the production ones.'
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We 'diff' responses — the standard engineering collocation for comparing outputs. The other options don't fit this sense idiomatically.
3 / 5
Fill in: 'Shadow traffic must never ___ real side effects like emails or charges.'
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We 'trigger side effects' — the standard collocation for something causing an unwanted action. The other options are less idiomatic here.
4 / 5
Fill in: 'We ___ discrepancies between shadow and live results in a dashboard.'
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We 'surface discrepancies' — the standard collocation for making mismatches visible. The other options aren't idiomatic here.
5 / 5
Fill in: 'Once confidence is high, we ___ the shadow test and promote the service.'
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We 'retire' a test — the standard collocation for formally ending it once it's served its purpose. The other options are less idiomatic here.