Benjamin Cane 4/17/2026

Are you using traffic mirroring in production? If not, try it out.

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This article discusses traffic mirroring, a technique in Istio and Envoy Proxy that copies live traffic to a secondary target for safe testing and observation. It covers use cases like shadow traffic for validating migrations and out-of-band traffic inspection without impacting users. The article also addresses overhead considerations and tradeoffs, such as running parallel production systems. It's a technical guide for developers and DevOps engineers.

Are you using traffic mirroring in production? If not, try it out.

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