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Service Mesh & mTLS

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What is a service mesh?

In microservices, every service needs to handle: TLS, retries, circuit breaking, tracing, and access control. Doing this in every service is repetitive and error-prone.

A service mesh (Istio, Linkerd, Consul Connect) moves this logic into sidecar proxies — lightweight Envoy proxies injected into every pod automatically. Services talk to localhost; the proxy handles everything else.

Packets in motion — click to inspect:

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