linkerd
Linkerd
Linkerd is a lightweight Service Mesh. It focuses on simplicity and performance (Rust-based proxies). v2.15 (2025) enables Mesh Expansion to VMs.
When to Use
- Low Overhead: You want mTLS and Metrics but can't afford Istio's CPU tax.
- Simplicity: "It just works". No complex configuration for basic features.
- Security: Default-on mTLS and authorization policies.
Core Concepts
Micro-Proxy
Linkerd uses a specialized Rust proxy (not Envoy) that is tiny and fast.
Viz Extension
A dashboard and Prometheus instance pre-configured to show mesh metrics (Success Rate, Latency).
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