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Tunnel Hosting Requirements

Running cloudflared instances on a server and proxying traffic through it require computing resources such as CPU and memory on the server. The actual amount of resource usage depends on many variables, including the number of requests per second, bandwidth, network latency and hardware environment.

Although the limit to how much traffic a single cloudflared can proxy will be bound to the hardware capabilities of the underlying machine (including network-wise), you may easily scale up the capacity of your Tunnel by running many instances of cloudflared over the same Tunnel multiple times on different machines or network cards, regardless of the baseline performance of one cloudflared instance.

You may refer to this guide for how to deploy cloudflared replicas to deal with high-load cases.