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Does anyone use Tailscale in production as the network layer between services? Would be interested about hearing experiences.

We use it for to allow us to connect in from the outside (and user to user access etc), but not for service to service connections.

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Works great to connect fly.io apps that are only exposed to flycast private IPv6 addresses. And I think Tailscale services will replace these.

Performance between fly.io web servers in iad region to RDS databases in us-east-1 via subnet routers has been spotty to say the least.

In addition, do people do so in mesh format? Seems expensive to do so for all of your machines, more often the topology I see is a relay/subnet advertisement based architecture that handles L3 and some other system handles L6/L7

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