I’m using different machines within the same app for different customers and there’s a separate “public” proxy app looking up the correct machineId for each customer by subdomain.
The Cache prefix is ‘/app/*’ and everything works perfectly: customerA.acme.com is fly-replay’ed to another machine than customerB.acme.com (although they share the same cache prefix). I just want to make sure that I can rely on the fact that internally in fly-proxy, the cache key is cache prefix + host
Yes, the proxy cache always includes the hostname, which is added automatically if you only specify a path.
For peace of mind when replaying between customers, you can also specify a cache prefix of customerA.acme.com/app/* to guarantee nothing funky can happen. (If there’s a mismatch in the host the request will still go through, it just won’t be cached).