Cirrus (codename) has no limits to the number of concurrent users you can have connected with your developer key, although we ask that you let us know if you'll have more than about 10,000 concurrent users. and we reserve the right to throttle or block any developer who causes a disruptive or egregious load to the system, but we've only ever had to do that on one occasion.
Flash Media Server 4 includes support for RTMFP. the developer edition of FMS 4 has a limit of 50 connections, which is probably what you were seeing.
1) although we ask that you let us know if you'll have more than about 10,000 concurrent users ...
Ok, but what will you do when we will let you know this info??
2) but we've only ever had to do that on one occasion...
When and why???
Where to write to? It is possible to have unlimited RTMFP server in own disposal to avoid overloading your data center? Thanks