Distributed dynamic sizing and load self-management for a relay infrastructure

A computer system for distributed dynamic sizing and load self-management for a relay infrastructure, the computer system comprising:

• one or more processors, one or more computer readable tangible storage devices, and program instructions stored on at least one of the one or more computer readable tangible storage devices for execution by at least one of the one or more processors, the program instructions executable to:
• determine, by a non-leaving relay in a relay infrastructure, whether a current load level of the non-leaving relay reaches an expansion level of the non-leaving relay and whether an overload condition of the relay infrastructure is satisfied;
• in response to determining that the current load level reaches the expansion level and in response to determining that the overload condition of the relay infrastructure is satisfied, initiate, by the non-leaving relay, an expansion process;
• send to a server, by the non-leaving relay, an expansion message, in response to initiating the expansion process;
• send to the server, by the non-leaving relay, local statistics of endpoints of the non-leaving relay;
• and
• in response to the server selecting from the endpoints an endpoint and converting the endpoint to a first new relay, shift, by the non-leaving relay, one or more endpoints of the non-leaving relay to the first new relay.