Reliably Updating a Messaging System

A system, comprising:

• one or more messaging servers comprising a set of component program modules, the component programs comprising:
• a dispatcher, configured to, responsive to receiving a connection request from a client application, establish a network connection with the client application and transfer the connection;
• a plurality of connection managers, configured to process and transfer messages between client applications, wherein a connection manager is communicatively coupled to a client application by the network connection transferred by the dispatcher, wherein the communication manager is communicatively coupled to the dispatcher by a separate connection;
• a message router, configured to generate routing instructions used by the connection managers to direct messages sent between client applications, wherein the message router is communicatively coupled to the dispatcher by a socket connection, wherein the message router is connected to each of the plurality of connection managers through a plurality of messaging queues;
• and
• a state store, configured to store information about states of connections as well as routing states of the messages and delivery states of the messages, wherein the state store is independent from memory allocated to the component program modules, wherein the state store is communicatively coupled to each of the component program modules by memory connections between each of the component program modules and the state store.