Publish/Subscribe is a system where peers congregate around topics they are interested in. Peers interested in a topic are said to be subscribed to that topic: Peers can send messages to topics. Each message gets delivered to all peers subscribed to the topic: Example uses of pub/sub: * Chat
Good question! The one-liner pitch is that libp2p is a modular system of protocols, specifications and libraries that enable the development of peer-to-peer network applications.
The go-ipfs config file is a JSON document located at $IPFS_PATH/config which is by default ~/.ipfs/config . It is read once at node instantiation, either for an offline command, or when starting the daemon. Commands that execute on a running daemon do not read the config file at