Redis Pub/Sub implements the messaging system where the senders (in redis terminology called publishers) sends the messages while the receivers (subscribers) receive them. The link by which the messages are transferred is called channel. In Redis, a client can subscribe any number of channels.
Read moreHow many channels can Redis support?
So the Data collector is always running, it retrieves the trades and sends them to the channel; there is one channel for every market (600+) .
Read more