Does the number of messages in websockets matter?

Question

Socket.io

Will there be a significant difference when sending/receiving messages if they are divided, for example, into 5 parts?

That is, instead of one big message, send 5 small ones.

Answer 1

Yes, the difference is huge. The TCP header weighs from 84 to 120 bytes, which is a lot. In addition, extra messages are an extra load on the server. Therefore, it is much more profitable to send everything through one message than to produce many small ones.