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rstoyanchev / spring-websocket-portfolio

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Concurrent websocket connections a tomcat instance #52

Open robinvk6 opened 9 years ago

robinvk6 commented 9 years ago

This is more of a question. What is the max number of concurrent websocket connections a tomcat instance can support? We are looking to serve 20000 connections at any given time. What would be the recommended number of tomcat instances to support the load?

sreeshas commented 9 years ago

A WebSocket is a TCP socket. The total number of websocket connections are determined by number of open file descriptors permitted by OS on which websocket server( tomcat instance in this case) is running.

robinvk6 commented 9 years ago

On a unix machine we have a hard limit of 75000 file descriptors but is there a Hard limit on tomcat's ability to spawn new sockets?