server.connection-timeout default value

	/**
	 * Time in milliseconds that connectors will wait for another HTTP request before
	 * closing the connection. When not set, the connector's container-specific default
	 * will be used. Use a value of -1 to indicate no (i.e. infinite) timeout.
	 */
	private Integer connectionTimeout;

I don’t know if this is a bug or a feature. However, I definitely feel that this is not reasonable, in tomcat, the default connectionTimeout value is 2000. In spring boot, however, he does not have a default value, causing the system to have a large number of TIME_WAIT. I think a default value should also be given when it is automatically transferred. Not Null or 0.

[wilkinsona]

Tomcat’s default is 60 seconds. Spring Boot will leave Tomcat to use that default unless you have configured it. I’ve just verified this behaviour using one of our samples.

If you want someone to spend some more time looking at this, then you’ll need to provide a small sample that shows Spring Boot configuring Tomcat with a timeout other than its default.

[happier2]

@wilkinsona no,no,no

you can use ab -k to request , connection TIME_WAIT too.

By default, nginx will use protocal http/1.0 to connect with your spring boot application, which will cause lots of short connection between nginx and tomcat. Lots of short connection(frequently open tcp and close tcp) will produce lots of TIME_WAIT.