Production environment Tomcat starts slowly

The specific reason did not study, is probably a random number seed generation speed slowed down, directly copy a solution, belongs to the memo material solution

There are two ways to solve this problem:

1) solve in Tomcat environment

You can use non-blocking entropy Source by configuring the JRE.

Add this line to the catalina.sh:

-djava.security.egd=file:/dev/./urandom

Can.

After joining and then starting Tomcat, the entire boot time is reduced to server startup in 2912 Ms.

2) Resolve in the JVM environment

Open the $java_path/jre/lib/security/java.security file and find the following:

securerandom.source=file:/dev/urandom

Replaced by

securerandom.source=file:/dev/./urandom

Production environment Tomcat starts slowly