Solution: & lt; net. sf. ehcache. util. UpdateChecker & gt;: New update (s) found: 2.6.5

Because ehcache is used in the project, the net. sf. ehcache. util. UpdateChecker doCheck will be printed every time tomcat starts.

I did not pay special attention to it before. When I started Tomcat today, I found the following output information:

{INFO} [07:42:10, 625] <net. sf. ehcache. util. UpdateChecker>: New update (s) found: 2.6.5 [summary. Please check http://ehcache.org fo
R the latest version.

Later, the analysis showed that EhCache had to connect to the ehcache website every time it was started to check the new version, so who was using ehcache, they were clear at a glance. (This backdoor exists in ehcache)

It turns out that Ehcache still has such a backdoor, which has never been noticed before.

To solve the problem, modify the configuration and disable update Detection:
Open ehcache. xml and change the attribute updateCheck of the first line to false, as shown below:
<Ehcache xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance"
Xsi: noNamespaceSchemaLocation = "ehcache. xsd" updateCheck = "false">