...
https://en.wikipedia.org/wiki/HTTP_ETag
Implementation
Testing
http://127.0.0.1:8080/logging-demo/rest/read/test
Links
EELF
git clone https://github.com/att/EELF.git
https://tomcat.apache.org/download-80.cgi
https://spring.io/tools/sts/all
https://www.sitepoint.com/inside-java-9-part-ii/#performanceimprovements