The ELK community is quite large, and it's growing rapidly as it is gaining more and more attention. Let's take a look at some of the already existing successful ELK Stack implementations.
LinkedIn is a business oriented social networking site, which is mainly used for professional networking. LinkedIn was launched in May 5, 2003. As of March 2015, LinkedIn reports more than 364 million acquired users, in more than 200 countries and territories.
Refer to http://www.slideshare.net/TinLe1/elk-atlinked-in.
LinkedIn has millions of multiple data centers, tens of thousands of servers, hundreds of billions of log records. It is a challenge to log, index, search, store, visualize, and analyze all of these logs all day, every day. Also, security in terms of access control, storage, and transport has to be maintained. As data grows, the system will scale to more data centers, more servers, and will produce even more logs. It needs an efficient...