Zuul is an edge service that provides dynamic routing, monitoring, resiliency, security, and more. Please view the wiki for usage, information, HOWTO, etc https://github.com/Netflix/zuul/wiki
Here are some links to help you learn more about the Zuul Project. Feel free to PR to add any other info, presentations, etc.
Articles from Netflix:
Zuul 1: http://techblog.netflix.com/2013/06/announcing-zuul-edge-service-in-cloud.html
Zuul 2: http://techblog.netflix.com/2016/09/zuul-2-netflix-journey-to-asynchronous.html
Netflix presentations about Zuul:
Strange Loop 2017 - Zuul 2: https://youtu.be/2oXqbLhMS_A
Slides from Netflix presentations about Zuul:
http://www.slideshare.net/MikeyCohen1/zuul-netflix-springone-platform
http://www.slideshare.net/MikeyCohen1/rethinking-cloud-proxies-54923218
Projects Using Zuul:
Info and examples from various projects:
https://spring.io/guides/gs/routing-and-filtering/
http://www.baeldung.com/spring-rest-with-zuul-proxy
https://blog.heroku.com/using_netflix_zuul_to_proxy_your_microservices
http://kubecloud.io/apigatewaypattern/
http://blog.ippon.tech/jhipster-3-0-introducing-microservices/
Other blog posts about Zuul:
https://engineering.riotgames.com/news/riot-games-api-fulfilling-zuuls-destiny
https://engineering.riotgames.com/news/riot-games-api-deep-dive
http://instea.sk/2015/04/netflix-zuul-vs-nginx-performance/