Docker-compose links vs external_links

Question

I believe it is simple question but I still do not get it from Docker-compose documentations. What is the difference between links and external_links?

I like external_li

Answer 1

I think external_link will do not do the same as links in docker-compose up command.

links waits for container to boot up and get IP address which is used in etc/hosts file, therefore external_link has already IP:hostname values name described in docker-compose file.

Moreover links will be deprecated