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This article introduces the relevant knowledge of "what is the difference between root and alias in Nginx configuration". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Both root and alias can be defined in the location module and are used to specify the real path to request resources, such as:

Location / i/ {root / data/w3;}

When the address http://foofish.net/i/top.gif is requested, the real resource in the server is the / data/w3/i/top.gif file

Note: the real path is the value specified by root plus the value specified by location.

Alias is just like its name. The path specified by alias is an alias of location. No matter how the value of location is written, the real path of the resource is the path specified by alias, for example:

Location / i/ {alias / data/w3/;}

When the http://foofish.net/i/top.gif is also requested, the resource path found on the server is: / data/w3/top.gif

Other differences:

1. Alias can only be used in location, while root can exist in server, http and location.

2. Alias must end with "/", otherwise the file will not be found, and root is optional to "/".

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