Use try_files to redirect /dir1 to /dir2 in nginx -

i have part of websites still using old urls.

essentially, want:

http://hostname/app1/static/dir1 --> http://hostname/app1/static/dir2.

the static directory may contain other resources being used.

i tried following getting cycle caused nginx abort:

location ^~ /app1/static/  {     alias /home/app1_user/app1/static/;     try_files /app1/static/dir1 /app1/static/dir2; } 

what should instead?

if understand correctly, -

a file, e.g. /app1/static/file.jpg try_files in /home/app1_user/app1/dir1/file.jpg, /home/app1_user/app1/dir2/file.jpg , lastly 404 if can't found.

location ~ ^/app1/static/(.*)$ {     alias /home/app1_user/app1/static/;     try_files dir1/$1 dir2/$1 =404; }