具有多个命名位置的 NGINX try_files [英] NGINX try_files with multiple named locations
问题描述
我想根据请求中的自定义标头有条件地从缓存中获取文件.
I want to fetch a file from the cache conditionally, based on a custom header in the request.
如果请求中存在 X-Proxy
标头,则仅当它存在于缓存中时才返回文件.否则,如有必要,请从互联网上获取.
If the X-Proxy
header is present in the request, return the file only if it's present in the cache. Otherwise fetch it from the internet if necessary.
这是我的 .conf
文件:
worker_processes 1;
events {
worker_connections 1024;
}
http {
proxy_cache_path /home/nginx/proxy levels=1:2 keys_zone=one:15m inactive=7d max_size=1000m;
proxy_temp_path /home/nginx/temp;
proxy_buffering on;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_set_header Connection "";
proxy_http_version 1.1;
server {
listen 8000;
location / {
root /home/nginx/preload;
try_files /$uri @local @remote;
}
location @local {
internal;
add_header X-Local true;
add_header X-Cache $upstream_cache_status;
proxy_pass http://$http_host$uri$is_args$args;
proxy_cache one;
proxy_cache_key backend$request_uri;
proxy_cache_valid 200 1h;
proxy_cache_use_stale error timeout invalid_header;
}
location @remote {
resolver 8.8.8.8;
add_header X-Remote true;
add_header X-Cache $upstream_cache_status;
if ($http_x_proxy) {
return 404;
}
proxy_pass http://$http_host$uri$is_args$args;
proxy_cache one;
proxy_cache_key backend$request_uri;
proxy_cache_valid 200 1h;
proxy_cache_use_stale error timeout invalid_header;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
问题是 try_files
指令总是传递到我的 @remote
位置,即使获取的文件已被缓存.当它从 @local
返回时,我如何告诉它找到了该文件?
The problem is that the try_files
directive always passes into my @remote
location, even if the fetched file is cached. How do I tell it that the file was found when it returns from @local
?
推荐答案
try_files
指令只接受一个命名位置,所以显然它适用于最后一个.这个博客文章提出了一个适用于您的情况的解决方法.如果你不阅读整篇文章,你可以在 @local
块的末尾添加以下几行:
try_files
directive only accepts one named location, so apparently it goes for the last one. This blog post proposes a workaround that works in your case. In case you don't won't read the whole post, you can add the following lines at the end of @local
block:
proxy_intercept_errors on;
recursive_error_pages on;
error_page 404 = @remote;
并将您的 try_files
更改为:
try_files /$uri @local;
这篇关于具有多个命名位置的 NGINX try_files的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!