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我目前正在使用 Homestead Vagrant Box 开发几个 Wordpress 网站。然而，Vagrant 服务器存在重大问题，因为它无法更新我的“style.css”文件。有时它会加载文件的旧版本，有时 get 请求会返回“ERR_EMPTY_RESPONSE”。诸如“index.php”之类的其他文件会及时且一致地加载。重新启动 nginx 会不时解决问题，但并非总是如此。

这是我的 nginx 配置的副本：

# nginx.conf
#
# Customizations should be done in conf.d ideally.

# Run as vagrant rather than the default www-data
user vagrant;

# Default to the number of CPU cores available
worker_processes auto;

# Process identifier
pid /run/nginx.pid;

# Enable just-in-time compilation of regex during config parsing
#pcre_jit on;

events {
# max clients = worker_processes * worker_connections
worker_connections 2000;

# Accept all new connectons on a worker process rather than one at a time
multi_accept on;

# Most efficient connection processing method on linux 2.6+
use epoll;
}

http {

## Define MIME types
include /etc/nginx/mime.types;
default_type application/octet-stream;

# Default error log
error_log /var/log/nginx/error.log;

# Default access log
access_log /var/log/nginx/access.log;
# Default access log
access_log /var/log/nginx/access.log;

# PHP Upstream
upstream php {
    server unix:/var/run/php5-fpm.sock;
}

# HHVM Upstream
upstream hhvm {
    server unix:/var/run/hhvm/hhvm.sock;
}

# Default index pages
index index.html index.php index.hh;

# Turn sendfile off in a virtual machine because of issues
#
# The nginx default for sendfile is on, which appears to not jive with something
# about the VM for some things, causing weird encoding issues in Javascript
# that create syntax errors and weird encoding issues in CSS that make it seem
# like your file has been cached forever. Crazy stuff - so off it is.
#
# See - http://jeremyfelt.com/code/2013/01/08/clear-nginx-cache-in-vagrant/
# From - https://github.com/Varying-Vagrant-Vagrants/VVV
#
# Note that this should most likely be turned on in a production environment
sendfile off;

# Don't send out partial TCP frames
tcp_nopush on;
tcp_nodelay on;

# How long each connection should stay idle
keepalive_timeout 65;

# Reset lingering timed out connections. Deflect DDoS and free memory.
reset_timedout_connection on;

# If a request line or header field does not fit into this buffer, then larger
# buffers via large_client_header_buffers are allocated
client_header_buffer_size 1k;

# The maximum number and size of large headers to accept from a client
large_client_header_buffers 4 8k;

# If the requested body size is more than the buffer size, the entire body is
# written to a temporary file. Default is 8k or 16k depending on the platform.
client_body_buffer_size 16k;

# Max size of a body to allow. Essentially the max upload size
client_max_body_size 16M;

# Accommodate server directives that have hundred(s) of server_names, such as large multisite networks
types_hash_max_size 2048;
server_names_hash_max_size 512;
server_names_hash_bucket_size 512;

# Hide nginx version information
server_tokens off;

# Hide PHP version and other related fastcgi headers
fastcgi_hide_header X-Powered-By;
fastcgi_hide_header X-Pingback;
fastcgi_hide_header Link;
proxy_hide_header X-Powered-By;
proxy_hide_header X-Pingback;
proxy_hide_header X-Link;

# Define a zone for limiting the number of simultaneous connections nginx accepts.
# 1m means 32000 simultaneous sessions. We need to define for each server the limit_conn
# value refering to this or other zones.
limit_conn_zone $binary_remote_addr zone=arbeit_conn:10m;

# Define a zone for limiting the number of simultaneous requests nginx accepts.
# Like the connection zone above.
limit_req_zone $binary_remote_addr zone=arbeit_req:10m rate=250r/m;

# Additional configuration (including gzip and SSL)
include /etc/nginx/conf.d/*.conf;

# Virtual hosts
include /etc/nginx/sites-enabled/*;

ssl.conf：

# Default SSL certificates
ssl_certificate         /etc/nginx/ssl/server.crt;
ssl_certificate_key     /etc/nginx/ssl/server.key;

# Protocols and ciphers based on Cloudflare's sslconfig minus RC4
# See - https://github.com/cloudflare/sslconfig
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5:!RC4;
ssl_prefer_server_ciphers on;

# Use a stronger DHE key of 2048-bits
ssl_dhparam /etc/nginx/ssl/dhparam.pem;

# Disable gzip of dynamic content over SSL/TLS
#gzip off;

# Enable sessions cache
# 1m is equal to about 4000 sessions.
ssl_session_cache   shared:SSL:10m;
ssl_session_timeout 10m;

# Name servers to resolve upstream servers
resolver 8.8.4.4 8.8.8.8 valid=300s;

# Enable spdy
spdy_headers_comp 5;
add_header Alternate-Protocol 443:npn-spdy/3.1;

# Enable Strict Transport Security (HSTS)
#map $scheme $hsts_header {
#    https  max-age=31536000;
#}
#add_header Strict-Transport-Security $hsts_header;

gzip.conf：

# Enable Gzip compression
gzip on;
gzip_static on;
gzip_vary on;

gzip_proxied any;
gzip_http_version 1.1;
gzip_buffers 16 8k;

# Compression level (1-9)
gzip_comp_level 5;

# Don't compress anything under 256 bytes
gzip_min_length 256;

# Compress output of these MIME-types
gzip_types
    application/atom+xml
    application/javascript
    application/json
    application/rss+xml
    application/vnd.ms-fontobject
    application/x-font-ttf
    application/x-javascript
    application/x-web-app-manifest+json
    application/xhtml+xml
    application/xml
    font/opentype
    image/svg+xml
    image/x-icon
    text/css
    text/xml
    text/javascript
    text/plain
    text/x-component;

# Disable gzip for bad browsers
gzip_disable  "MSIE [1-6]\.(?!.*SV1)";

任何人都知道可能出了什么问题/对为什么会发生这种情况有任何建议或答案吗？

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