如果我已经使用 rake assets:precompile
压缩了Rails的资源文件,那么我是否需要配置nginx来压缩这些文件(gzip设置为on)?我的意思是这样做有意义吗?性能会更好还是更差?谢谢!
如果我已经使用 rake assets:precompile
压缩了Rails的资源文件,那么我是否需要配置nginx来压缩这些文件(gzip设置为on)?我的意思是这样做有意义吗?性能会更好还是更差?谢谢!
运行rake assets:precompile命令后,您需要配置nginx以发送文件的gzip版本,我使用以下配置。
user www-data www-data;
worker_processes 4;
pid /var/run/nginx.pid;
events{
worker_connections 2048;
use epoll;
}
http{
include mime.types;
default_type application/octet-stream;
error_log /var/log/nginx/error.log;
access_log /var/log/nginx/access.log;
server_tokens off;
server_name_in_redirect off;
ignore_invalid_headers on;
gzip off;
sendfile on;
upstream reverse-proxy{
server 127.0.0.1:3000;
server 127.0.0.1:3001;
server 127.0.0.1:3002;
server 127.0.0.1:3003;
}
server{
listen 80;
server_name _;
root /home/www-data/my_website/public;
client_max_body_size 10M;
client_body_buffer_size 512k;
location ~ ^/assets/ {
gzip_static on;
add_header Cache-Control public;
expires 4w;
gzip on;
gzip_vary on;
gzip_proxied any;
gzip_disable "MSIE [1-6]\.";
gzip_comp_level 6;
gzip_types application/x-javascript text/css text/html image/x-icon image/png image/jpeg image/gif;
}
location / {
try_files $uri @ruby;
}
location @ruby {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://reverse-proxy;
}
}
}
rake assets:precompile
时,您真正做的就是将一堆文件连接成一个文件并将其转储到磁盘上。实际上,根据官方文档,这是两个文件:在预编译文件时,Sprockets还会创建您资产的gzipped (.gz)版本。Web服务器通常配置为使用适度的压缩比率作为折衷方案,但由于预编译仅发生一次,因此Sprockets使用最大压缩比率,从而将数据传输大小减少到最小限度。另一方面,Web服务器可以配置为直接从磁盘提供压缩内容,而不是自己解压非压缩文件。
这对您很重要,因为它允许您使用gzip(如果您愿意),但不强制您这样做。 Gzip压缩是真正的压缩(不仅仅是串联文件),可减少您必须传输的数据量,但以处理器功率为代价(压缩和解压缩)。这可能会极大地改善您的站点,具体取决于页面大小和您(以及您的用户)的硬件。rake assets:precompile
命令时,不再创建已压缩版本的文件了 :( https://multiplethreads.wordpress.com/2015/08/08/generate-gzip-assets-with-rails-sprockets-3/ - Nishant下面是完整的配置(我在我的网站上使用它):
http {
passenger_root /usr/local/lib/ruby/gems/1.9.1/gems/passenger-4.0.5;
passenger_ruby /usr/local/bin/ruby;
include mime.types;
default_type application/octet-stream;
server_tokens off;
sendfile on;
keepalive_timeout 70;
gzip on;
gzip_http_version 1.1;
gzip_disable "msie6";
gzip_vary on;
gzip_min_length 1100;
gzip_buffers 64 8k;
gzip_comp_level 3;
gzip_proxied any;
gzip_types text/plain text/css application/x-javascript text/xml application/xml;
add_header Strict-Transport-Security "max-age=16070400; includeSubdomains";
add_header X-Frame-Options DENY;
limit_req_zone $binary_remote_addr zone=one:10m rate=10r/s;
include /opt/nginx/conf/nginx_host.conf;
}
server {
listen 80;
server_name *.domain.com;
root APP_PATH/current/public;
passenger_enabled on;
access_log off;
error_log /dev/null;
# Cross domain webfont access
location ~* \.(?:ttf|ttc|otf|eot|woff|font.css)$ {
add_header "Access-Control-Allow-Origin" "*";
expires 1M;
access_log off;
add_header Cache-Control "public";
}
location ~* \.(ico|css|gif|jpe?g|png)(\?[0-9]+)?$ {
expires max;
}
location ~ ^/(assets|uploaded_assets|system)/ {
root /home/travelobd/rails_apps/travelobd/current/public;
gzip_static on; # to serve pre-gzipped version
expires max;
add_header Cache-Control public;
}
}
server {
listen 80;
server_name static.domain.com;
root APP_PATH/current/public;
location / {
if ($request_filename ~ "\.(jpg|css|gif|png|swf|ico|js)$") {
break;
}
return 404;
}
}
location ~ ^/(assets)/ {
root /path/to/public; # CHANGE THIS
gzip_static on; # to serve pre-gzipped version
expires max;
add_header Cache-Control public;
}
在配置中更改根路径。就是这样简单。
对我有用的是配置Nginx:
location ~ ^/(assets)/ {
gzip_static on;
}
然后在 application.rb 中:
config.middleware.insert_before(Rack::Sendfile, Rack::Deflater)
# Compress JavaScripts and CSS.
config.assets.compress = true
config.assets.js_compressor = Uglifier.new(mangle: false)