Tengine反向代理响应慢，但其实后台程序已经快速处理完成的问题

发布于 2021-11-19 18:34:22 字数 7274 浏览 794 评论 3

从nginx日志中发现，响应时间有时候会长,可是后端处理时间却很小（如：响应时间是5秒，处理时间却是0.08），在后端web系统日志上查看这条请求记录响应时间却很小（不到1秒）。

不知道为什么会出现这种情况，（服务器性能一切正常）

哪位遇到了这样的情况。

Tengine配置如下：

---------------------------------------------------------------------------------------

#user nobody;
worker_processes auto;
#worker_rlimit_nofile 100000;

#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;

pid logs/nginx.pid;

events {
use epoll;
# multi_accept on;
worker_connections 8192;
}

# load modules compiled as Dynamic Shared Object (DSO)
dso {
# load ngx_http_fastcgi_module.so;
# load ngx_http_rewrite_module.so;
load ngx_http_cache_purge_module.so;
}

http {
server_tokens off;

add_header X-UA-Compatible 'IE=Edge,chrome=1'; # 这里是自定义头
#include blockip.conf;

include mime.types;
default_type application/octet-stream;

log_format access '$remote_addr - $remote_user [$time_local] "$host$uri" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" $request_time';

#access_log logs/access.log access;

sendfile on;
#tcp_nopush on;
client_max_body_size 10m;
client_body_timeout 300;

#keepalive_timeout 0;
keepalive_timeout 65;

client_header_buffer_size 32k;#默认是4k
large_client_header_buffers 4 32k;

gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;

upstream myligerproject {
#这里指定多个源服务器，ip:端口,80端口的话可写可不写
server localhost:9101 fail_timeout=300s;
server localhost:9102 fail_timeout=300s;

#check interval=3000 rise=2 fall=5 timeout=1000 type=http;
#check_keepalive_requests 100;
#check_http_send "HEAD / HTTP/1.1rnConnection: keep-alivernrn";
#check_http_send "HEAD / HTTP/1.0rnrn";
#check_http_expect_alive http_2xx http_3xx;

ip_hash;
}

#注：proxy_temp_path和proxy_cache_path指定的路径必须在同一分区
proxy_temp_path /export/home/process/tengine/proxy_temp_dir;
#设置Web缓存区名称为cache_one，内存缓存空间大小为200MB，1天没有被访问的内容自动清除，硬盘缓存空间大小为30GB。
proxy_cache_path /export/home/process/tengine/proxy_cache_dir levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=30g;

# forbid ip visit
server {
listen 80 default;
return 500;
}

server {
listen 80;
server_name ***.com;
#index index;
}

server {
listen 80 ;
server_name www.***.com;

#location ~ .*.(gif|jpg|jpeg|png|ico|cur|rar|css|js|zip|flv|swf|doc|ppt)$ {
location ~ /public/.*.(xls|gif|jpg|jpeg|png|ico|cur|rar|zip|flv|swf|doc|ppt|js|css)$ {
root /export/home/process/webroot/;
access_log off;
expires 7d;
}

location ~ ^/favicon.ico$ {
root /export/home/process/images/;
access_log off;
expires 7d;
}

location ~ /detail_.*.html$ {
proxy_cache cache_one;
#对不同的HTTP状态码设置不同的缓存时间
proxy_cache_valid 200 304 302 24h;
#以域名、URI、参数组合成Web缓存的Key值，Nginx根据Key值哈希，存储缓存内容到二级缓存目录内
proxy_cache_key $host$uri$is_args$args;

proxy_pass http://myligerproject;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_connect_timeout 600;
proxy_read_timeout 600;
proxy_send_timeout 600;

#expires 1d;
}

#用于清除缓存，假设一个URL为http://192.168.8.42/test.txt，通过访问http://192.168.8.42/purge/test.txt就可以清除该URL的缓存。
location ~ /purge(/.*) {
#设置只允许指定的IP或IP段才可以清除URL缓存。
allow all;
#allow 127.0.0.1;
#allow 192.168.0.0/16;
#deny all;
#proxy_cache_purge cache_one $host$1$is_args$args;
}

location / {
proxy_pass http://myligerproject/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_connect_timeout 600;
proxy_read_timeout 600;
proxy_send_timeout 600;
}

location ~ ^/NginxStatus/ {
stub_status on; #Nginx 状态监控配置
access_log off;
}

location /status {
check_status;

access_log off;
# allow SOME.IP.ADD.RESS;
# deny all;
}

error_page 404 /404.html;

# redirect server error pages to the static page /50x.html
#
#error_page 500 502 503 504 /Application/detail_error;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}

server {
listen 80;
server_name static.***.com;

#access_log logs/host.access.log main;

large_client_header_buffers 4 16k;
client_max_body_size 300m;
client_body_buffer_size 128k;
proxy_connect_timeout 600;
proxy_read_timeout 600;
proxy_send_timeout 600;

proxy_buffer_size 64k;#设置代理服务器（nginx）保存用户头信息的缓冲区大小
proxy_buffers 4 32k;#proxy_buffers缓冲区，网页平均在32k以下的话，这样设置
proxy_busy_buffers_size 64k;#高负荷下缓冲大小（proxy_buffers*2）
proxy_temp_file_write_size 64k;#设定缓存文件夹大小，大于这个值，将从upstream服务器传递请求，而不缓冲到磁盘

location ~ /sell/.*.(gif|jpg|jpeg|png|ico|JPG|GIF|PNG|JPEG)$ {
root /export/home/data/photo/;
access_log off;
expires 7d;
}

location ~ /buy/.*.(gif|jpg|jpeg|png|ico|JPG|GIF|PNG|JPEG)$ {
root /export/home/data/photo/;
access_log off;
expires 7d;
}

location ~ /public/.*.(xls|gif|jpg|jpeg|png|ico|cur|rar|zip|flv|swf|doc|ppt|js|css)$ {
root /export/home/process/img/;
access_log off;
expires 7d;
}
}
}