nginx中使用srcache_nginx模块构建缓存
nginx中可以将lua嵌，让nginx执行lua脚本，可以处理高并发，非阻塞的处理各种请求，openresty项目中可以使用nignx可以直接构建 srcache_nginx + redis 缓存，而不用通过动态语言来处理（QPS可以轻松的提高了）
看一下openresty中srcache-nginx-module的工作流
好了废话不多说
一、安装
pcre
cd /usr/local/src wget -c ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.38.tar.gz tar zxf pcre-8.38.tar.gz
drizzle7
cd /usr/local/src/ wget http://openresty.org/download/drizzle7-2011.07.21.tar.gz tar xzvf drizzle-2011.07.21.tar.gz cd drizzle-2011.07.21/ ./configure make make install export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
JIT(Just-In-Time Compiler)
wget -c http://luajit.org/download/LuaJIT-2.0.2.tar.gz tar xzvf LuaJIT-2.0.2.tar.gz cd LuaJIT-2.0.2 make install PREFIX=/usr/local/luajit echo "/usr/local/luajit/lib" > /etc/ld.so.conf.d/usr_local_luajit_lib.conf ldconfig export LUAJIT_LIB=/usr/local/luajit/lib export LUAJIT_INC=/usr/local/luajit/include/luajit-2.0
nginx
cd /usr/local/src wget -c http://nginx.org/download/nginx-1.9.9.tar.gz git clone https://github.com/simpl/ngx_devel_kit.git git clone https://github.com/openresty/set-misc-nginx-module.git git clone https://github.com/openresty/memc-nginx-module.git git clone https://github.com/openresty/echo-nginx-module.git git clone https://github.com/openresty/lua-nginx-module.git git clone https://github.com/openresty/srcache-nginx-module.git git clone https://github.com/openresty/drizzle-nginx-module.git git clone https://github.com/openresty/rds-json-nginx-module.git wget http://people.freebsd.org/~osa/ngx_http_redis-0.3.7.tar.gz tar zxf nginx-1.9.9.tar.gz cd nginx-1.9.9 ./configure \ --prefix=/usr/local/nginx-1.9.9 \ --add-module=../memc-nginx-module \ --add-module=../srcache-nginx-module \ --add-module=../ngx_devel_kit \ --add-module=../ngx_image_thumb \ --add-module=../redis2-nginx-module \ --add-module=../echo-nginx-module \ --add-module=../lua-nginx-module \ --add-module=../set-misc-nginx-module \ --add-module=../ngx_http_redis-0.3.7 \ --with-pcre=../pcre-8.38 \ --with-pcre-jit make && make install
redis
cd /usr/local wget http://download.redis.io/releases/redis-3.0.6.tar.gz tar zxf redis-3.0.6.tar.gz cd redis-3.0.6 make ./src/redis-server
配置文件
daemonize yes pidfile /var/run/redis-6379.pid port 6379 bind 127.0.0.1 timeout 0 tcp-keepalive 0 loglevel notice logfile stdout databases 16 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb slave-serve-stale-data yes slave-read-only yes repl-disable-tcp-nodelay no slave-priority 100 maxmemory 8096mb maxmemory-policy volatile-ttl appendonly no appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-entries 512 list-max-ziplist-value 64 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 256mb 64mb 60 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10 aof-rewrite-incremental-fsync yes
nginx的简单配置
user www www;
worker_processes auto;
error_log logs/error.log info;
pid logs/nginx.pid;
events {
use epoll;
worker_connections 65536;
}
http {
include mime.types;
default_type application/octet-stream;
charset utf-8;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
log_format srcache_log '$remote_addr - $remote_user [$time_local] "$request" '
'"$status" $body_bytes_sent $request_time $bytes_sent $request_length '
'[$upstream_response_time] [$srcache_fetch_status] [$srcache_store_status] [$srcache_expire]';
server_tokens off;
keepalive_timeout 60 20;
client_header_timeout 3m;
client_body_timeout 3m;
send_timeout 3m;
client_header_buffer_size 16k;
large_client_header_buffers 4 32k;
server_names_hash_max_size 512;
server_names_hash_bucket_size 64;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
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 memcache {
server 192.168.1.30:12000;
keepalive 10;
}
upstream redis {
server 127.0.0.1:6379;
keepalive 20;
}
server
{
listen 90 default;
server_name _;
return 444;
}
include vhosts/*.conf;
}
二、srcache+memcache
server {
listen 8099;
server_name 192.168.1.30;
root /data/www;
index index.php index.html index.htm;
default_type text/plain;
access_log logs/host.access.log main;
location /hello{
echo "This is a test";
}
location = /lua-version {
content_by_lua '
if jit then
ngx.say(jit.version)
else
ngx.say(_VERSION)
end
';
}
location /memc {
internal;
memc_connect_timeout 100ms;
memc_send_timeout 100ms;
memc_read_timeout 100ms;
set $memc_key $query_string;
set $memc_exptime 300;
memc_pass memcache;
}
location ~ \.php$ {
charset utf-8;
default_type text/html;
set $key $uri$args;
srcache_fetch GET /memc $key;
srcache_store PUT /memc $key;
add_header X-Cached-From $srcache_fetch_status;
add_header X-Cached-Store $srcache_store_status;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
第一次访问的时候
Connection:keep-alive Content-Encoding:gzip Content-Type:text/html; charset=UTF-8 Date:Wed, 20 Jan 2016 16:32:32 GMT Keep-Alive:timeout=20 Server:nginx Transfer-Encoding:chunked Vary:Accept-Encoding X-Cached-From:MISS X-Cached-Store:STORE
第二次访问
Connection:keep-alive Content-Encoding:gzip Content-Type:text/html; charset=UTF-8 Date:Wed, 20 Jan 2016 16:33:17 GMT Keep-Alive:timeout=20 Server:nginx Transfer-Encoding:chunked Vary:Accept-Encoding X-Cached-From:HIT X-Cached-Store:BYPASS
可以自定义哪些需要访问
三、srcache+redis
redis配置测试
server {
listen 9001;
server_name 192.168.1.30;
root /data/www;
index index.php index.html index.htm;
default_type text/plain;
access_log logs/host.access.log main;
location /testx{
echo '1';
}
location ~ .*\.php {
srcache_store_private on;
srcache_methods GET;
srcache_response_cache_control off;
set $key $uri;
set_escape_uri $escaped_key $key;
srcache_default_expire 172800;
srcache_fetch GET /redis_get $key;
srcache_store PUT /redis_set key=$escaped_key&exptime=$srcache_expire;
add_header X-Cached-From $srcache_fetch_status;
set_md5 $md5key $key;
add_header X-md5-key $md5key;
add_header X-Cached-Store $srcache_store_status;
add_header X-Key $key;
add_header X-Query_String $query_string;
add_header X-expire $srcache_expire;
add_header X-uri $uri;
access_log logs/9001-access.log srcache_log;
include fastcgi_params;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_intercept_errors on;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_split_path_info ^(.+\.php)(.*)$;
fastcgi_param PATH_INFO $fastcgi_path_info;
}
location = /redis_get {
internal;
set_md5 $redis_key $args;
redis_pass redis;
}
location =/show{
echo $request_uri;
echo $args;
}
location = /redis_set {
internal;
set_unescape_uri $exptime $arg_exptime;
set_unescape_uri $key $arg_key;
set_md5 $key;
redis2_query set $key $echo_request_body;
redis2_query expire $key $exptime;
redis2_pass redis;
}
location = /one {
set $value 'first';
redis2_query set one $value;
redis2_pass redis;
}
location = /get {
set_unescape_uri $key $arg_key; # this requires ngx_set_misc
redis2_query get $key;
redis2_pass redis;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
可以查看日志缓存是否命中
四、lua
Nginx下Lua处理阶段与使用范围
init_by_lua http set_by_lua server, server if, location, location if rewrite_by_lua http, server, location, location if access_by_lua http, server, location, location if content_by_lua location, location if header_filter_by_lua http, server, location, location if body_filter_by_lua http, server, location, location if log_by_lua http, server, location, location if timer
lua代码
ngx.req.read_body() -- explicitly read the req body
local data = ngx.req.get_body_data()
if data then
ngx.say("body data:")
ngx.print(data)
return
end
-- body may get buffered in a temp file:
local file = ngx.req.get_body_file()
if file then
ngx.say("body is in file ", file)
else
ngx.say("no body found")
end
local res = ngx.location.capture("/foo/index.php")
if res then
ngx.say("status: ", res.status)
ngx.say("body:")
ngx.print(res.body)
end
nginx中配置
location /lua_test {
content_by_lua_file conf/lua_test.lua;
}
参考文章
https://github.com/openresty/lua-nginx-module
http://chenxiaoyu.org/2011/10/30/nginx-modules.html
http://www.ttlsa.com/nginx/nginx-lua-redis/
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