openresty

exhaustion due to synchronous wait When a service caller uses a synchronous call , a large number of waiting threads are generated to occupy system resources. Once the thread resource is exhausted, the service provider's services are also in an unusable state, and the service avalanche effect is generated.Coping strategiesDifferent coping strategies can be used for the different reasons that cause service avalanches: Flow control Improved cache mode Automatic Service expan

been verified by countless homes he is indeed a reliable web application. And Ngx_lua has a lot of extensive applications can be said technically mature, your platform is a OPANAPI application. So in this election Ngx_lua is right! Of course it's not that node is bad! Language is nothing good or bad! Only from the cost of technical maturity to consider!JayceefunBefore using the chapter Big God Openresty, it is really worth a try, than node. js easy t

cumbersome.So, Skynet provides a higher-level package: Socket channel.Specific usage of socket channel in addition to reading Lualib/socketchannel.lua (which is also a good material to understand the socket module), you can also read Lualib/redis.lua and lualib/ Mongo.lua These two database driver written for Skynet.MysqlIn this fork https://github.com/chfg007/skynet, the driver of MySQL (from openresty) is realized.Main documents for Lualib/mysql.lu

frameworks available, Moonstalk is able to effectively develop and host the built in Lua language dynamically generated web-based projects; From basic Web pages to complex applications Lapis, the custom version name of the Nginx that is running the framework of the Moonscript (or LUA) Web application is openresty. Lua Server Pages, a LUA scripting engine plug-in any other approach to the development of embedded networks, offers a dramatic shortcut

the/project file/bin/release/ netcoreapp2.0, if your SDK is version 2.1, then netcoreapp2.0 will become netcoreapp2.1　　If you are not viewing with xftp, you can also use the LS path or the ll path command to view all the files in the development directory, if LS or ll does not follow the path, it means to view all files in the current directory4, using the CD into the netcoreapp2.0 directory, using the Dotnet project name,. dll, which is the description of the success of the operation, but we c

/IP protocol is available for use with the co-scheduler. Cosmo, the "Security Templates" engine, which prevents any code in the template from being used by the application. Coxpcall Lua encapsulates native Pcall and Xpcall compatible with the coprocessor. Luafilesystem, a portable way to access the underlying directory structure and file attributes. Rings, a library that provides a new LUA state from within Lua. As of note There is so much LUA based on the web framework, and pr

nginx[Root@linuxea luajit-2.0.4]# CD ... /nginx### Get Ngx_devel_kit Lua-nginx-moduleBefore compiling, we are here to download the corresponding module Https://github.com/simpl/ngx_devel_kit#warning-using-ndk_all [Root@linuxea local]# yum install git[Root@linuxea local]# git clone https://github.com/simpl/ngx_devel_kit.gitIn downloading a lua-nginx-module[Root@linuxea local]# git clone https://github.com/openresty/lua-nginx-module.git Start compil

should all run as unprivileged users. 1. Install NginxIn the CentOS6 version of the Epel source, the Nginx RPM package has been added, but the RPM package version is lower. If you need an updated version, you can use the official RPM package, or compile the installation using the source package. You can also use some of the two development enhancements of the Nginx version, such as Taobao's Tengine and openresty are good choices. 1.1 Common compil

Lua is an important part of Openresty (Nginx+lua), and when native Lua doesn't meet the requirements, it needs to be extended with Lua in C, like I wrote my own time module below. #include Compile this file into a a.so file for a dynamic-link library, and finally use it in LUA Local A = require "a"; Local des = Libencode.yourownname (); Print (DES)

1. Install the Nginx on the CentOS systemin the CentOS6 version of the Epel source, the Nginx RPM package has been added, but the RPM package version is lower. If you need an updated version, you can use the official RPM package, or compile the installation using the source package. You can also use some of the two development enhancements of the Nginx version, such as Taobao's Tengine and openresty are good choices.1.1 Common compilation parameters

-optimization \ --with-curl--enable-intl-with-xsl--with-gettext \ --enable-zip--enable-soap --disable-debug Compiling the installation Make make Install Copy php.ini from the source folder to the installation directory in PHP.Follow the official web site to modify PHP-FPM and Nginx profiles to set up running users and groups.Start PHP-FPMModify the Openresty configuration file to support PHP-FPM. Add System V script. Cp-r ~/PHP-7.0.15/SAPI/FPM/INIT

operating system Computer principle CPU Multilevel cache process line Cheng Linux design mode Six principles of design pattern 23 common design pattern Scenarios Singleton mode responsibility chain mode MVC IOC AOP UML micro-service idea Conway Law Operations Statistics Technical Support General Monitoring APM Statistical analysis Continuous Integration (CI/CD) Jenkins Environment Separation automation operation and maintenance Ansible Puppet Chef Test TDD theory Unit test pressure test full-

1 ./mysqlslap-a Or: Simulate multiple users (100) 1 ./mysqlslap-a-c200 2, SysbenchFor more information, please refer to: MySQL optimization tuning one: Discovering problems-using sysbench of benchmark testsSecond, performance analysisAs with testing, performance analysis also includes performance analysis of the entire application and performance analysis of individual components, and there are different solutions for the entire ap

privileges;应用路径：/data/web/wordpressnginx 配置：/usr/local/openresty/nginx/conf/site-enable/help.conf3307 will not write, you follow the above method, to operate;To set up a remote connection to MySQL:Where Root is the user name,% means everyone can access, password is the password, try not to use root, security is very importantIf you see the current position, you have succeeded, pay tribute to the small partners learning on the road, together with you

,include is in/usr/ Local directory. 3. Compiling Nginxhttps://codeload.github.com/openresty/lua-nginx-module/tar.gz/v0.9.8https://codeload.github.com/simpl /ngx_devel_kit/tar.gz/v0.2.19shell>./configure--prefix=/usr/local/nginx--add-module=. /ngx_devel_kit-0.2.19--add-module=. /lua-nginx-module-0.9.8--with-pcre=. /pcre-8.214, start nginxshell> cd/usr/local/nginx/sbinshell>./nginx./nginx:error while loading shared libraries: Libluajit-5.1.so.2:cannot

Tags: over figure bak Uwsgi add arc Web ref errFirst, compile the installation moduleIf there is a module in the original package, compile,./configure--with-xxx, if it is a third-party module, you can use--add-module, if there are multiple modules, you only need to use the-add-module command multiple times.Ii. Download the source package Image_fliter and Echo moduleNginx source Download Http://nginx.org/en/download.htmlecho module Download Https://github.com/

Junior dog, want to find a first-tier city work, the main direction is the Linux programming, has the Linux C programming experience, recently has been in the tangle is to learn C + + or Python, ask you to answer, little brother humbly ... Reply content:There is no time to wait for the answer, Python is finished. Basically, as long as the company is not looking at you now what language to want you. Basically look for work when also don't hold "I will xxx" on the delusion that this life only rely

server returns only the body of "Hello World". The client uses WRK in the native test. First place: wrk-go-fasthttp:40w TPS $ time ./wrk -c 100 -d 20 -t 4 http://127.0.0.1:8081/Running 20s test @ http://127.0.0.1:8081/4 threads and 100 connectionsThread Stats Avg Stdev Max +/- StdevLatency 303.36us 483.32us 13.28ms 93.65%Req/Sec 100.77k 6.97k 120.41k 72.50%8026927 requests in 20.02s, 1.09GB readRequests/sec: 400953.00Transfer/sec: 55.83MBreal 0m20.024suser 0m11.548ssys 0m44.760s Second place: W

/nginx/ticket/923The above has been said very clearly. Grpc want to use Nginx proxy.But people do not support it, and there is no plan to develop it."No, there is no plans."Http://mailman.nginx.org/pipermail/nginx/2015-December/049445.html Direct error: WARNING:RPC Failed:status{code=unknown, description=http Status code0Invalid Content-type:nullheaders:Metadata (: status= the, server=openresty/1.11. 2. 2, Date=tue, -Feb . Geneva: .: -GMT) DATA------

collection is more complex than the ON-CPU flame diagram and can be used in the Openresty-systemtap-toolkit package provided by the famous spring elder brother. The Kernel-devel and Debuginfo package installation methods are not described in detail on the project page of Spring brother. Also record here. # kernel-devel没有问题，直接yum安装sudo yum install -y kernel-devel# debuginfo，在CentOS7中需要这样装sudo vim /etc/yum.repos.d/CentOS-Debuginfo.repo修改为enable=1sudo d