what is 503

Ngx_http_limit_conn_module modules that limit the number of connectionsWe often encounter this situation, the server traffic is abnormal, the load is too large and so on. For large traffic malicious attack access, will bring a waste of bandwidth,

Nginx as an HTTP server, with the following basic features: Process static files, index files, and auto index; Open file descriptor buffering. Non-cached reverse proxy acceleration, simple load balancing and fault tolerance. FastCGI, simple load

In many SELECT statements, * is a method for all columns of a given table. However, the * number can also help you understand the structure of the table, and it can also help filter the data in the query. When you use only the * number without

Number of IIS ConnectionsGeneral purchase of virtual host friends are familiar with the purchase, will limit the number of IIS connections, this side first from the general do not understand the code user perspective of IIS connectionsAs the name

All the following commands are run under aix6.1.0.0 (the command for viewing AIX version information is oslevel) 1. chown Reference website Http://baike.baidu.com/view/1229019.htm   Usage: Chown BEPs: BEPs/cnaps2/Rel/BEPs/bin/be *   2. passwd file

CC attack Principle CC is mainly used to attack pages. everyone has this experience: when visiting a Forum, if the forum is large and there are many visitors, the page opening speed will be slow, right ?! Generally, the more people access the forum,

Hello, this time I will introduce you to the management of users and user groups in liunx. You must know that the liunx system is basically a file, that is to say, users who want to translate the entire system can simply copy the relevant files.

We often encounter 404, 500, 302 and other hints, what exactly do they mean? In addition to these common status codes, what are some of the possible status codes that we have not encountered yet? Here I made a summary, share with you. HTTP Status

System: Centos6.0 Introduction: NIS (Network Information Services) was first Sun Yellow Pages (yp ); In a large domain, what if multiple Linux Hosts require the same account and password for each host? If you can have an account server to manage the

I used Nginx + FastCGI to run our Bugzilla system, but some people visited nginx 503 a few days ago. I checked the error log on the server, it is found that Nginx connection FastCGI times out. Let me briefly describe my ideas on analyzing and

Nginx overviewNginx ("engine x") is a high-performance HTTP and reverse proxy server and an IMAP/POP3/SMTP proxy server. Nginx was developed by the Rambler.ru site, where Igor Sysoev is the second highest traffic in Russia. The first public version 0

User and group management related commands are described and used:In general, the commands involved are: Useradd,usermod,passwd,userdel,groupadd,groupmod,gpasswd,groupdel,chage,chsh,chfn,id,w, Who,whoami, Su,finger1, useradd:create a new user or

1, the first entry is the installation of the boot interface650) this.width=650; "border=" 0 "width=" 503 "height=" 386 "src=" http://files.jb51.net/file_images/article/201611/ 2016110911545810.png "style=" border:1px solid rgb (204,204,204);

MDS log: To view HTTP trafic, first turn on HTTP logging for the BlackBerry MDS Connection Service Reference: How to turn on HTTP logging for the BlackBerry MDS Connection Service http://www.blackberry.com/btsc/KB02393 Log timer interval

Linux Process Permissions Analysis In Linux, about file permissions, most people contact more, but also more familiar with the understanding. But there is little knowledge of process permissions. This article summarizes the Linux system under the

General purchase of virtual host friends are familiar with the purchase, will limit the number of IIS connections, this side first from the general do not understand the code user perspective of IIS connectionsAs the name implies, the maximum number

We often encounter 404, 500, 302 and other hints, what do they mean? In addition to these common status codes, what are some of the status codes that we have not encountered but are likely to appear? Here I made a summary, share with you. HTTP

CC Attack principle CC is primarily used to attack pages. We all have such experience, that is, when visiting the forum, if this forum is relatively large, more people visit, open the page will be slower, right?! Generally speaking, the more people

The http status of a website is very important for website maintenance personnel. When a website encounters a problem, we must first diagnose the http status of the website, so as to further confirm where the problem occurs, we often encounter

Today, using the intranet to deploy Web services, using mobile phone access (mobile phone access to the Intranet Server Web page, see the previous blog),The basic steps are as follows:1.visual Studio generates a Web service and deploys it to a