Visit the website slow resolution processing method

interview question: as Linux Ops, customer reflection open your website server very slow, how to exclude.

1. Web Broadband issues. The server CPU is too high and the content resource is too large.

2. Website internal issues:

• Telnet www.baidu.com Check that the server Web service is turned on and the firewall is blocked. nmap www.baidu.com-p-Curl www.baidu.com or wget www.baidu.com equivalent to browser access.

• 3. If the server is overloaded with servers and services, the server and service links are too many, the load is high, High CPU,Io High

External issues:

• 4. The website purchase bandwidth is full, through the traffic monitoring service production look.

• 5. Chain outside chain (call external website URL has a problem)

To debug a site's front-end debugging tools:

Google Chrome F12

Firefox browser firebug YSlow

IE browser HttpWatch

6. Other issues:

• Individual customer problems, the line of the user and the website bandwidth of the line does not match.

• Cluster architecture issues: Hundreds of servers serving

• Web Service Issues

• database problems, log in to the database to see if there are slow query statements (showproceslist), adjust The MYSQL configuration, and optimize the SQL statement.

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Visit the website slow resolution processing method