| Website Monitoring |
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WHAT FOR? Monitoring is essential to insure that a website is available to users and Downtime is minimized. Users that rely on a website or an application for work or pleasure will get frustrated or even stop using the application if it is not reliably available. Monitoring can cover many things an application needs to function like network connectivity, Domain Name System records, database connectivity, bandwidth, computer resources including free RAM, CPU load, disk space, events, etc. Commonly measured metrics are Response Time and Availability (or Uptime ), although both consistency and reliability metrics are starting to gain popularity. INSIDE OR OUTSIDE MONITORING Website monitoring can be done from both ''inside'' and ''outside'' of a corporate Firewall . Traditional Network Management solutions focus on ''inside the firewall monitoring'', whereas ''external performance monitoring'' will test and monitor performance issues across the Internet Backbone and in some cases all the way to the End-user . External performance monitoring is also known as end-user monitoring or End-to-end performance monitoring. Real User Monitoring measures the performance and availability experienced by actual users, diagnoses individual incidents, and tracks the impact of a change. WHAT IMPACT? VARIOUS TYPES OF PROTOCOL Website monitoring service can check HTTP pages, HTTPS , FTP , SMTP , POP3 , IMAP , DNS , SSH , Telnet , SSL , TCP , PING and a range of other ports with great variety of check intervals from every 4 hours to every one minute. Typically, most website monitoring services test your server anywhere between once-per hour to once-per-minute. Time performances: for example an HTTP page should answer in less than 1 second (for a download of 16Ko) to be considered as "good". VARIOUS TYPE OF MONITORING You may monitor a single page of your website, but you can also monitor a complete business process (often referred to as multi-step transactions). SERVERS AROUND THE GLOBE Website monitoring services usually have a number of servers around the globe - USA, Europe, Asia, Australia and other locations. By having multiple servers in different geographic locations, monitoring service can determine if a Web server is available across different Networks worldwide. The more locations the better picture on your website availability. TYPES OF WEBSITE MONITORING There are two main types of website monitoring
NOTIFICATION OPTIONS - ALERTS As the information brought by website monitoring services is in most cases urgent and may be of crucial importance, various notification methods, often known as "alerts" may be used: e-mail, regular and cell phones, SMS, fax, pagers, etc. SEE ALSO
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