What is website availability?
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What is website availability?
It is critical to design, develop, test, and deploy web applications so they can scale well
under heavy and ever-increasing load. However, in spite of the best-laid plans and
preparations, servers can fail for seemingly unknown reasons, causing your site to become
unavailable. If and when a server fails or becomes overloaded, you want to ensure that the
failure won’t adversely affect your business by preventing your customers from accessing
and using your web application. If it does, you risk jeopardizing your bottom line with
lost sales and disgruntled customers who will look to your competitors for goods and
services.
This section defines and describes website availability and failover:
•
“Availability and reliability” on page 23
•
“Common failures” on page 24
•
“Website availability scenario” on page 25
•
“Failover considerations” on page 25
Availability and reliability
In simple terms, availability and reliability mean that you can access a website by entering
the site’s URL in your browser, and all of its features work as intended. Thus, availability
and reliability refer to the uptime of a website, which is often directly related to the
uptime of the web server and other dependent servers, such as a database server, an
application server, or a file server. For a site to be considered available, all of the servers
that provide its functionality must work.
Summary of Contents for COLDFUSION MX-CLUSTERCATS
Page 1: ...macromedia Using ClusterCATS...
Page 56: ...46 Chapter 3 Installing ClusterCATS...
Page 118: ...108 Chapter 4 Configuring Clusters...
Page 156: ...146 Index...
