What is the estimated number of daily authorizations for the application?
The number of total logins (authentication load) and the number of page "hits" each authenticated user makes directly affects the number of daily authorizations (authorization load). A web page "hit" usually requires an authorization. Therefore, think of the authorization load of an application as total authorizations per day.
Note: When estimating the authorization load, we recommend that you begin with an evaluation interval of 24 hours. However, depending on the requirements of your enterprise, you can compare your daily results over a period of weeks or months to gain a better understanding usage throughout the year.
All users requesting the same number of pages per login is unlikely, so calculating total authorizations begins with determining the percentage of logins that generate one page hit, which the following represents:
authentication_load * percentage_of_authenticated_users * page_visits = daily_authorizations
Represents the estimated number of daily authentications for the application.
Represents the percentage of authenticated users that visit the same number of pages after login.
Represents the number of pages a particular set of authenticated users visits after login.
Note: A page can result in multiple GET/POST because it contains multiple objects. The total number of authorizations per page is the number of GET requests, plus the number of POST requests, minus the number of extensions the Web Agent ignores. For the purpose of this guide, each of the following examples assume that a page visit generates one GET/POST. For more information about configuring a Web Agent to allow access to specific resources types without checking policies, see the Web Agent Configuration Guide.
Represents the number of authorizations a particular set of authenticated users require.
Example 1: Estimate Daily Authorizations
As detailed in Estimate Daily Authentications, the portal application has an authentication load of 88,000 logins. Twenty-five percent of which visit one page after login:
88,000 * 0.25 * 1 = 22,000 authorizations
However, some logins generating more than one page hit is more likely.
Example 2: Estimate Daily Authorizations
The portal application has an authentication load of 88,000 logins:
88,000 * 0.5 * 10 = 440,000 authorizations
88,000 * 0.25 * 15 = 330,000 authorizations
The total authorizations per day (authorization load) is the sum of each of the authorization calculations.
Example 3: Estimate Daily Authorizations
The portal application has an authentication load of 88,000 logins:
Note: The percentage of authenticated users must equal 100 percent because each authenticated user generates at least one page hit.
Therefore, the authorization load for the portal application is 792,000.
The following table illustrates each of the previous examples:
Page Hits |
Percent of Total Logins |
Authentication Load |
Authorizations |
---|---|---|---|
1 |
25 |
88,000 |
22,000 |
10 |
50 |
88,000 |
440,000 |
15 |
25 |
88,000 |
330,000 |
Authorization Load |
792,000 |
The company uses the authorization load to estimate the sustained authorization rate.
Copyright © 2010 CA. All rights reserved. | Email CA about this topic |