ASP.NET PDF Viewer using C#, VB/NET

The statistics module provides you with a number of reports about the usage patterns of users, including Recent hits, Top referrers, Top pages, and Top visitors. The Recent hits report contains all access logs recorded by the module, such as page, user, and time. The remaining three reports provide you with an overview of the access logs. The search module provides you with a report of top search phrases. If you are serious about viewing and understanding usage trends, I recommend using the Google Analytics module, available at http://drupal.org/project/google_analytics. Google Analytics gives you a number of advanced analytical and reporting options not available with Drupal. You enable the statistics module at the Modules page, and you configure it at Configuration Statistics, as shown in Figure 11-5. You will need to select Enable access log from the configuration form for the module to work. I recommend adjusting the field discard access logs older than, depending on the amount of traffic to your site. On a heavily visited site, the access log will grow quickly; the statistics module adds one entry to the log every time a user visits a page. If your site has 100 visitors a day viewing an average of 10 pages per visitor, this adds 1,000 entries to the log every day; setting Discard access logs older than to the maximum setting (three months and three weeks) could easily

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We ve gone from a capacity of 16 to 32 to 64 characters. OK; can you guess what happens if we append another 30 characters (to push ourselves over the 64-character limit) as Example 10-68 does

builder1.Append('C', 30); Console.WriteLine(builder1.Capacity); Console.WriteLine(builder1.Length);

TreeView 96, 99 100 Twitter 233, 318

Yup, the last two lines of output now read:

128 66

result in a log with more than 100,000 entries. If this is a concern, I recommend speaking with your web host to find out whether it has a limit on the number of rows in a database table.

There is a geometric progression the capacity is doubling each time we exceed its previous capacity. It does this in an attempt to minimize the amount of allocation it has to do, but in order to prevent things from getting totally out of hand, overallocation will never grow the capacity by more than 8,000 characters (in the current version of the framework, at least). Of course, if you append a string that is longer than 8,000 characters, StringBuilder will have to allocate enough space, but it won t overallocate in that case.

UAC 362 UI 22 project 325, 338, 341, 343 344 testing tools 284 tests 293, 295, 297, 300 automating 284 unit test project 5 unit testing 59 65, 125, 191, 284 285, 300, 365, 371, 373, 375 376, 378 calling action methods directly 130 check only a single class 371 do not allow out-of-process calls 64 do not call out of process 59 frameworks 284 no shared global variables 65 substitute object provided 126 Unix 229 curl command 228 unnecessary information 231, 234 untestable 64 unzip 254 UpdatePanel 179 UpdateTargetId 187 188 uploadButton 73 UploadConnector 75 uploading 66, 70, 74, 77 UploadResult 72 73, 75 UploadStatus 75 76 URL 227 239, 241 245, 248, 250, 301, 303, 306 307, 310 311, 350 allow parameters to clash 233 designing schema 231 236 generation 307 308 make hackable 232 rewriting 84, 91 93, 230 schema 227 235, 238 239, 242 243, 250 take care when restructuring 116 taking control with routing 230 ugly and nonintuitive 86 Url 187

You may have noticed that in the preceding examples, the String Builder had to reallocate each time we called Append. How is that any better than just appending strings Well, it isn t, but that s only because we deliberately contrived the examples to show what happens when you exceed the capacity. You won t usually see such optimally bad behavior in practice, you ll see fewer allocations than appends.

If we know we re going to need a particular amount of space, we can manually ensure that the builder has appropriate capacity, as shown in Example 10-69.

Url.Action 27 UrlAuthorizationModule 250 UrlHelper 138 UrlRouteModule 349 UrlRoutingModule 248 250 URLs 301, 307 user input 22, 25 26, 28, 30, 32, 36, 51, 54 56 validation 215 user interface 40, 47 user interface layer 284 user sessions 101 UsersController 237 238

builder1.EnsureCapacity(32000); Console.WriteLine(builder1.Capacity); Console.WriteLine(builder1.Length);

The last two lines of output indicate that it has complied with our wishes:

Figure 11-5. Statistics module configuration options, accessed at Configuration Statistics Selecting Count content views enables a counter on every piece of content that displays the number of times a node has been viewed. Permission must be given to users to view the counter. Note that the statistics module adds one additional database call per page displayed, resulting in an increased load on the server. Disabling this module may help increase the performance of your site for users.

32000 66