New PDF release: Advanced ColdFusion 4.0 application development

By Ben; et al. Forta

ISBN-10: 0789718103

ISBN-13: 9780789718105

Written via probably the most revered ColdFusion builders round, this booklet is the single resource for complicated the knowledge wanted through critical ColdFusion builders. From defense concerns and strategies to scripting the advance setting, from fault-tolerance and load-balancing to allotted processing, from server sandbox deployment to clever brokers, from writing language extensions to COM DCOM and CORBA integration, this publication encompasses a wealth of hard-earned wisdom won by way of years of real-world adventure. -Programmers, HTML builders, site owners, community administrates, and database directors alike will enjoy the strategies, applied sciences, and ideas taught during this publication. -This ebook is layout for use along with (and as an extension to) our best-selling "ColdFusion four internet software building Kit", ISBN 078971809X.

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Additional resources for Advanced ColdFusion 4.0 application development

Example text

280 WDDX and ColdFusion 281 The CFWDDX Tag 281 Exchanging WDDX Packets via Special Web Pages 292 WDDX and JavaScript 308 Passing ColdFusion Variables to JavaScript 309 Building an Offline Data-Browsing App 313 Getting Data from JavaScript Back to ColdFusion 321 More About JavaScript and WDDX 330 17 Advanced WDDX Integration 355 Allaires WDDX Interface for COM 356 Installation of Allaires COM Object 356 WDDX Classes and Functions Provided by the COM Object 357 Integrating with Active Server Pages 364 Creating the Store Robot Back-End Page 364 Interacting with ColdFusion and JavaScript at Once 374 Integrating with Visual Basic 379 Creating the A2Z Client Application 379 Adding Visual Basic Code to Bring the Application to Life 381 Integrating with Office Applications 396 Creating the GetBookInfo Macro 397 The Macro Code Explained 401 Page xi Fetching WDDX Packets Directly with JavaScript 402 Integrating with Perl 411 Getting Started 411 Serializing Data 412 Re-creating the Store Robot Using Perl 413 Using Perl to Output JavaScript On-the-Fly 416 18 ColdFusion Scripting 421 Introducing CFScript 422 CFScript Features 422 CFScript Limitations 423 Simple Scripting 424 The CFSCRIPT Tag 425 Assigning Values to Variables 425 Commenting Your Code 428 Program-Flow Statements 429 Making Simple Decisions: if Statements 430 Making Either/Or Decisions with if.

If your CFML is complex, or if youre using all the other capabilities that make ColdFusion greatdatabase calls, CFX tags, COM and CORBA objects, even additional HTTP requests with CFHTTPa single ColdFusion page can become extremely resource-intensive. When traffic is low, your site might receive only one request for a resource-intensive ColdFusion page at a time. If your server can devote its full attention to that one request, the response to the request is usually pretty fast, even if a lot of resources were consumed in generating the response.

1 does. LOG file. LOG file records every ColdFusion error on your site. Two types of errors are clear signs of a performance problem. The first performance-problem error is a Request timed out message. This error is written if a ColdFusion page takes longer to process than the timeout value you set in the ColdFusion Administrator. If your server is experiencing performance problems, some pages take so long to process that they trigger this error. Its a pretty crude filter; if you set your timeout value to 20 seconds, you have no way to know if the pages that arent timing out are taking 5 seconds or 15 seconds to process.

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Advanced ColdFusion 4.0 application development by Ben; et al. Forta


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