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  Think Big – Now Think Even Bigger
  Join Us at Internet of Things at Cloud Expo, November 11-13,
at the Javits Center!


The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago.

All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades.

With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend Internet of Things at Cloud Expo in New York City. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be!

Delegates to Internet of Things at Cloud Expo will be able to attend eight separate, information-packed tracks:

  • Enterprise Cloud
  • Digital Transformation
  • The API Enterprise | Mobility & Security
  • DevOps | Containers & Microservices
  • Cognitive Computing | AI, ML, DL
  • Big Data | Analytics
  • IoT | IIoT | Smart Cities
  • Hot Topics | FinTech | WebRTC

There are 120 breakout sessions in all, with Keynotes, General Sessions, and Power Panels adding to three days of incredibly rich presentations and content.


We'll see you in New York!



Day 3 Keynote at @ThingsExpo | Chris Matthieu, CTO of Octoblu
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu's platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
  Themes & Topics to Be Discussed

Consumer IoT
• Wearables
• Smart Appliances
• Smart Cars
• Smartphones 2.0
• Automation
• Smart Travel
• Personal Fitness
• Health Care
• Personalized Marketing
• Customized Shopping
• Personal Finance
• The Digital Divide
• Mobile Cash & Markets
• Games & The IoT
• The Future of Education
• Virtual Reality

Enterprise IoT
• The Business Case for
x IoT
• Smart Grids
• Smart Cities
• Smart Transportation
• The Smart Home
• M2M
• Authentication/Security
• Wiring the IoT
• The Internet of
x Everything
• Digital Transformation
x of Enterprise IT
• Agriculture
• Transportation
• Manufacturing
• Local & State
x Government
• Federal Government

IoT Developers | WebRTC Summit
• Eclipse Foundation
• Cloud Foundry
• Linux Containers
• Node-Red
• Open Source Hardware
• Ajax and the IoT
• Leveraging SOA
• Multi-Cloud IoT
• Evolving Standards
• WebSockets
• Security & Privacy
x Protocols
• GPS & Proximity
x Services
• Bluetooth/RFID/etc
• XMPP
• Nest Labs



The Top Keynotes, the Best Sessions, a Rock Star Faculty and the Most Qualified Delegates of ANY Internet of Things Event!


The future of computing lies in these things. As computing takes a much more active role in our lives it will at the same time become much more invisible. Internet of Things Expo will address the challenges in getting from where we are today to this future.
 
The high-energy event is a must-attend for senior technologists from CEOs on down – including CIOs, CTOs, directors of infrastructure, VPs of technology, IT directors and managers, network and storage managers, network engineers, enterprise architects, and communications and networking specialists.




@ThingsExpo Power Panel | The World's Many IoTs: Which Are the Most Important?
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, panelists discussed what things are the most important, which will have the most profound effect on the world, and what should we expect to see over the next couple of years.
Benefits of Attending the Three-Day Technical Program
  LEARNexactly why Internet of Things is relevant today from an economic, business and technology standpoint.
  HEAR first-hand from industry experts the common issues and requirements for creating a platform for the Internet of Things.
  SEE what new tools and approaches the Internet of Things requires.
  DISCOVER how to drive a distributed approach to the Internet of Things, where applications move to the data.
  FIND OUThow the vast volumes of new data produced by the Internet of Things provides a valuable new source of business insight through advanced analytical techniques.
  MASTER how the ongoing development of smart cities, cars, and houses will enhance connectivity infrastructure.
Lunch Power Panel | Microservices & IoT- Moderated by Jason Bloomberg
In this Power Panel at @DevOpsSummit, moderated by Jason Bloomberg, president of Intellyx, panelists Roberto Medrano, Executive Vice President at Akana; Lori MacVittie, Evangelist for F5 Networks; and Troy Topnik, ActiveState's Technical Product Manager; and Otis Gospodnetic, founder of Sematext; peeled away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud environment, and we must architect and code accordingly. At the very least, you'll have no problem filling in your buzzword bingo cards.


Which Is Faster?
Which Is Faster?

Which is faster, <CFQUERY> or <CFLOOP>? Which is faster, CFML or <CFSCRIPT>? Which is faster... ? If you're a ColdFusion developer, chances are that you've asked (or have been asked) these questions and others like them.

So, Which Is Faster?
Okay, so which option is actually the faster one? Honestly? I'm not so sure. Once upon a time (pre-CF4) we were told that <CFLOOP> was very slow. Then (when CF4 shipped) we were told that <CFLOOP> had been optimized and outperformed <CFOUTPUT>. And now, well, CFMX changes everything. So, which is faster?

Of course, performance-related questions are legitimate. We all keep looking for ways to tweak just a little more oomph from our code. But the truth is that this is not just a CFML syntax concern; this affects all sorts of code, database calls, design considerations, reuse implementations, and more.

ColdFusion debugging helps us out a little here. Execution time (for a complete page or parts thereof) provides an invaluable peek under the CF covers. But for more granular performance comparisons, for detailed benchmarking, and for ascertaining definitive performance data, debug output falls a bit short.

Enter ColdFusion MX
Ever since ColdFusion MX shipped I've been trying to better understand exactly what the product is doing internally so as to be able to write better code. And like many of you, I've discovered that an interesting side effect of ColdFusion's new processing engine is that many of the tips and tricks I lived by don't really apply anymore; some have negligible effects on my code, and others are just plain wrong. So I created an application, a really simple performance comparison tool, using good old ColdFusion. This tool has proven so invaluable that I feel compelled to share it with you. Read on.

Measuring Execution Time
The key to measuring any execution time in ColdFusion is an intriguing little function named GetTickCount(). GetTickCount() takes no parameters, and returns a number that is, in and of itself, rather useless. So what makes GetTickCount() so intriguing? The number that GetTickCount() returns is a value in milliseconds, and invoking GetTickCount() exactly one second after a prior GetTickCount() invocation returns a value exactly 1000 times greater than the first returned value.

In other words, to determine exactly how long a line of code takes to execute, you could do the following:

<CFSET start=GetTickCount()>
... some CFML code ...
<CFSET end=GetTickCount()>
<CFSET executiontime=end-start>

Measuring a single execution yields no usable data - a single invocation may run faster or slower at any time based on lots of other factors (ColdFusion factors and otherwise). To really measure execution time, code must be executed repeatedly, and each iteration must be measured individually and stored. Then an average execution time can be determined by processing all of the saved values.

The simplest way to do this in ColdFusion is to loop through the iterations, saving each measurement to an array, perhaps like this:

<CFSET start=GetTickCount()>
...some CFML code...
<CFSET end=GetTickCount()>
<CFSET ArrayAppend(timings, end-start)>

Then to obtain the average execution time you could simply use:

#ArrayAvg(timings)#

Similarly, total execution time, slowest iteration, and fastest iteration could easily be determined using array functions like this:

Total: #ArraySum(timings)#
Slowest: #ArrayMax(timings)#
Fastest: #ArrayMin(timings)#

To compare the processing of two options you'd simply repeat this process twice (saving the data to two arrays, one for each option), and then compare the results.

Presenting Results
Detailed benchmarking data is useless unless it can be presented in a format that makes it clear and understandable. <CFCHART> (and related tags) makes it easy to plot the data in a highly usable and readable format.

<CFCHART> is usually used to chart database query results, but as this code snippet demonstrates, individual data points can be passed explicitly using the <CFCHARTDATA> tag. In this example, two arrays (named timings1 and timings2) are being charted in individual data series in a single chart. The inner loops loop from 1-100, and on each iteration, passes the appropriate array value (from both arrays) to <CFCHART>.

<!--- Graph it --->
<CFCHART FORMAT="flash"
SHOWMARKERS="no">
<CFCHARTSERIES TYPE="line"
SERIESLABEL="Option 1 Title"
SERIESCOLOR="red">
<CFLOOP FROM="1" TO="100" INDEX="i">
<CFCHARTDATA ITEM="#i#"
VALUE="#timings1[i]#">
</CFLOOP>
</CFCHARTSERIES>
<CFCHARTSERIES TYPE="line"
SERIESLABEL="Option 2 Title"
SERIESCOLOR="green">
<CFLOOP FROM="1" TO="100" INDEX="i">
<CFCHARTDATA ITEM="#i#"
VALUE="#timings2[i]#">
</CFLOOP>
</CFCHARTSERIES>
</CFCHART>
Putting It All Together
Over the past few months I've found myself using code much like what I described above over and over. So to make testing quicker and cleaner, I created the "Which is Faster?" application. The app is actually incredibly simple; the idea is as follows:
  • The two coding options (perhaps <CFLOOP QUERY=""> and <CFOUTPUT QUERY="">) are each placed in their own .cfm files. (I named mine loop.cfm and output.cfm).
  • Some tests may require the execution of code that is not part of the actual test (for example, to test <CFLOOP> and <CFOUTPUT> you'd need a query to be executed, but you'd not want it to be executed along with the <CFLOOP> and <CFOUTPUT> tags), so that code is placed in its own .cfm file. (I named mine query.cfm.)
  • A form prompts for the names of these files, descriptions, as well as the number of iterations to use when testing.
  • The form submits to a processing page that first includes the preprocessor page (if one was specified) and then loops as instructed, including each test file and saving the execution times to arrays, which are then used by <CFCHART> tags to chart the performance.

    For my own testing (to test <CFLOOP> versus <CFOUTPUT>) I used three files. Here they are:

    QUERY.CFM
    <CFQUERY DATASOURCE="exampleapps"
    NAME="emps">
    SELECT *
    FROM tblEmployees
    ORDER BY LastName, FirstName
    </CFQUERY>

    OUTPUT.CFM
    <CFOUTPUT QUERY="emps">
    </CFOUTPUT>

    LOOP.CFM
    <CFLOOP QUERY="emps">
    </CFLOOP>

    These are simple, crude, and not real-world at all. But they are perfect for this type of testing - you wouldn't want lots of other processing included, as that could skew the results.

    FORM.CFM (Listing 1) contains the code for the form, a simple HTML form as described above (see Figure 1). One checkbox worth noting is the "Exclude first iteration" option; as ColdFusion may have to compile the code on the first execution, you may not want to include that in the collected data (as it will skew the results, creating a much slower first value).

    PROCESS.CFM (Listing 2) processes the form. The code first uses <CFPARAM> and a series of <CFIF> statements to validate and prepare passed values. If a preprocessor file was specified, it is then executed. Next, if the "Exclude first iteration" option was checked, each included file is executed once (using <CFINCLUDE> tags) so as to force a compile if needed. Then comes the test itself; <CFLOOP> loops from 1 to the specified number of iterations and, within each iteration, both files are executed and the timings for each appended to one of two arrays (one for each test). Finally the results are displayed in five graphs (see Figure 2). The first shows the execution details, and the next four show total processing time, average iteration processing time, as well as fastest and slowest iteration processing time. (In case you were wondering why I used two arrays instead of a single two-dimensional array, these last four graphs are the reason; functions like ArraySum() and ArrayAvg() work on single dimensional arrays only).

    Where to Go from Here
    Of course, writing all this down has gotten me thinking. It would be nice if instead of just including files with <CFINCLUDE> the application would give you a choice and also allow:

    • <CFHTTP> calls to complete pages, local or remote
    • <CFINVOKE> calls to Web services or ColdFusion Components
    • <CFMODULE> calls to Custom Tags
    It's tempting to modify the app right now, but so as to get this column in, I'll leave this enhancement for you to work on. If you find the application useful and enhance it, please let me know.

    Conclusion
    So, which is faster, <CFLOOP> or <CFOUTPUT>? Answer: <CFLOOP> seems slightly faster, but there is so little difference it's essentially insignificant. Which is faster, CFML or <CFSCRIPT>? Answer: almost no difference (unless I ran ridiculously large tests, as in 10,000 assignments per iteration). Which is faster? Now you can find out yourself - and not just with CFML language elements, but whole blocks of functionality, pages, SQL statements, and more. Enjoy!

    About Ben Forta
    Ben Forta is Adobe's Senior Technical Evangelist. In that capacity he spends a considerable amount of time talking and writing about Adobe products (with an emphasis on ColdFusion and Flex), and providing feedback to help shape the future direction of the products. By the way, if you are not yet a ColdFusion user, you should be. It is an incredible product, and is truly deserving of all the praise it has been receiving. In a prior life he was a ColdFusion customer (he wrote one of the first large high visibility web sites using the product) and was so impressed he ended up working for the company that created it (Allaire). Ben is also the author of books on ColdFusion, SQL, Windows 2000, JSP, WAP, Regular Expressions, and more. Before joining Adobe (well, Allaire actually, and then Macromedia and Allaire merged, and then Adobe bought Macromedia) he helped found a company called Car.com which provides automotive services (buy a car, sell a car, etc) over the Web. Car.com (including Stoneage) is one of the largest automotive web sites out there, was written entirely in ColdFusion, and is now owned by Auto-By-Tel.

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    Reader Feedback: Page 1 of 1

    I would like to capture the execution time of each page as it displayed in the browser. GetTickCount() function gives a slightly different result. Can you pls tell me how. Thanks a lot


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    This week I had the pleasure of delivering the opening keynote at Cloud Expo New York. It was amazing to be back in the great city of New York with thousands of cloud enthusiasts eager to learn about the next step on their journey to embracing a cloud-first worldl."
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