CakeDC Blog

TIPS, INSIGHTS AND THE LATEST FROM THE EXPERTS BEHIND CAKEPHP

Benchmarking requestAction

Now there has been a lot of discussion in the past few months about requestAction() and how it can very easily create a negative impact on your application. In fact I even wrote such an article myself. However, its high time that someone did the number crunching to really see if requestAction() is actually as slow as we all seem to think it is. So onto the testing method and the results.

Testing method

To test this theory I used a small CakePHP application and the SVN head (revision 8064) of CakePHP. I used a simple sample application with 2 controllers and 2 models. My model method directly returned the results without touching the database, so that database retrieval time and model processing would not be a factor in these tests. As I was only interested in the performance implications inherent in requestAction() itself, I wanted to remove the variance created by connecting to a database. I set debug = 0, and used basic file caching. After warming up the cake core caches, I tested 4 different controller actions.

  • Using Relations / ClassRegistry::init() - The method I originally proposed, and often touted as the 'best' solution to requestAction()
  • Using RequestAction with a string URL
  • Using RequestAction with and Array URL
  • Using a cached RequestAction - This more accurately simulates how we use requestAction at CakeDC.

Benchmarks were generated with Siege I used 10 concurrent users with 110 reps each. My local development web-server is running Apache 2.2/PHP 5.2.6 o n a 2.6GHz Core 2 Duo iMac with 2GB of ram. I ran each test 3 times and took the best result of each.

Using model relations / ClassRegistry::init()

First up was my originally proposed solution of using model relations to access the correct information. I used the following command and got the following results.

siege -b http://localhost/benchmark/posts/using_relations

Transactions:		        1100 hits
Availability:		      100.00 %
Elapsed time:		       63.21 secs
Data transferred:	        1.50 MB
Response time:		        0.55 secs
Transaction rate:	       17.40 trans/sec
Throughput:		        0.02 MB/sec
Concurrency:		        9.60
Successful transactions:        1100
Failed transactions:	           0
Longest transaction:	        1.76
Shortest transaction:	        0.10


Using RequestAction with a string URL

Up next was using request action with a string url. String URL's are often the slower way to perform a requestAction as parsing the URL string is one of the more expensive operations in request dispatching. I used the following command and the best results were.

siege -b http://localhost/benchmark/posts/using_requestaction

Transactions:		        1100 hits
Availability:		      100.00 %
Elapsed time:		       64.60 secs
Data transferred:	        1.51 MB
Response time:		        0.57 secs
Transaction rate:	       17.03 trans/sec
Throughput:		        0.02 MB/sec
Concurrency:		        9.72
Successful transactions:        1100
Failed transactions:	           0
Longest transaction:	        1.76
Shortest transaction:	        0.11


RequestAction with an Array URL

Up next is requestAction() witn an array url. Using an array URL is supposed to expedite the dispatching process as it bypasses much of the parameter parsing done by Router. This theory turned out to be true, as Array URL's clocked in marginally faster than their string counterparts.

siege -b http://localhost/benchmark/posts/using_requestaction_array

Transactions:		        1100 hits
Availability:		      100.00 %
Elapsed time:		       64.08 secs
Data transferred:	        1.53 MB
Response time:		        0.57 secs
Transaction rate:	       17.17 trans/sec
Throughput:		        0.02 MB/sec
Concurrency:		        9.78
Successful transactions:        1100
Failed transactions:	           0
Longest transaction:	        1.66
Shortest transaction:	        0.11

RequestAction using Array URL's and Caching

In my mind this was going to be the most performant requestAction option, due to the cached nature. The results were as expected with this method clocking to be only slightly behind the relation call. It is important to note as well, that this test does not reflect the time savings earned from not having to make an additional query/ round of result parsing. In a real world situation, the savings of using a cached element would be magnified by the cost of the query.

siege -b http://localhost/benchmark/posts/using_cached_requestaction

Transactions:		        1100 hits
Availability:		      100.00 %
Elapsed time:		       63.60 secs
Data transferred:	        1.52 MB
Response time:		        0.56 secs
Transaction rate:	       17.30 trans/sec
Throughput:		        0.02 MB/sec
Concurrency:		        9.62
Successful transactions:        1100
Failed transactions:	           0
Longest transaction:	        1.77
Shortest transaction:	        0.09

Results Summary

In case you quickly scanned through the full results here is a summary of what happened.

Method Requests per second (mean) Total time taken (seconds)
Using relations/ClassRegistry::init() 17.40 63.21
Using requestAction and string urls 17.03 64.60
Using requestAction and array urls 17.17 64.08
Using cached requestaction 17.30 63.60

In closing requestAction() can be slower than a direct method call. There are some benefits to using requestAction though.

  • You have the opportunity to reduce the number of repeated lines of code by putting the requestAction inside the element. In doing so, you create an encapsulated element, that can be included anywhere without having to worry about having the correct method calls in your controller.
  • You can more easily cache the element. By using requestAction in conjunction with element caching you have an easy to use, simple to implement caching. Getting the same results with model method calls in your controller requires additional caching logic in your models.
  • The potential for increased performance. As we saw in the benchmarks above, a cached element performed almost as fast as the direct method call. This margin will grow when a database query is added into the mix.

Now am I retracting my previous stance on requestAction? No, I still feel that there are many situations where requestAction is the incorrect solution and signals poor application design. However, when the need arises it is good to know that requestAction can be as fast or faster than other approaches when implemented properly.

 

Latest articles

Simplicity is important - here’s why

When it comes to web design, simplicity is not valued enough. Simplicity is important - but why? Simplicity reduces navigation confusion, makes the website look more sophisticated and can help in increasing site conversions (sign ups, contacts). All too often, web designers tend to miss the point of simplicity and over do the amount of information given on a single page - the need to get everything across at once can seriously hinder how much a website visitor is able take in. Over complicated pages can lead to higher than average bounce rates or lower on-page conversions. We thought we’d share with you some top tips to simplify your website.

  • Keep things along the 80-20 rule
    • Use the Pareto principle which is that 80% of the effects come from 20% of the causes. This means taking away as much as you can from your design that will not lead to any type of conversion. Take things back to the bare essentials and make those work properly
  • Embrace few colors in your theme
    • Does a monochrome color scheme work for you? If not, try out as few colors as possible. Work towards a design that requires less effort for your website visitor to process. Fewer colors will also give your site a sleek, classic look
  • Keep copy short and sweet
    • Embrace compelling copy but keep things shorter and to the point. Make your point quickly and keep things easy-to-read by sticking to a few key points. Use shorter sentences, and keep paragraphs to a maximum of 3-4 sentences for easy reading.
  • Fix your navigation
    • Often many sites have over complicated and lengthy navigation options. Remember to include navigation to your list of things to simplify today. Keep important and key pages in your navigation bar. Remove excess clutter and keep all navigation menus visible. Other key things to keep in mind is the use of universal icons as well as ensuring a sitemap in your footer - these are all standard items that visitors look for.

How Much Does it Cost to Design a Site?

If you are in the market for a website or application, it can sometimes be daunting. Being unsure of where to start, which development firm to use or how much the whole process is going to cost you can be truly overwhelming. And then there are those horror stories of others, who selected a developer based solely on cost (the cheapest quote perhaps) and ended up majorly down the hole with their budgets, while owning a unfinished website. Whether you are in the market for a website application with a specific outline and goal, or have a rough idea of what you need your application to do, how do you go about finding the best selection for you? And then how do you know that whoever you select is going to deliver what you want and in the time frame that you need it? And then, not knowing how to code yourself, you can land up frustrated at not understanding the process - especially if your development team gives you the runaround. At CakeDC, we are committed to a transparent workflow - we've created our own git workflow (MIT license) and we've used it successfully with our clients for 3+ years and dozens of projects. We use it to accelerate growth and innovation providing the highest quality application development. What sets CakeDC apart from others is that our experts listen closely to your needs. Second, we formulate a roadmap of milestones based on your specifications. Third, we offer guidance while delivering the highest quality results in a fraction of other developer’s time, by doing things The Right Way™ So how much is it going to cost you? Well this is of course dependent on what you project scope includes, however, we will work with you in determining the best package to suit your requirements. You can check out all of our rates and packages here. Ready to get your project started? Reach out to our experts today to see how easy it can be to get your application up and running.

What your website users are trying to tell you

Every visitor to your website has a goal in mind - this may not be a conscious goal, but they are visiting your site for a reason. So listening to your users feedback is key to meeting their expectations! As a business owner, be sure to keep these in consideration and as a developer, be sure to pass these recommendations through to your clients. What are some things that users are trying to tell you and how do you find out? What and why is it Often people forget about the basics and fail to include what their product, service or business is. By excluding this vital information there will be users who will not know what the purpose of the page that they have stumbled upon is, but what to do next - and therefor bounce quickly off of your site. Where is your pricing information? If you are trying to sell something - a product or a service - be sure to include the price information as this is used by your visitor to determine their next action. Even if you are providing resources in return for their details, it is important to be clear. Where are those testimonials or reviews? Have others tried it People like to know that whatever they are investing money into is worth it - reviews or customer testimonials help to show your visitors what you can do. Be sure to add this information in a way that is easy for you visitors to find. Where can I sign up or contact you Another vital piece of information that many often forget is to let your visitors know how to signup and contact you. Perhaps you have chosen to hide your contact information due to spam bots or other issues faced, however, if you are in the business of recruiting clients, then be sure to have some form of contact information easily available to your visitors.
Not sure if you are missing anything? CakeDC, the experts behind CakePHP, offer a range of services including consulting, guiding you through the best practices with your CakePHP application.

We Bake with CakePHP