Highly Scalable

MARCH 10, 2015

Retail is one of the most important business domains for data science and data mining applications because of its prolific data and numerous optimization problems such as optimal prices, discounts, recommendations, and stock levels that can be solved using data analysis methods. The rise of omni-channel retail that integrates marketing, customer relationship management, and inventory management across all online and offline channels has produced a plethora of correlated data which increases both

Retail 152

Retail C++ Analytics Metrics 152

All Things Distributed

NOVEMBER 5, 2015

Yesterday, AWS evangelist Jeff Barr wrote that AWS will be opening a region in South Korea in early 2016 that will be our 5th region in Asia Pacific. Customers can choose between 11 regions around the world today and, in addition to Korea, we are adding regions in India, a second region in China, and Ohio in 2016. Today, I am excited to add the United Kingdom to that list!

AWS 167

AWS Retail Entertainment IoT 167

DZone

AUGUST 7, 2015

Some form-based applications need to continuously monitor for text changes to perform the front-end form validations. This can be achieved by implementing the android.text.TextWatcher interface. The TextWatcher interface provides the following three callback methods, that are called while the text view is being updated.

Monitoring 130

Monitoring Performance 130

The Polyglot Developer

MARCH 22, 2015

I have a few popular Oauth related posts on my blog. I have one pertaining to Oauth 1.0a , and I have one on the topic of Oauth 2.0 for use in mobile application development. However, I get a lot of requests to show how to accomplish an Oauth 2.0 connection in a web browser using only JavaScript and AngularJS. We’re going to better explore the process flow behind Oauth 2.0 to establish a secure connection with a provider of our choice.

Mobile 72

Mobile Processing Development 72

Tim Kadlec

DECEMBER 3, 2015

A lot of folks have been very vocally pushing for “HTTPS Everywhere”, and for good reason. The fact that the lack of HTTPS makes you miss out on shiny new things like HTTP/2 and Service Workers adds even more incentive for those a little less inspired by the security arguments. Unfortunately, moving to HTTPS can be kind of painful as you can see from Jeremy Keith’s excellent post detailing exactly how he got adactio.com onto HTTPS.

Virtualization 75

Virtualization Servers Internet Internet 75

Nick Desaulniers

JULY 23, 2015

21st Century C by Ben Klemens. was a great read. It had a section with an intro to autotools, git, and gdb. There are a few other useful tools that came to mind that I’ve used when working with C and C++ codebases. These tools are a great way to start contributing to Open Source. C & C++ codebases; running these tools on the code or adding them to the codebases.

C++ 75

C++ Programming Open Source Code 75

Speed Curve

MARCH 23, 2015

I'm excited to announce that I've joined SpeedCurve! When SpeedCurve was just a twinkle in Mark's eye, he contacted me about the concept and I encouraged him that a commercial version of WebPageTest was needed. When I saw the early versions of SpeedCurve, I was blown away. Mark presents traditional performance data in a way that is more compelling, revealing his strong design background.

Design 75

Design Performance Metrics Speed 75

O'Reilly Software

AUGUST 13, 2015

I was recently lucky enough to get to attend my first SIGGRAPH conference this year. While I didn’t attend any talks, I did spend some time in the expo. Here is a collection of some of the neat things I saw at SIGGRAPH 2015. Sorry it’s not more collected; I didn’t have the intention of writing a blog post until after folks kept asking me “how was it?

52

52

Professor Beekums

DECEMBER 25, 2015

It’d be hard to be a software developer these days without hearing about “being agile” Agile is a popular software development process. It is intentionally loosely defined, though that naturally leads to many many different opinions about what it is. The spectrum varies from those who think there are some rules that absolutely must be followed in order to be considered agile to those who use it to justify a lack of process.

Software 49

Software Software Development Processing 49

The Agile Manager

NOVEMBER 30, 2015

[T]he aim of such systems is ultimately to produce themselves: their own organization and identity is their most important product. -- Gareth Morgan, Images of Organization , p. 236. In the early 1970s, biologists Humberto Maturana and Francisco Varela coined the term autopoiesis to define the self-maintaining nature of living cells: biological cells produce the components that maintain the structure that creates more components (in this case, more cells).

Systems 45

Systems Storage Programming Infrastructure 45

Dotcom-Montior

OCTOBER 26, 2015

You may think the answers are obvious, and the most obvious questions include: How many people are hitting our website? How many site visitors are converting? Is the blog drawing traffic? Which pages are receiving the most traffic? These are not necessarily the most important metrics about your website, and all of these questions can… The post 5 Things Your Boss Needs to Know About Your Website appeared first on Dotcom-Monitor Web Performance Blog.

Website 40

Website Traffic Metrics Monitoring 40

All Things Distributed

JUNE 25, 2015

Today, Amazon announced the Alexa Skills Kit (ASK) , a collection of self-service APIs and tools that make it fast and easy for developers to create new voice-driven capabilities for Alexa. With a few lines of code, developers can easily integrate existing web services with Alexa or, in just a few hours, they can build entirely new experiences designed around voice.

Lambda 166

Lambda Development AWS Innovation 166

Wayfair Tech

OCTOBER 27, 2015

There's a great interview with our own Matt DeGennaro by Paul Krill of Infoworld that came out a few days ago. The topic is Tungsten.js, our awesome framework that 'lights up' the DOM with fast, virtual-DOM-based updates, React-style, and can be integrated with Backbone.js and pretty much whatever other framework. Read more.

Virtualization 40

Virtualization Open Source Performance 40

The Polyglot Developer

MAY 21, 2015

Have you ever wanted to highlight text in a string on a web page using AngularJS? If your answer was no, don’t disregard, because you may one day need to. The good thing is this is not very hard to accomplish. There are many ways to do this using JavaScript, but we’re only going to examine one of those methods. Using AngularJS and a few regular expressions (RegEx) with JavaScript, you can find text in a string and then apply your own customizations.

Development 72

Development 72

Tim Kadlec

OCTOBER 8, 2015

Incentives are fascinating. Dangle the right carrot in front of people and you can subtly influence their behavior. But it has to be the right carrot. It has to matter to the people you’re trying to influence. Just as importantly, it has to influence the correct changes. A few years ago there was a story of incentives gone wrong that was making the rounds.

Cache 75

Cache Google Mobile Open Source 75

Nick Desaulniers

MAY 25, 2015

Interpreters and compilers are interesting programs, themselves used to run or translate other programs, respectively. Those other programs that might be interpreted might be languages like JavaScript, Ruby, Python, PHP, and Perl. The other programs that might be compiled are C, C++, and to some extent Java and C#. Taking the time to do translation to native machine code ahead of time can result in better performance at runtime, but an interpreter can get to work right away without spending any

C++ 73

C++ Programming Code Architecture 73

Speed Curve

NOVEMBER 11, 2015

If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). Page load time was pretty good at approximating the user experience in the days of Web 1.0 when pages were simpler and each user action loaded a new web page (multi-page websites).

Metrics 72

Metrics Website Innovation Speed 72

Alex Russell

AUGUST 20, 2015

Cross-posted at Medium. This post is about vendor prefixes, why they didn’t work, and why it’s toxic not to be able to launch experimental features. Also, what to do about it. Vendor prefixes are a very sore topic , and one where I’ve disagreed with the overwhelming consensus. In the heat of the ‘11–12 debate (“prefixpocalypse”) I tried to outline a hierarchy of the web platform needs: Meeting developer & user experience needs with new features.

Programming 54

Programming Google Infrastructure Engineering 54

O'Reilly Software

MAY 24, 2015

Interpreters and compilers are interesting programs, themselves used to run or translate other programs, respectively. Those other programs that might be interpreted might be languages like JavaScript, Ruby, Python, PHP, and Perl. The other programs that might be compiled are C, C++, and to some extent Java and C#. Taking the time to do translation to native machine code ahead of time can result in better performance at runtime, but an interpreter can get to work right away without spending any

C++ 52

C++ Java Programming Code 52

Professor Beekums

NOVEMBER 29, 2015

Someone recently asked me for advice for switching careers to be a front end developer. I knew very little about the person other than their college degree was unrelated to the field, they were trying out Free Code Camp, and that they wanted to be a front end developer.

Development 40

Development Code 40

The Agile Manager

DECEMBER 31, 2015

Earlier this year, my house should have burned to the ground. A CR2032 battery exploded and caught fire in a confined place dense with flammable objects. But my house didn't burn down: at the moment the battery exploded, I was sitting a few feet away from it. I heard a loud bang, investigated, and stamped out the fire within a few seconds. I wasn't planning to be there at the time.

Government 40

Government Google Strategy Processing 40

Dean Hume

JULY 22, 2015

Earlier this year I was lucky enough to get the chance to present at UpFront Conference in Manchester. This was the inaugural year for the conference, and it was great to be apart of this event. A few people have asked about the slide deck and wanted to know more. I thought I'd add the link here along with some pictures and the video from the event.

Website 40

Website Mobile Speed Network 40

All Things Distributed

APRIL 3, 2015

'Machine learning is a scientific discipline that explores the construction and study of algorithms that can learn from data. Such algorithms operate by building a model from example inputs and using that to make predictions or decisions, rather than following strictly static program instructions. Machine Learning is playing an increasing important role in many areas of our businesses and our lives.

Artificial Intelligence 145

Artificial Intelligence Games Programming Analytics 145

Wayfair Tech

OCTOBER 26, 2015

For the past couple years, Wayfair's front-end stack has relied heavily on Mustache templates. They've let our growing front-end team focus on the front-end. They allow us to share more code between server and client as we push towards a Tungsten-powered future. Anyone who's seen a Mustache template knows that. Read more.

Servers 40

Servers Code Open Source Performance 40

The Polyglot Developer

NOVEMBER 9, 2015

I was at an event not too long ago where someone recommended I take a look at PassportJS for my Node.js applications. In case you’re unfamiliar with PassportJS, it is an authentication middleware that makes it easy to work with logins, whether they are with basic login, or with social media accounts such as Facebook and Twitter. Being that I’m into different authentication techniques, as seen in my other oauth articles , I figured it wouldn’t be a bad idea to do a walkthrough on PassportJS with

Social Media 60

Social Media Media Development 60

Tim Kadlec

JULY 28, 2015

I did a bunch of research on proxy-browsers for a few projects I worked on. Rather than sitting on it all, I figured I’d write a series of posts sharing what I learned in case it’s helpful to anyone else. This first post looks at the general architecture of proxy browsers with a performance focus. In the original story of the Wizard of Oz, the Emerald City isn’t actually green nor made entirely of emeralds.

Architecture 75

Architecture Servers Network Latency 75

Nick Desaulniers

FEBRUARY 22, 2015

How is it possible for us to communicate securely when there’s the possibility of a third party eavesdropping on us? How can we communicate private secrets through public channels? How do such techniques enable us to bank online and carry out other sensitive transactions on the Internet while trusting numerous relays? In this post, I hope to explain public key cryptography, with actual code examples, so that the concepts are a little more concrete.

C++ 71

C++ Servers Education Government 71

Speed Curve

NOVEMBER 22, 2015

At SpeedCurve, we focus on metrics that capture the user experience. A big part of the user experience is when content actually appears in front of the user. Since stylesheets and synchronous scripts are the culprits when it comes to blocking rendering, we've rolled out some new metrics that focus on these critical blocking resources. The most helpful innovation we made is to highlight the critical blocking stylesheets and synchronous scripts in our waterfall charts.

Metrics 61

Metrics Innovation Performance 61

Alex Russell

JULY 2, 2015

There’s a post on the fetch() API by Ludovico Fischer doing the rounds. As a co-instigator for adding the API to the platform , it’s always a curious thing to read commentary about an API you designed, but this one more than most. It brings together the epic slog that was the Promises design (which we also waded into in order to get Service Workers done and which will improve with await/async ) with the in-process improvements that will come from Streams and it mixes it with a dollop

Design 40

Design Availability Processing Technology 40

O'Reilly Software

FEBRUARY 21, 2015

How is it possible for us to communicate securely when there’s the possibility of a third party eavesdropping on us? How can we communicate private secrets through public channels? How do such techniques enable us to bank online and carry out other sensitive transactions on the Internet while trusting numerous relays? In this post, I hope to explain public key cryptography, with actual code examples, so that the concepts are a little more concrete.

Internet 52

Internet Internet Code 52

Dotcom-Montior

FEBRUARY 24, 2015

The EveryStep Scripting Tool by Dotcom-Monitor is a powerful macro that records scripts to perform automated monitoring of your websites' performance. There are many advanced features in the EveryStep Scripting Tool to help customize the script to trigger notifications based upon specific needs, such as recording the time between actions. The Script Watcher is an advanced feature available when editing a script that you have already recorded.

Website Performance 40

Website Performance Website Monitoring Availability 40

The Agile Manager

OCTOBER 31, 2015

When a management with a reputation for brilliance tackles a business with a reputation for bad economics, it is the reputation of the business that remains intact. -- Warren Buffett For a business to have "potential", it needs opportunity, money, willingness, talent, and aptitude. Yes, a business without all of these things still has potential: it might be poorly funded but have knowledge-acquisitive people and a clear opportunity; it may have weak capability but good cash flow.

Innovation 40

Innovation Efficiency Engineering Technology 40

Dean Hume

JULY 22, 2015

Earlier this year I was lucky enough to get the chance to present at UpFront Conference in Manchester. This was the inaugural year for the conference, and it was great to be apart of this event. A few people have asked about the slide deck and wanted to know more. I thought I'd add the link here along with some pictures and the video from the event.

Website 40

Website Mobile Speed Network 40

All Things Distributed

MAY 29, 2015

As we know the run time of most algorithms increases when the input set increases in size. There is one noticeable exception: there is a class of distributed algorithms, dubbed local algorithms, that run in constant time, independently of the size of the network. Being highly scalable and fault tolerant, such algorithms are ideal in the operation of large-scale distributed systems.

Scalability 140

Scalability Network Systems 140

Wayfair Tech

AUGUST 11, 2015

When you write your first web application, chances are you’re going to query a database. When you write it in PHP, chances are it’ll look like this: $mysqli = new mysqli("example.com", "user", "password", "database"); $result = $mysqli->query("SELECT * FROM product"); $row = $result->fetch_assoc(); Before long, you have to start handling user input, which means escaping: $mysqli = new mysqli("example.com", "user", "password", "database"); Read more.

Database 40

Database Performance 40

The Polyglot Developer

DECEMBER 28, 2015

Bluehost is a great service that is incredibly cheap, but depending on the amount of traffic that you receive, a Bluehost server may not be able to accommodate in performance. For example my WordPress blog, the one you’re on now, receives too much traffic, which is why I had to host it on a VPS service. In particular I’m hosting this WordPress blog on Digital Ocean.

Traffic 52

Traffic Virtualization Servers Performance 52

Tim Kadlec

FEBRUARY 18, 2015

I remember going as a kid with my parents when they would pick out a new car. My parents didn’t want to spend a ton so we usually looked for something basic that would work. The car, of course, had to have certain features. A way to steer. Brakes. An engine. Doors. These were things all cars had and all cars had to have if anyone was going to ever consider purchasing them.

Engineering 72

Engineering 72