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In just three short years, Amazon DynamoDB has emerged as the backbone for many powerful Internet applications such as AdRoll , Druva , DeviceScape , and Battlecamp. Many happy developers are using DynamoDB to handle trillions of requests every day. I am excited to share with you that today we are expanding DynamoDB with streams, cross-region replication, and database triggers.
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
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.
Like many startups, Uber began its journey with a monolithic architecture, built for a single offering in a single city. At the time, all of Uber was our UberBLACK option and our “world” was San Francisco. Having one codebase seemed … The post Service-Oriented Architecture: Scaling the Uber Engineering Codebase As We Grow appeared first on Uber Engineering Blog.
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.
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.
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.
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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.
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.
It happens on the web from time to time that powerful technologies come to exist without the benefit of marketing departments or slick packaging. They linger and grow at the peripheries, becoming old-hat to a tiny group while remaining nearly invisible to everyone else. Until someone names them. This may be the inevitable consequence of a standards-based process and unsynchronized browser releases.
DevOps is a cultural shift with immediate focus on maximising the business value by opting better communication, collaboration and feedback within and across IT development and operation teams. Infrastructure as Code (IaC) is a key element of DevOps philosophy with benefits for both development and operation teams. The term infrastructure as code is sometimes also referred to as programmable infrastructure.
In my last post about Amazon EC2 Container Service (Amazon ECS), I discussed the two key components of running modern distributed applications on a cluster: reliable state management and flexible scheduling. Amazon ECS makes building and running containerized applications simple, but how that happens is what makes Amazon ECS interesting. Today, I want to explore the Amazon ECS architecture and what this architecture enables.
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?
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.
[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).
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.
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
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).
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.
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.
Ever since the Amazon introduced the AWS Lambda service at AWS re:Invent 2014, a variety of new applications for the service has emerged which highlights tremendous potential and traction for the AWS Lambda service. Over last one year, Amazon has been actively working towards integrating other AWS services with AWS Lambda. You can consider recently released Amazon ElasticSearch service as a good example which heavily relies on AWS Lambda to stream the data from other AWS services such as Amazon
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.
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
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
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.
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.
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.
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.
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
Amazon today announced Amazon Elasticsearch Service (Amazon ES) - a fully managed Elasticsearch service which can support your real-time distributed search requirements. I am not sure about others, but for me a this is a big deal and can be a game changer. I have worked with both Splunk and Elasticsearch.
Today, we are releasing a plugin that allows customers to use the Titan graph engine with Amazon DynamoDB as the backend storage layer. It opens up the possibility to enjoy the value that graph databases bring to relationship-centric use cases, without worrying about managing the underlying storage. The importance of relationships. Relationships are a fundamental aspect of both the physical and virtual worlds.
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.
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.
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.
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