2016

Welcoming Adrian Cockcroft to the AWS Team.

All Things Distributed

I am excited that Adrian Cockcroft will be joining AWS as VP of Cloud Architecture. Adrian has played a crucial role in developing the cloud ecosystem as Cloud Architect at Netflix and later as a Technology Fellow at Battery Ventures. Prior to this, he held positions as Distinguished Engineer at eBay and Sun Microsystems. One theme that has been consistent throughout his career is that Adrian has a gift for seeing the bigger engineering picture.

AWS 119

Reinventing Performance Testing: New Technologies

Alex Podelko

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. I decided to publish a few parts here to see if anything triggers a discussion. It would be published as separate posts: – Introduction (a short teaser). – Cloud. – Agile. – Continuous Integration. – New Architectures. New Technologies (this post).

Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

#NoEstimates, An Introduction.

Allen Holub

Estimates are waste. Not only are they not necessary, but they introduce dysfunction into the team. We should really just stop doing them. This thinking comes from the #NoEstimates movement (of which I’m a card-carrying member), which came onto the scene a couple years ago when @WoodyZuill created the #NoEstimates hash tag on Twitter. NoEstimates… Agility #NoEstimates agile

67

What Makes A Senior Software Developer?

Professor Beekums

UPDATE 2017-01-01: This post has a follow up. Most engineering organizations will have to answer the question: “What makes a software developer a senior developer?” This is a challenging question because it is extremely subjective. Search for the answer on the internet and you will get many different answers. Some will contain criteria that are also subjective themselves which adds additional difficulty to the question.

Why Uber Engineering Switched from Postgres to MySQL

Uber Engineering

By Evan Klitzke. Introduction. The early architecture of Uber consisted of a monolithic backend application written in Python that used Postgres for data persistence. Since that time, the architecture of Uber has changed significantly, to a model of microservices and … The post Why Uber Engineering Switched from Postgres to MySQL appeared first on Uber Engineering Blog. Architecture Open Source Data Database Infra MySQL Postgres Uber Data

Converting Your Ionic 2 Mobile App To NativeScript

The Polyglot Developer

As many of you know, I had been using Apache Cordova based frameworks such as Ionic Framework for a long time. They are convenient and easy to use when it comes to rapidly developing cross platform applications. The problem with using Apache Cordova frameworks such as PhoneGap, Ionic Framework and Onsen UI is the performance limitations that come with them, particularly because of their use of the platform web view.

Importance of Real-Time Reports and Traceability in Software Testing

Kovair

Introduction In the first and second part of our three-blog series in ‘Testing’ category, we have already discussed about the changing face of testing, importance. The post Importance of Real-Time Reports and Traceability in Software Testing appeared first on Kovair Blog. Test Management Benefits of Risk based Testing Continuous Testing Importance of Traceability Integrated Test Management Test Automation

More Trending

Track down front-end CPU hogs

Speed Curve

Often when monitoring and debugging site performance we focus on network activity and individual resources, but what about the CPU? As more and more sites switch to using large Javascript frameworks and manipulating the page using Javascript, the execution time this code takes and the available CPU can instead become the performance bottleneck. CPU usage for all Chrome tests. For any of SpeedCurve's Chrome-based tests, including emulated devices, we capture the Chrome Dev Tools timeline.

Design Patterns: Cache-Aside Pattern

cdemi

Applications that rely heavily on a data-store usually can benefit greatly from using the Cache-Aside Pattern. If used correctly, this pattern can improve performance and help maintain consistency between the cache and the underlying data store. This post is part of a Design Patterns series. Reading Data. Using the Cache-Aside Pattern dictates that when you want to retrieve an item from the Data Store, first you check in your cache. If the item exists in the cache, you can use that.

Cache 49

GLibC DNS Exploit in Unix/Linux Machines

Dotcom-Montior

A DNS related exploit of Unix and Linux based operating systems has been gaining attention lately. The vulnerability exploits a bug in the GNU C library commonly referred to as the GLibC, serves as the core C library for many flavors of Linux and Unix based operating systems. This library is commonly used in linux… The post GLibC DNS Exploit in Unix/Linux Machines appeared first on Dotcom-Monitor Web Performance Blog. Performance Tech Tips

C++ 49

MXNet - Deep Learning Framework of Choice at AWS

All Things Distributed

Machine learning is playing an increasingly important role in many areas of our businesses and our lives and is being employed in a range of computing tasks where programming explicit algorithms is infeasible. At Amazon, machine learning has been key to many of our business processes, from recommendations to fraud detection, from inventory levels to book classification to abusive review detection.

AWS 106

Reinventing Performance Testing: New Architectures

Alex Podelko

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. I decided to publish a few parts here to see if anything triggers a discussion. It would be published as separate posts: – Introduction (a short teaser). – Cloud. – Agile. – Continuous Integration. New Architectures (this post). – New Technologies.

CPP: A Standardized Alternative to AMP

Tim Kadlec

It’s no secret that I have reservations about Google’s AMP project in its current form. I do want to make it clear, though, that what bothers me has never been the technical side of things—AMP as a performance framework. The community working on AMP is doing good work to make a performant baseline. As with any framework, there are decisions I agree with and some I don’t, but that doesn’t mean the work isn’t solid—it just means we have different ways of approaching building for the web.

Beware of Developers Who Do Negative Work

Professor Beekums

UPDATE 2016-12-25: This post has an important follow-up. At some point in every software developer’s career, we work with someone who does negative work. The notion of negative work may sound a little strange. Someone can do no work by just… not working. How does negative work happen? One example of this is an awful developer that was once at the same company as me. He made 2 changes to the code base over his 6-month tenure there

Dockerizing MySQL at Uber Engineering

Uber Engineering

Uber Engineering’s Schemaless storage system powers some of the biggest services at Uber, such as Mezzanine. Schemaless is a scalable and highly available datastore on top of MySQL ¹ clusters. Managing these clusters was fairly easy when we had … The post Dockerizing MySQL at Uber Engineering appeared first on Uber Engineering Blog. Architecture Ansible Containers Docker GTID Mezzanine MySQL Percona Puppet Schemaless

What, Exactly, Makes Something A Progressive Web App?

Alex Russell

Since Frances and I published a blog post last year introducing Progressive Web Apps , a healthy conversation has started about what is and isn’t a PWA. There are a lot of opinions and many shades of gray. What are the hard requirements? Which requirements are marginal? What’s aspirational? This article outlines these requirements, attempts to classify them, and provides a baseline for “what is a Progressive Web App?”

5 Major Criteria for Selecting a Testing Tool

Kovair

Today, the entire software development process is going through a cultural shift from the traditional Waterfall model to the modern agile methodology. With this paradigm. The post 5 Major Criteria for Selecting a Testing Tool appeared first on Kovair Blog. Test Management How to select testing tools Support for Test Automation Test Automation

How It Works (It Just Runs Faster): Auto Soft NUMA…

SQL Server According to Bob

Back in June, Bob Dorr gave you the thinking behind why SQL Server 2016 It Just Runs Faster due to changes in our SQL Server and NUMA configurations. Bob blogged about a new SQL Server 2016 feature called Auto Soft NUMA. As I’ve hit the road and talked more about SQL Server 2016: It Just Runs Faster , I’ve received some questions about how Auto Soft NUMA works and how to recognize how SQL Server detects a NUMA configuration and makes decisions to partition it even further.

Memory Latency on the Intel Xeon Phi x200 “Knights Landing” processor

John McCalpin

The Xeon Phi x200 (Knights Landing) has a lot of modes of operation (selected at boot time), and the latency and bandwidth characteristics are slightly different for each mode. It is also important to remember that the latency can be different for each physical address, depending on the location of the requesting core, the location of the coherence agent responsible for that address, and the location of the memory controller for that address.

Design Patterns: Queue-Based Load Leveling Pattern

cdemi

Modern software usually involves running tasks that invoke services. If the service is subjected to intermittent heavy loads, it can cause performance or reliability issues. If the same service is utilized by a number of tasks running concurrently, it can be difficult to predict the volume of requests to which the service might be subjected at any given point in time.

Is Your Website Mobile Friendly? The Mobile Speed Test

Dotcom-Montior

So why do you want to know if your website is mobile friendly? Most likely it is because you have heard about last year's announcement from google over at google webmaster central. It turns out that Google has updated their algorithm to significantly increase the weight of mobile-friendliness as a ranking signal. That's right, significantly! So, optimizing your site for mobile is the way of the future! The post Is Your Website Mobile Friendly?

Speed 41

Allez, rendez-vous à Paris – An AWS Region is coming to France!

All Things Distributed

Today, I am very excited to announce our plans to open a new AWS Region in France! Based in the Paris area, the region will provide even lower latency and will allow users who want to store their content in datacenters in France to easily do so. The new region in France will be ready for customers to use in 2017. Over the past 10 years, we have seen tremendous growth at AWS. As a result, we have opened 35 Availability Zones (AZs), across 13 AWS Regions worldwide.

AWS 101

Reinventing Performance Testing: Continuous Integration

Alex Podelko

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. I decided to publish a few parts here to see if anything triggers a discussion. It would be published as separate posts: – Introduction (a short teaser). – Cloud. – Agile. Continuous Integration (this post). – New Architectures. – New Technologies.

Upgrading our stack for web performance: early flushing, http/2, and more

Wayfair Tech

What's fast, jank-free, and has what you need for your home? Wayfair's mobile web site, that's what! Behind this spiffy Android experience, and behind all of the ways into Wayfair that we make available to our customers, are some fresh technical upgrades and an evolution of our programming and product. Read more. Web Performance

Programming Has Changed My Life

Professor Beekums

Sometimes I look back on my life and wonder what it would have been like if I had never started programming. Obviously my career would be different, but I believe that programming has fundamentally changed how I think. Who I am as a person has changed significantly due to solving as many software problems as I have and the changes have been for the better. Teenage me was severely flawed

How Uber for Business Engineering Verifies Your Ride in Real Time

Uber Engineering

Our last article on Uber for Business (U4B) discussed implementing our ride profiles feature. Today, we want to share more insight into the kind of technical challenges we’re solving. Just because our mission is to improve businesses’ experiences doesn’t … The post How Uber for Business Engineering Verifies Your Ride in Real Time appeared first on Uber Engineering Blog. Architecture JavaScript JSON U4B

PWA Discovery: You Ain’t Seen Nothin Yet

Alex Russell

Ada pitched into the conversation about the state of PWAs — particularly Chrome’s heuristics which prompted a Twitter discussion about some of the finer points of the user and developer experience. The background to these conversations is that today, the way users learn that they can install a Progressive Web App is via a prompt browsers decide to show at their discretion. The reason for heuristics is the quality bar that Ada so deftly summarized (and which Remy had an “aha!”

Importance of Test Automation and How Kovair Supports It

Kovair

In our previous blog “Revolution of Testing”, we have discussed the importance of test automation in today’s application development lifecycle. In this blog, we will. The post Importance of Test Automation and How Kovair Supports It appeared first on Kovair Blog. Test Management Benefits of Risk based Testing Continuous Testing Estimating Test Efforts How to select testing tools Integrated Test Management Support for Test Automation Test Automation

How It Works: How is SQL Server Error 833, 15 Sec I/O Detected

SQL Server According to Bob

I was approached to revisit the details of how Error Message 833 is detected and reported. SQL Server has encountered %d occurrence(s) of I/O requests taking longer than %d seconds to complete on file [%ls] in database [%ls] (%d). The OS file handle is 0x%p. The offset of the latest long I/O is: %#016I64x. Older versions of SQL Server leveraged the Lazy Writer and I/O completion callback routines to record vs report the error condition.

Intel discloses “vector+SIMD” instructions for future processors

John McCalpin

The art and science of microprocessor architecture is a never-ending struggling to balance complexity, verifiability, usability, expressiveness, compactness, ease of encoding/decoding, energy consumption, backwards compatibility, forwards compatibility, and other factors. In recent years the trend has been to increase core-level performance by the use of SIMD vector instructions, and to increase package-level performance by the addition of more and more cores.

Cache 40

Design Patterns: Competing Consumer Pattern

cdemi

Building on the Queue-Based Load Leveling Pattern , the Competing Consumer Pattern enables a system to process multiple messages concurrently to optimize throughput, to improve scalability and availability, and to balance the workload. During the lifetime of an application, the number of requests may vary significantly over time. Using a single instance of the consumer service might cause that instance to become flooded with requests. Competing Consumers.

Microsoft Internet Explorer End of Support

Dotcom-Montior

This is a big week for Microsoft end of support agreements. As of January 12, 2016, older versions of Internet explorer are no longer supported. IE 11 is the only version to receive updates moving forward. According to Microsoft’s website “Beginning January 12, 2016, only the most current version of Internet Explorer available for a supported… The post Microsoft Internet Explorer End of Support appeared first on Dotcom-Monitor Web Performance Blog. Performance Tech Tips

10 Lessons from 10 Years of Amazon Web Services

All Things Distributed

The epoch of AWS is the launch of Amazon S3 on March 14, 2006, now almost 10 years ago. Looking back over the past 10 years, there are hundreds of lessons that we’ve learned about building and operating services that need to be secure, reliable, scalable, with predictable performance at the lowest possible cost. Given that AWS is a pioneer in building and operating these services world-wide, these lessons have been of crucial importance to our business.

AWS 96

Reinventing Performance Testing: Agile

Alex Podelko

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. I decided to publish a few parts here to see if anything triggers a discussion. It would be published as separate posts: – Introduction (a short teaser). – Cloud. Agile (this post). – Continuous Integration. – New Architectures. – New Technologies.

Testing PHP7

Wayfair Tech

PHP7 is out. This isn’t news. It’s been out since last December, with nine minor revisions since then. What’s new is that it’s serving all of Wayfair’s customer-facing traffic. Performance-wise, PHP7 is the rocket ship people said it would be. We’re nothing but pleased. If you can upgrade, you should do. Read more. Open Source Web Performance open source php

Switching Costs in Software Development

Professor Beekums

Switching costs are an important part of software development. When my software relies on one service, the amount of time I have to spend moving it to another service is called a switching cost. In general, you want these to be as low as possible. The reason is that if the service you are dependent on ever becomes unsatisfactory or even harmful to you, then you need to be able to switch to a competitor service

Engineering the Architecture Behind Uber’s New Rider App

Uber Engineering

Why Uber Started Over. Uber is based on a simple concept: push a button, get a ride. What started as a way to request premium black cars now offers a range of products, coordinating millions of rides per day across … The post Engineering the Architecture Behind Uber’s New Rider App appeared first on Uber Engineering Blog. Architecture Mobile Android iOS MVC UberEATS UberPOOL UberX VIPER