August, 2019

Learning and Strategy

Edge Perspectives

Scalable learning will be the key to institutional success as we move deeper into an exponentially changing world. But to really scale learning, we’re going to need to adopt a very different approach to strategy – the “zoom out, zoom in” approach.

Top Redis Use Cases by Core Data Structure Types

Scalegrid

Redis , short for Remote Dictionary Server, is a BSD-licensed, open-source in-memory key-value data structure store written in C language by Salvatore Sanfillipo and was first released on May 10, 2009. Depending on how it is configured, Redis can act like a database, a cache or a message broker. It’s important to note that Redis is a NoSQL database system.

14 Best Performance Testing Tools & APM Solutions

Abstracta

With all of the free and enterprise tools available for performance testing, there’s no excuse for having a system failure Performance tests reveal how a system behaves and responds during various situations. A system may run very well with only 1,000 concurrent users, but how. The post 14 Best Performance Testing Tools & APM Solutions appeared first on Abstracta Software Testing Services. Performance Engineering Tools APM BlazeMeter JMeter load testing performance monitoring

Time to First Byte: What It Is and Why It Matters

CSS Wizardry

How to get the most value out of Session Replay: Use cases and examples

Dynatrace

Dynatrace news. At Dynatrace, we’re constantly striving to come up with solutions that can help modernize your performance and user experience monitoring strategies.

The Future of Performance Testing

Alex Podelko

Following up my post Are Times still Good for Load Testing? , I decided to answer multiple comments here separately. First, I’d like to elaborate on “It may be less need for simple load testing due to increased scale and sophistication of systems” I meant that the traditional way – testing the system before deploying in production using production-type workload – is not the only way anymore.

Applying Netflix DevOps Patterns to Windows

The Netflix TechBlog

Baking Windows with Packer By Justin Phelps and Manuel Correa Customizing Windows images at Netflix was a manual, error-prone, and time consuming process.

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More Trending

Functional Testing vs. Non-Functional Testing

DZone

According to a report, app crashes cause 71% of uninstalls. Other reasons that compel users to uninstall the app are page response time, confusing UI, battery consumption, etc. This indicates the importance of functional testing as well as non-functional testing to deliver a user-friendly app.

Making Cloud.typography Fast(er)

CSS Wizardry

Disclaimers: I was not approached or hired by Hoefler&Co or Cloud.typography to look into any of the following issues. I disclosed all of the below to Cloud.typography and gave them ample opportunity to work together to solve the issues at the root of the problem.

How to get the answers you deserve using the three pillars of observability

Dynatrace

Dynatrace news. In software, observability refers to telemetry produced by services. Observability is divided into three major verticals—metrics, logs, and distributed traces—the so-called three pillars of observability.

Less Data Doesn't Mean a Lesser Experience

Tim Kadlec

After yesterday’s post , someone on Twitter expressed concern about providing a “degraded experience” to users who have Save-Data enabled. It’s far from the first time I’ve heard this concern expressed.

Snuba: automating weak supervision to label training data

The Morning Paper

Snuba: automating weak supervision to label training data Varma & Ré, VLDB 2019. This week we’re moving on from ICML to start looking at some of the papers from VLDB 2019.

T-SQL bugs, pitfalls, and best practices – window functions

SQL Performance

This article is the fourth installment in a series about T-SQL bugs, pitfalls and best practices. Previously I covered determinism , subqueries and joins. The focus of this month's article is bugs, pitfalls and best practices related to window functions.

Unit and Integration Tests in Spring Boot

DZone

Overview. In this post, we'll have a look at how to write tests unit and integration in a Spring Boot environment. You can find tons of tutorials online on this topic but it is very difficult to find all the information that you need in just one page.

Lazy Pre-Browsing with Prefetch

CSS Wizardry

I’m working with a client at the moment who, unfortunately, has a blocking third party stylesheet that’s needed to successfully render one of their site’s key pages.

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Build automated self-healing systems with xMatters and Dynatrace (Part 2 of 3)

Dynatrace

Dynatrace news. Welcome back to the blog series in which we share how you can easily solve three common problem scenarios by using Dynatrace and xMatters Flow Designer.

The Human Value in Driving Automated DevOps Testing

Kovair

The increasing demand for IT companies to deliver high-quality software at a rapid speed has made it compulsory to shift towards using Agile and DevOps. The post The Human Value in Driving Automated DevOps Testing appeared first on Kovair Blog.

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Learning to prove theorems via interacting with proof assistants

The Morning Paper

Learning to prove theorems via interacting with proof assistants Yang & Deng, ICML’19. Something a little different to end the week: deep learning meets theorem proving! It’s been a while since we gave formal methods some love on The Morning Paper, and this paper piqued my interest.

Batch Mode Bitmaps in SQL Server

SQL Performance

Background. In traditional row-mode execution plans, SQL Server may introduce a Bitmap operator as part of performing early semi join reduction before a parallel hash or merge join. The bitmap is constructed from the build input, and used to filter rows on the probe input before they reach the join.

14 Best Performance Testing Tools and APM Solutions

DZone

With All of the Free and Enterprise Tools Available for Performance Testing, There’s No Excuse for Having a System Failure. Performance tests reveal how a system behaves and responds during various situations.

Google PageSpeed Insights - Scoring 100/100 with WordPress

KeyCDN

Running speed tests with tools like Google PageSpeed Insights , WebPageTest , or KeyCDN’s Website Speed Test are always a good way to help gauge your website’s performance. While these metrics can be very helpful it is also important to keep this data in perspective.

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Embark on a journey towards Autonomous Cloud Management with Dynatrace

Dynatrace

Dynatrace news. It feels like just yesterday DevOps was all the rage, and everything had to be “Cloud” in order to be modern. These days, most organizations have embraced the benefits of DevOps and are running one or more of their applications on somebody else’s computer.

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Modern applications at AWS

All Things Distributed

Innovation has always been part of the Amazon DNA, but about 20 years ago, we went through a radical transformation with the goal of making our iterative process—" invent, launch, reinvent, relaunch, start over, rinse, repeat, again and again "—even faster.

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Robust learning from untrusted sources

The Morning Paper

Robust learning from untrusted sources Konstantinov & Lampert, ICML’19. Welcome back to a new term of The Morning Paper! Just before the break we were looking at selected papers from ICML’19, including “Data Shapley.”

tempdb Enhancements in SQL Server 2019

SQL Performance

I have been making the same recommendations about tempdb since I started working with SQL Server over 15 years ago, when I was working with customers running version 2000.

14 Ways In Which Cross-Browser Testing Ensures A Better UX

DZone

A customer who is visiting your website from Google Chrome may have a different user experience than a customer who is visiting your website from Safari, Mozilla Firefox, or any other browser. But wait, there is more!

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Using rel=”preconnect” to establish network connections early and increase performance

CSS - Tricks

Milica Mihajlija : Adding rel=preconnect to a <link> informs the browser that your page intends to establish a connection to another domain, and that you'd like the process to start as soon as possible.

How to Optimize Digital Experience and Operations with Dynatrace

Dynatrace

Dynatrace news. I was fortunate enough to get invited to our PerformGo! APAC Series.

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Faster Image Loading With Embedded Image Previews

Smashing Magazine

Faster Image Loading With Embedded Image Previews. Faster Image Loading With Embedded Image Previews. Christoph Erdmann. 2019-08-23T13:30:59+02:00. 2019-08-23T13:06:42+00:00. Low Quality Image Preview (LQIP) and the SVG-based variant SQIP are the two predominant techniques for lazy image loading.

Choosing a cloud DBMS: architectures and tradeoffs

The Morning Paper

Choosing a cloud DBMS: architectures and tradeoffs Tan et al., VLDB’19. If you’re moving an OLAP workload to the cloud (AWS in the context of this paper), what DBMS setup should you go with?

Save-Data Usage

Tim Kadlec

Yesterday someone at Shopify let me know on Twitter that they started reducing page weight if the Save-Data header is on. tkadlec [link] is now Save-Data aware. About a 13% reduction in page weight, [link]. Early data shows 20% of Indian/Brazilian requests contain this header so happy days #webperf ??. I love seeing companies paying attention to the Save-Data header.

Testing Code With REST Calls Made Easy

DZone

Introduction. These days, our code frequently has to reach out to a remote server as part of its job, usually consuming an API or some other service. Frequently, our code communicates with these remote services in a RESTful manner. java server performance spring rest http junit mocking frameworks

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Fast Websites Are Good for the World

MachMetrics

Did you realize that making your site faster is not just great for your sales, it’s also good for the world?

Monitor your OAuth 2.0 protected APIs with Dynatrace Synthetic

Dynatrace

Dynatrace news. As microservices and automation continue to drive API usage, most organizations have either already introduced, or plan to introduce, an API testing process. With Dynatrace Synthetic you can easily create API tests with synthetic monitors.

Handling Unused CSS In SASS To Improve Performance

Smashing Magazine

Handling Unused CSS In SASS To Improve Performance. Handling Unused CSS In SASS To Improve Performance. Luke Harrison. 2019-08-09T12:30:59+02:00. 2019-08-09T12:36:17+00:00. In modern front-end development, developers should aim to write CSS which is scalable and maintainable.

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Statistical foundations of virtual democracy

The Morning Paper

Statiscal foundations of virtual democracy Kahng et al., ICML’19. This is another paper on the theme of combining information and making decisions in the face of noise and uncertainty – but the setting is quite different to those we’ve been looking at recently. Consider a food bank that receives donations of food and distributes it to those in need.

SSIS Expression Task Vs Evaluating variable as expression

SQL Shack

In this article, I will first give an introduction about SSIS expressions, then I will describe briefly the Expression Task and how to Evaluate a variable as expression. Then I will do a comparison between these two features to illustrate the similarities and differences between them.