Kovair
SEPTEMBER 12, 2019
To know what Continuous Testing is, you should first see where development as a process came from. Earlier in the day, there was a Waterfall. The post Continuous Testing – Everything You Need to Know appeared first on Kovair Blog.
Dareboost
SEPTEMBER 10, 2019
How to properly measure how fast a web page starts to display its content? Several Web performance metrics exist to answer this question, including First Paint, Start Render and one of the newest: First Contentful Paint (FCP). How does FCP stand out, what are its limitations? Let’s dive into the metrics that measure the browser’s … Continue reading First Contentful Paint (FCP), Start Render, First Paint.
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TechBeacon Testing
SEPTEMBER 11, 2019
Usually when people think of code, they envision programs executed by computers to do X, Y, or Z. Infrastructure as code (IaC) is different. It is a method you can use to define a configuration model that represents a piece of your server environment.
DZone
SEPTEMBER 10, 2019
Testing the waters of Selenium Automation Testing. Selenium has been a pinnacle for open-source software in the industry of automated website testing. The automation testing framework is widely adopted by the testing community to help them in automating interactions with their web-application for desktops. I have been an automation tester for couple years now, and have been fondly towards Selenium ever since I knew what it’s capable of.
Dynatrace
SEPTEMBER 7, 2019
Dynatrace news. In April of this year, we released a long-awaited GA version of the full-stack OneAgent for the IBM AIX operating system. This release enriched our family of full-stack OneAgents with an important contribution. AIX is considered to be one of the core operating systems used by our largest customers. Its presence may not be impressive from a statistical point of view, compared to Linux and Windows, but the number of services running on AIX and their scale is breathtaking.
KeyCDN
SEPTEMBER 12, 2019
When it comes to marketing your website, there are a lot of different aspects to consider, such as speed, SEO, conversation rates, bounce rate, and many others. We normally focus solely on the performance aspect, but today we want to dive into additional ways you can optimize images for the web. The file size of your images of course is very important, but SEO and social media also play an important part in helping your website perform and convert better.
SQL Performance
SEPTEMBER 12, 2019
This article is the fifth part in a series about T-SQL bugs, pitfalls and best practices. Previously I covered determinism , subqueries , joins and windowing. This month I cover pivoting and unpivoting. Thanks Erland Sommarskog, Aaron Bertrand, Alejandro Mesa, Umachandar Jayachandran (UC), Fabiano Neves Amorim, Milos Radivojevic, Simon Sabin, Adam Machanic, Thomas Grohser, Chan Ming Man and Paul White for sharing your suggestions!
Technology Performance Pulse brings together the best content for technology performance professionals from the widest variety of industry thought leaders.
Dynatrace
SEPTEMBER 11, 2019
Dynatrace news. Dynatrace announces all service-related incidents that occur within our infrastructure on our service status page. To be notified of such incidents automatically, you can subscribe to outage notifications via email. But how can you know when an incident has been resolved? It’s not practical to manually refresh the service status page every few minutes.
SQL Server According to Bob
SEPTEMBER 9, 2019
Previous posts have discussed partitioning, for example, a partitioned memory object [link] and how a latch maintains the desired access (exclusive, shared, …) [link]. Quick Refresher Over Partitioned Protection/Locking. Acquiring shared access requires only the local partition be acquired (lightweight scalability). Acquiring exclusive access requires all partitions be acquired (heavier and can be slower).
TechBeacon Testing
SEPTEMBER 12, 2019
Many development teams won't attempt to create features and automate the tests for those features within the same sprint, since these two development activities together can easily take up the entire two-week sprint.
DZone
SEPTEMBER 9, 2019
How well does your Java perform? Iteration Performance. There are many views on how to iterate with high performance. The traditional way of iterating in Java has been a for-loop starting at zero and then counting up to some pre-defined number: private static final int ITERATIONS = 10_000; @Benchmark public int forUp() { int sum = 0; for (int i = 0; i < ITERATIONS; i++) { sum += i; } return sum; }.
Dynatrace
SEPTEMBER 7, 2019
Dynatrace news. Managing complex, heterogeneous infrastructure environments can be a real challenge for many organizations. Dynatrace provides great monitoring capabilities that help you identify and resolve problems with the software in your environment. Of course, Dynatrace itself is also software. This is why we invest continuous effort into making Dynatrace components as reliable and, more importantly, as safe as possible to use within demanding and dynamic environments.
Rigor
SEPTEMBER 11, 2019
Reading time 16 min Whether you’re a web performance expert, an evangelist for the culture of performance, a web engineer incorporating performance into your process, or someone new to the web performance entirely, you probably identify as curious, excited about new ideas, and always learning. We at Rigor respect many web performance leaders around the world.
Randon ASCII
SEPTEMBER 8, 2019
I work quickly on my computer and I get frustrated when I am forced to wait on an operation that should be fast. A persistent nuisance on my over-powered home laptop is that closing windows on the taskbar is slow. I right-click on an entry, wait for the menu to appear, and then select “Close window”. The mouse movement should be the slow part of this but instead I find that the delay before the menu appears is the longest component.
DZone
SEPTEMBER 13, 2019
Figuring out the best ways to implement UI testing. The software and its demand are increasing year over year with no predictable end in sight. Top companies are even responding high in the rat race with more productive and prompt means to deliver exceptional applications like scaling Agile and accepting DevOps. Many invest in resources to transform Development and Operations in terms of training, coaching, and tooling.
Dynatrace
SEPTEMBER 7, 2019
Dynatrace news. OneAgent. Java. Support added for reactor-netty version 0.8. Support for gRPC end-to-end tracing. Node.js. Database tracing using Couchbase Node.js client is now generally available. Go. Support for gRPC end-to-end tracing. General improvements. We’re continuing our investments into OneAgent for AIX. In this release, we’ve prepared two important enhancements: backport support for AIX 6.1 TL9 SP9 as well as massive improvements in OneAgent deployment and automa
The Polyglot Developer
SEPTEMBER 9, 2019
Recently I’ve been playing around with Netlify and as a result I’m becoming more familiar with caching strategies commonly found with content delivery networks (CDN). One such strategy makes use of ETag identifiers for web resources. In short, an ETag identifier is a value, typically a hash, that represents the version of a particular web resource.
The Morning Paper
SEPTEMBER 8, 2019
Experiences with approximating queries in Microsoft’s production big-data clusters Kandula et al., VLDB’19. I’ve been excited about the potential for approximate query processing in analytic clusters for some time, and this paper describes its use at scale in production. Microsoft’s big data clusters have 10s of thousands of machines, and are used by thousands of users to run some pretty complex queries.
DZone
SEPTEMBER 9, 2019
In August of 2018 Bob Diachenko, Director of Cyber Risk Research at Hacken.io found that over 2 million Mexican citizens had their healthcare data leaked due to a security vulnerability in a system's database. At that same time, he found that the data of 93 thousand users of a popular babysitting app, Sitter, was also exposed. As if this isn't scary enough, in November, Marriott Corporation revealed that over the last four years hackers had broken into its reservation system and stealing the pri
SQL Shack
SEPTEMBER 9, 2019
In this article, we will study in detail about the how SQL Server Index Fill factor works. Index Fill factor SQL Server Index Fill Factor is a percentage value to be filled data page with data in SQL Server. This option is available in index properties to manage data storage in the data pages. It […].
Sutter's Mill
SEPTEMBER 10, 2019
A reader asked: In C++17, for std::string::data(), is the returned buffer valid for the range [data(), data() + size()), or is it valid for [data(), data + capacity())? The latter seems more intuitive and what I think most people would expect reserve() to create given the non-const version of data() since C++17. … and then helpfully included the answer, but in fairness clearly they were wondering whether cppreference.com was correct: Relevant quote from cppreference.com: … “Ret
Dareboost
SEPTEMBER 10, 2019
How to properly measure how fast a web page starts to display its content? Several Web performance metrics exist to answer this question, including First Paint, Start Render and one of the newest: First Contentful Paint (FCP). How does FCP stand out, what are its limitations? Let’s dive into the metrics that measure the browser’s … Continue reading First Contentful Paint (FCP), Start Render, First Paint.
DZone
SEPTEMBER 11, 2019
Did someone say fuzzy? Improving Testing and Fuzz Development with Coverage Analysis. In my previous post, we covered using bncov to do open-ended coverage analysis tasks to inform our testing. This time we’ll take a look at how to write better tests in the form of harness programs (also known as fuzz drivers, programs are written to exercise specific parts of the code) that we will use for fuzz testing.
SQL Shack
SEPTEMBER 9, 2019
In this article, I will give an overview of Execute SQL Task in SSIS and I will try to illustrate some of the differences between writing an expression to evaluate SqlStatementSource property or writing this expression within a variable and change the Execute SQL Task Source Type to variable. This article is the fourth article […].
Dynatrace
SEPTEMBER 12, 2019
Dynatrace news. I’m going to revisit the Dynatrace digital transformation in this blog, because it is also an excellent story that began our journey to Autonomous Cloud Management (ACM). ACM is the culmination of our best practices and learning that we share every day with our customers to help them automate their enterprise, innovate faster, and deliver better business ROI.
The Morning Paper
SEPTEMBER 10, 2019
Procella: unifying serving and analytical data at YouTube Chattopadhyay et al., VLDB’19. Academic papers aren’t usually set to music, but if they were the chorus of Queen’s “I want it all (and I want it now…)” seems appropriate here. Anchored in the primary use case of supporting Google’s YouTube business, what we’re looking at here could well be the future of data processing at Google.
DZone
SEPTEMBER 13, 2019
Human error needs to be accounted for. I'm a big fan of test automation. To me, it's the best way to get software out the door. For the most part, automation brings a degree of speed and accuracy to the testing process that in many cases surpasses human capability. This is particularly true when it comes to UI testing. Having a roomful of testers sitting at keyboards entering data in the UI and then recording results can be a bottleneck when implementing testing in today's enterprise.
SQL Server According to Bob
SEPTEMBER 9, 2019
To track the login statistical information, enable the sp_configure value ‘common criteria compliance enabled ‘ setting and restart SQL Server. The sys.dm_exec_sessions DMV is one way to query the statistical login information. The rows shown in this example belong to the sa user on my system. The values are different because the values are obtained when the specific session was created (at login time for the individual session.).
Dynatrace
SEPTEMBER 9, 2019
Dynatrace news. I love data. I have spent virtually my entire career looking at data. Synthetic data, network data, system data, and the list goes on. In recent years, the amount of data we analyze has exploded as we look at the data collected by Real User Monitoring (RUM), meaning every session, every action, in every region and so on. As much as I love data, data is cold, it lacks emotion.
The Morning Paper
SEPTEMBER 12, 2019
Declarative recursive computation on an RDBMS… or, why you should use a database for distributed machine learing Jankov et al., VLDB’19. If you think about a system like Procella that’s combining transactional and analytic workloads on top of a cloud-native architecture, extensions to SQL for streaming , dataflow based materialized views (see e.g.
DZone
SEPTEMBER 12, 2019
Monitors for.monitoring! The next major thing for application teams after a software release is production monitoring. Production monitoring is broadly classified as. Application Monitoring. Infrastructure Monitoring. The production monitoring is made easy by APM (Application Performance Monitoring) tools. Both Application and infrastructure monitoring is done by APM’s.
The Netflix TechBlog
SEPTEMBER 10, 2019
Toby Mao , Sri Sri Perangur , Colin McFarland Another day, another custom script to analyze an A/B test. Maybe you’ve done this before and have an old script lying around. If it’s new, it’s probably going to take some time to set up, right? Not at Netflix. ABlaze: The standard view of analyses in the XP UI Suppose you’re running a new video encoding test and theorize that the two new encodes should reduce play delay, a metric describing how long it takes for a video to play after you press the s
Dynatrace
SEPTEMBER 12, 2019
Dynatrace news. New features and enhancements. Leverage the power of Davis AI with custom time-series events for your specific use cases (Preview). More flexible SAML configuration. Our default settings work well for most SSO servers that utilize the SAML protocol. However, for legacy services, testing and development purposes, or to reduce the time-to-start with SSO, you need to perform an advanced adjustment.
DZone
SEPTEMBER 9, 2019
Someone trying to look at the network through a 4-D lens. While ‘digital transformation’ and ‘cloud migration’ are two concepts with relatively broad definitions, they’re both rooted in the modernization of enterprise networks. This includes retiring legacy hardware and rethinking network architectures from the top-down to help facilitate a new wave of agile, cloud-delivered solutions and workflows.
DZone
SEPTEMBER 13, 2019
Readable code is usable code. The world’s greatest chefs never put anything on the plate that will never be eaten, this rule corresponds to the YAGNI principle in Software Engineering. The non-used code blocks saved for future use are sometimes forgotten and another developer could not be in want of changing the code of the legacy system. Such non-used code blocks may affect code readability in the future.
DZone
SEPTEMBER 10, 2019
Load Testing can monitor the response times of the system for every single transaction during a set period of time. This kind of monitoring can bring significant information, precisely for stakeholders and business managers, who look for conclusions based on these outcomes, along with any data for supporting these findings. Such type of testing can also raise attention to any complexity and issues in the application software and fix these performance bottlenecks before they become extra problema
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