DZone
MARCH 5, 2020
As a Java Developer, we need to cover a lot of scenarios to ensure the quality of our software and catch bugs as soon as possible when introducing a new code. For 99% of all my use cases AssertJ, Junit, Mockito, and Wiremock are sufficient enough do cover the test cases. But for the other use cases, like unit testing info, debug or warn log messages, these frameworks don't help you out.
Scalegrid
MARCH 23, 2020
In our previous posts in this series, we discussed the case for connection pooling and introduced PgBouncer. In this post, we will discuss its most popular alternative – Pgpool-II. Pgpool-II is the swiss army knife of PostgreSQL middleware. It supports high-availability, provides automated load balancing, and has the intelligence to balance load between masters and slaves so write loads are always directed at masters, while read loads are directed to slaves.
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Dynatrace
MARCH 3, 2020
Dynatrace news. Organizations are being challenged, but also seizing the opportunity, to digitally transform their businesses with better customer experiences and new and competitive services, to increase business value. The IDC FutureScape: Worldwide IT Industry 2020 Predictions highlights key trends for IT industry-wide technology adoption for the next five years and includes these predictions: Hasten to innovation.
High Scalability
MARCH 27, 2020
Hey, it's HighScalability time! Awesome explanation of how to build a PID controller to fly a rocket! ( BPS.space via Orbital Index ). Do you like this sort of Stuff? Without your support on Patreon this kind of Stuff can't happen. You are that important to the fate of the intelligent world. Know someone who wants to understand the cloud? I wrote Explain the Cloud Like I'm 10 just for them.
Jos
MARCH 13, 2020
Web Performance is important for user experience and business metrics. Estimating its impact is key to be able to prioritize it, yet it’s difficult to quantify its benefits until the work has been done. We need to break this chicken-and-egg loop. This post explains several ways of assessing the potential performance gains with little effort and, more importantly, without actually implementing fixes.
The Netflix TechBlog
MARCH 5, 2020
By Kevin Glisson, Marc Vilanova, Forest Monsen Netflix is pleased to announce the open-source release of our crisis management orchestration framework: Dispatch! Okay, but what is Dispatch? Put simply, Dispatch is: All of the ad-hoc things you’re doing to manage incidents today, done for you, and a bunch of other things you should’ve been doing, but have not had the time!
DZone
MARCH 12, 2020
When Go first appeared in November 2009, we didn't hear much about it, and our first interaction happened in 2012 when Go version 1 was officially released by Google. Our team decided to convince our customer to use it for its project, but it was a hard sell, and the customer rejected our recommendation (mostly due to lack of the knowledge in their support team ).
Technology Performance Pulse brings together the best content for technology performance professionals from the widest variety of industry thought leaders.
Dynatrace
MARCH 4, 2020
Dynatrace news. Dynatrace introduced Session Replay some time ago to help modernize your DEM strategy. Session Replay enables you to capture and visually replay the complete digital experience of your end users. It helps you identify errors, analyze areas of struggle, and provides tons of analytical data for your testing teams. For details, see how to get the most value out of Session Replay.
High Scalability
MARCH 13, 2020
p>Hey, it's HighScalability time! The top 10,000 most spoken words in English represented by a point in hundreds of dimensions where the distance and direction between points encodes the relationship between words. ( roadmaps ). Do you like this sort of Stuff? Without your support on Patreon this kind of Stuff can't happen. You are that important to the fate of the intelligent world.
Jos
MARCH 13, 2020
Web Performance is important for user experience and business metrics. Estimating its impact is key to be able to prioritize it, yet it’s difficult to quantify its benefits until the work has been done. We need to break this chicken-and-egg loop. This post explains several ways of assessing the potential performance gains with little effort and, more importantly, without actually implementing fixes.
The Netflix TechBlog
MARCH 5, 2020
Netflix has a program in our Information Security department for quantifying the risk of deliberate (attacker-driven) and accidental… Continue reading on Netflix TechBlog ».
DZone
MARCH 6, 2020
For the number of years I’ve been programming using Julia, I’ve never really been concerned with performance. Which is to say, I’ve appreciated that other people are interested in performance and have proven that Julia can be as fast as any other performance language out there. But I’ve never been one to pour over the Performance Tips section of the Julia manual trying to squeeze every last bit of performance.
Brendan Gregg
MARCH 8, 2020
Systems performance is an effective discipline for performance analysis and tuning, and can help you find performance wins for your applications and the kernel. However, most of us are not performance or kernel engineers, and have limited time to study this topic. To serve this need I summarized Linux systems performance in 40 minutes at USENIX LISA 2019, touring six important areas: observability tools, methodologies, benchmarking, profiling, tracing, and tuning.
Dynatrace
MARCH 11, 2020
Dynatrace news. Kubernetes has become the industry standard platform for running and managing containerized workloads at scale. The Kubernetes platform, at its core, is designed to maintain and keep up with a defined state for running workloads. In many cases, events are generated as these workloads go through different phases of their life cycles. For instance, events appear when the scheduler performs actions to bring workloads back to a desired state.
O'Reilly
MARCH 4, 2020
Freeman Dyson died last week at the age of 96 after injuring himself in a fall in the cafeteria at the Institute of Advanced Studies in Princeton, where he had continued to work right up to the end. I can’t resist adding to the outpouring of appreciation and love that has ensued. He has an outsized place in my mind and in my heart for someone whom I met in person fewer than a half-dozen times.
High Scalability
MARCH 3, 2020
Who's Hiring? Are you looking to improve how you hire technical talent ? Essilen Research 's free video series can help. Fix common issues in screening, interviewing, closing and on-boarding. Learn how world-class tech companies crush the hiring game! Sisu Data is looking for machine learning engineers who are eager to deliver their features end-to-end, from Jupyter notebook to production, and provide actionable insights to businesses based on their first-party, streaming, and structured relatio
The Netflix TechBlog
MARCH 3, 2020
By Ben Sykes Continue reading on Netflix TechBlog ».
DZone
MARCH 26, 2020
It's easy to write "unit test" tests that use JUnit and some mocking library. They may produce code coverage that keeps some stakeholders happy, even though the tests aren't even unit tests and provide questionable value. It can also be very easy to write unit tests that are — in theory — units test but are more complex than the underlying code and hence just add to the total software entropy.
SQL Performance
MARCH 11, 2020
This article is Part 4 in a series about NULL complexities. In the previous articles ( Part 1 , Part 2 , and Part 3 ), I covered the meaning of the NULL as a marker for a missing value, how NULLs behave in comparisons and in other query elements, and standard NULL handling features that are not yet available in T-SQL. This month I cover the difference between the way a unique constraint is defined in the ISO/IEC SQL standard and the way it works in T-SQL.
Dynatrace
MARCH 13, 2020
Dynatrace news. Dear Dynatrace Community, As COVID-19 (the coronavirus) continues to impact communities globally, I want to update you on the measures we have taken to ensure the continuity of our offerings and services for you , as well the safety of our customers , partners and employees around the world. . A s a cloud-based SaaS company with global operations , Dynatrace products and services will not be impacted.
Tim Kadlec
MARCH 18, 2020
I recently wrote about how important it is to make the right thing easy. The opposite is also true: it’s important to make the wrong things difficult. I did allude to it in that post a little bit, but I thought it was worth calling out explicitly. It’s important to introduce some friction in our workflow to help prevent the wrong actions.
High Scalability
MARCH 24, 2020
Who's Hiring? Scrapinghub is hiring a Senior Software Engineer (Big Data/AI). You will be designing and implementing distributed systems : large-scale web crawling platform, integrating Deep Learning based web data extraction components, working on queue algorithms, large datasets, creating a development platform for other company departments, etc. - this is going to be a challenging journey for any backend engineer!
Smashing Magazine
MARCH 9, 2020
Setting Height And Width On Images Is Important Again. Setting Height And Width On Images Is Important Again. Barry Pollard. 2020-03-09T11:30:00+00:00. 2020-03-09T13:41:45+00:00. Web performance advocates have often advised to add dimensions to your images for best performance to allow the page to be laid out with the appropriate space for the image, before the image itself has been downloaded.
DZone
MARCH 19, 2020
Recently there has been a surge of interest in C++ unit testing. C++ unit testing has not been common in C++ development in the past. Although C++ is a kind of programming language that fits well with unit testing, several complexities require extra care. In this article, I’ll discuss the most common pitfalls.
SQL Performance
MARCH 26, 2020
A performance tuning engagement can end up taking many turns as you work through it – it all depends on what is showing up as the problem and what the data tells you. Some days it lands on a specific query, or set of queries, that can be improved with indexes – either new ones or modifications to existing indexes. One of my favorite parts of tuning is working with indexes and, as I was thinking about this post, I was tempted to label index tuning as an "easier" task… but it really isn't.
Dynatrace
MARCH 10, 2020
Dynatrace news. “I now have 20 teams using Dynatrace. Within the next 2 quarters we will move our app teams to the cloud. I will then have to onboard more than 150 teams to Dynatrace! How can I do this effectively while maintaining configuration consistency across the teams?”. – A Dynatrace customer. This is a typical question we hear from our customers.
Scalegrid
MARCH 23, 2020
Customers & Friends, With the impact of COVID-19 growing around the world, we are taking proactive steps to prepare our infrastructure to continue seamlessly as we navigate this critical time. In an abundance of caution to the rapidly growing climate of the pandemic, we are taking extreme measures to ensure the safety of our employees, customers and partners.
High Scalability
MARCH 17, 2020
Who's Hiring? Sisu Data is looking for machine learning engineers who are eager to deliver their features end-to-end, from Jupyter notebook to production, and provide actionable insights to businesses based on their first-party, streaming, and structured relational data. Apply here. T riplebyte lets exceptional software engineers skip screening steps at hundreds of top tech companies like Apple, Dropbox, Mixpanel, and Instacart.
Smashing Magazine
MARCH 16, 2020
Implementing Infinite Scroll And Image Lazy Loading In React. Implementing Infinite Scroll And Image Lazy Loading In React. Chidi Orji. 2020-03-16T12:00:00+00:00. 2020-03-16T21:15:46+00:00. If you have been looking for an alternative to pagination, infinite scroll is a good consideration. In this article, we’re going to explore some use cases for the Intersection Observer API in the context of a React functional component.
DZone
MARCH 16, 2020
Have you noticed the ubiquity of web forms while surfing the internet? Almost every website or web-application you visit leverages web-forms to gain relevant information about yourself. From creating an account over a web-application to filling a brief survey, web forms are everywhere! A form comprises web elements such as checkbox, radio button, password, drop down to collect user data.
The Morning Paper
MARCH 8, 2020
Building an elastic query engine on disaggregated storage , Vuppalapati, NSDI’20. This paper describes the design decisions behind the Snowflake cloud-based data warehouse. As the saying goes, ‘all snowflakes are special’ – but what is it exactly that’s special about this one? When I think about cloud-native architectures, I think about disaggregation (enabling each resource type to scale independently), fine-grained units of resource allocation (enabling rapid resp
Dynatrace
MARCH 23, 2020
Dynatrace news. A decade ago, while working for a large hosting provider, I led a team that was thrown into turmoil over the purchasing of server and storage hardware in preparation for a multi-million dollar super-bowl ad campaign. Our procurement decisions were based on trace data that was pulled from a handful of fragmented monitoring solutions. The data had to be painstakingly stitched together over the course of a few weeks, across each layer of our stack.
SQL Performance
MARCH 20, 2020
We're mid-cycle between releases, where we're not yet hearing about any of the features planned for SQL Server vNext. This is probably the best time to press Microsoft for improvements, as long as we can back our requests with legitimate business cases. In SQL Server 2016, STRING_SPLIT solved a long-missing gap in a language that, admittedly, was not intended for complicated string processing.
High Scalability
MARCH 30, 2020
Who's Hiring? InterviewCamp.io has hours of system design content. They also do live system design discussions every week. They break down interview prep into fundamental building blocks. Try out their platform. Scrapinghub is hiring a Senior Software Engineer (Big Data/AI). You will be designing and implementing distributed systems : large-scale web crawling platform, integrating Deep Learning based web data extraction components, working on queue algorithms, large datasets, creating a developm
Simform
MARCH 2, 2020
Ever wondered if Nodejs can be used with React? Is it right to use Nodejs with React? When using Reactjs with Nodejs make sense? Does Nodejs provide powerful tools to make working with React seamless? Through this blog post, we’ll answer all your common questions about technologies: React and Nodejs. The post Should you use Nodejs with React for Web Development?
DZone
MARCH 17, 2020
Automation testing has become one of the most adopted techniques in the software testing process, it helps to accelerate go-to-market launch while providing enough bandwidth for the testers to work on finding critical test cases. However, I have seen it happen in multiple organizations that the higher-ups often hesitate to implement automation testing for their projects, only due to some misconceptions.
The Morning Paper
MARCH 12, 2020
Rex: preventing bugs and misconfiguration in large services using correlated change analysis , Mehta et al., NSDI’20. and. Check before you change: preventing correlated failures in service updates , Zhai et al., NSDI’20. Today’s post is a double header. I’ve chosen two papers from NSDI’20 that are both about correlation.
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