DZone

MAY 3, 2023

System testing, also known as system-level testing, involves evaluating how the various components of an application interact in a fully integrated system. It is carried out on the entire system under either functional or design requirements. It validates the design, behavior, and customer expectations of the system.

Best Practices 130

Best Practices Testing Systems Software 130

InfoQ

MAY 15, 2023

A horizontally scalable exabyte-scale blob storage system which operates out of multiple regions, Magic Pocket is used to store all of Dropbox’s data. Adopting SMR technology and erasure codes, the system has extremely high durability guarantees but is cheaper than operating in the cloud. By Facundo Agriel

Storage 124

Storage Systems Scalability Cloud 124

Particular Software

MAY 22, 2023

Is this the best way to build a system, though? For example, you might need the data to be denormalized for performance, or the warehouse data might exist on a physically different system that can’t participate in a database join. Think of the nouns and what attributes they have. A dog and a cat are both animals and have 4 legs.

Systems 98

Systems Cache Database Software 98

The Netflix TechBlog

SEPTEMBER 29, 2022

Timestone: Netflix’s High-Throughput, Low-Latency Priority Queueing System with Built-in Support for Non-Parallelizable Workloads by Kostas Christidis Introduction Timestone is a high-throughput, low-latency priority queueing system we built in-house to support the needs of Cosmos , our media encoding platform. Over the past 2.5

Latency 214

Latency Systems Serverless Servers 214

Dynatrace

JANUARY 12, 2022

Messaging systems can significantly improve the reliability, performance, and scalability of the communication processes between applications and services. In serverless and microservices architectures, messaging systems are often used to build asynchronous service-to-service communication. Dynatrace news. This is great!

Analytics 187

Analytics Systems DevOps Metrics 187

DZone

JANUARY 17, 2022

Thus, managing system processes and profiling is better off without it. With this in mind, you might need to create a script that goes through the system processes and provides a report when the script runs. Let’s face it: the mighty Task Manager isn’t a magic wand for all operations.

Systems 194

Systems Monitoring Testing Processing 194

The Netflix TechBlog

FEBRUARY 10, 2021

Stranger Things imagery showcasing the inspiration for the Hawkins Design System by Hawkins team member Joshua Godi ; with art contributions by Wiki Chaves Hawkins may be the name of a fictional town in Indiana, most widely known as the backdrop for one of Netflix’s most popular TV series “Stranger Things,” but the name is so much more.

Systems 239

Systems Design Engineering Development 239

Dynatrace

NOVEMBER 22, 2022

The nirvana state of system uptime at peak loads is known as “five-nines availability.” In its pursuit, IT teams hover over system performance dashboards hoping their preparations will deliver five nines—or even four nines—availability. How can IT teams deliver system availability under peak loads that will satisfy customers?

Infrastructure 183

Infrastructure Availability Systems Cloud 183

DZone

MARCH 14, 2023

In this article, we'll explore shuffle-sharding in-depth, discussing how it balances resources and improves overall system performance. Building a model and simulating different scenarios can help you develop a deeper understanding of how shuffle-sharding works and how it may impact your system's performance and availability.

Systems 130

Systems Performance Availability Development 130

Dynatrace

SEPTEMBER 8, 2022

Log management is an organization’s rules and policies for managing and enabling the creation, transmission, analysis, storage, and other tasks related to IT systems’ and applications’ log data. Distributed cloud systems are complex, dynamic, and difficult to manage without the proper tools. What is log management? Watch webinar now!

Cloud 186

Cloud Systems DevOps Monitoring 186

DZone

OCTOBER 17, 2022

Knowing anti-patterns and pitfalls is often more useful than knowing patterns when designing a system, so I decided to write this blog post about factors that I think will lead to producing unreliable systems from my experiences in designing (mostly) distributed enterprise applications.

Systems 100

Systems Design Processing Development 100

InfoQ

JANUARY 25, 2023

In this article, Rogerio Robetti discusses the challenges in auto-scaling stateful storage systems and proposes an opinionated design solution to automatically scale up (vertical) and scale out (horizontal) from a single node up to several nodes in a cluster with minimum configuration and interference of the operator. By Rogerio Robetti

Systems 145

Systems Design Storage Scalability 145

DZone

APRIL 22, 2020

Traditionally we use unit tests and integration tests that guarantee a system is production-ready. To better identify system vulnerabilities and improve resilience, Netflix invented Chaos Monkey , which injects various types of faults into the infrastructure and business systems. This is how Chaos Engineering began.

Systems 207

Systems Infrastructure Testing Engineering 207

All Things Distributed

SEPTEMBER 14, 2020

A great example of this approach to innovation and problem solving is the creation of the AWS Nitro System , the underlying platform for our EC2 instances. Now, with the Nitro System, we can offer the best price performance in the cloud, the most secure environment, and a faster pace of innovation.

AWS 212

AWS Virtualization Systems Hardware 212

DZone

JUNE 15, 2020

Yet, for all the importance that testing has in the SDLC, there is a misconception among many about the difference between a testing tool and a testing system. You'd be hard-pressed to find a software development professional who disagrees.

Testing Tools 264

Testing Tools Testing Systems Software 264

DZone

JUNE 18, 2020

May 2020, Applitools had the pleasure of hosting Tyler Krupicka from Intuit for an hour-long webinar discussing design systems and testability. At Intuit, Tyler works on the "Player/Design Systems" team, where he focuses on design systems.

Systems 130

Systems Design Software Software 130

High Scalability

APRIL 9, 2020

Google added another book into their excellent SRE series: Building Secure and Reliable Systems. Copy/pasting a few paragraphs: "In this book we talk generally about systems, which is a conceptual way of thinking about the groups of components that cooperate to perform some function. It's free to download, so don't be shy.

Google 200

Google Systems Code Best Practices 200

ACM Sigarch

DECEMBER 19, 2022

We look here at a Gedankenexperiment: move 16 bytes per cycle , addressing not just the CPU movement, but also the surrounding system design. If data movement were faster, more work could be done on the same processors. Thought Experiment. We will propose five new general-purpose instructions that are key to meeting this goal.

Cache 145

Cache Design Systems Code 145

Uber Engineering

MARCH 9, 2023

Uber’s configuration platform team talks about how they consolidated the infrastructure for multiple configuration systems into a unified, next-gen distribution platform, reducing CPU usage by an order of magnitude.

Systems 97

Systems Infrastructure 97

Smashing Magazine

JANUARY 3, 2022

Composition-Based Design System In Figma. Composition-Based Design System In Figma. Working as a designer on a design system for a large product has taught me how precious the time you spend on a single task/component is. Introducing “Composition” For Design Systems: Composable Content And Containers. Large preview ).

Systems 137

Systems Design Code Scalability 137

Dynatrace

JUNE 12, 2020

We’re continuously working to support the most popular operating systems with high quality OneAgent deployment options. Of course, it’s possible to run a legacy 32-bit application on a 64-bit operating system. We’re already seeing a rapid decrease in the usage of 32-bit operating systems among our customers.

Operating System 138

Operating System Monitoring Systems Servers 138

Dotcom-Montior

NOVEMBER 24, 2021

Web developers or administrators did not have to worry or even consider the complexity of distributed systems of today. Great, your system was ready to be deployed. Once the system was deployed, to ensure everything was running smoothly, it only took a couple of simple checks to verify. What is a Distributed System?

Monitoring 74

Monitoring Systems Servers Hardware 74

DZone

AUGUST 17, 2020

How do you test a design system? You got here because you either have a design system or know you need one. Marie Drake , Principal Test Automation Engineer at News UK , presented her webinar, " Roadmap To Testing A Design System ", where she discussed this topic in some detail.

Testing 135

Testing Systems Design Engineering 135

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. I've also been working on Systems Performance 2nd Edition, now that the [BPF book] is done. At LISA I also ran a BPF performance tools workshop with over 200 attendees.

Performance 141

Performance Systems Tuning Benchmarking 141

High Scalability

FEBRUARY 19, 2021

This means a system that is not merely available but is also engineered with extensive redundant measures to continue to work as its users expect. Fault tolerance The ability of a system to continue to be dependable (both available and reliable) in the presence of certain component or subsystem failures.

Engineering 208

Engineering Systems Scalability Availability 208

Particular Software

MAY 8, 2023

However, in a message-based system, we no longer have a single call stack. The problem Because message-driven systems are asynchronous and run in multiple processes, debugging is naturally more complex than in a single-process application. Remember that this information is sent to an external system, your observability backend.

Systems 52

Systems Azure C++ Code 52

Dynatrace

AUGUST 24, 2020

We’re pleased to announce that Dynatrace is among the first set of partners to offer support for AWS Distributor , a capability of AWS Systems Manager, that allows you to select from available popular third party agents to install and manage. What is AWS Systems Manager Distributor? How to configure AWS distributor to install OneAgent.

AWS 166

AWS Systems Monitoring Infrastructure 166

DZone

JANUARY 23, 2021

If you need to dynamically trace Linux process system calls, you might first consider strace. So are there any tools that excel at tracing system calls in a production environment? This blog post introduces perf and traceloop, two commonly used command-line tools, to help you trace system calls in a production environment.

Performance 146

Performance Systems Software Engineering Performance Testing 146

The Netflix TechBlog

MAY 4, 2023

Behind the scenes, a myriad of systems and services are involved in orchestrating the product experience. These backend systems are consistently being evolved and optimized to meet and exceed customer and product expectations. This technique facilitates validation on multiple fronts.

Traffic 350

Traffic Latency Testing Servers 350

Brendan Gregg

JULY 15, 2020

Eight years ago I wrote _Systems Performance: Enterprise and the Cloud_ (aka the "sysperf" book) on the performance of computing systems, and this year I'm excited to be releasing the second edition. A year ago I announced [BPF Performance Tools: Linux System and Application Observability].

Cloud 143

Cloud Performance Systems Architecture 143

Dynatrace

OCTOBER 28, 2020

As a PSM system administrator, you’ve relied on AppMon as a preconfigured APM tool for detecting, diagnosing, and repairing problems that impact the operational health of your Windchill application suite. The post It’s time to upgrade the PTC System Monitor (PSM)! Dynatrace news. appeared first on Dynatrace blog.

Monitoring 147

Monitoring Systems Infrastructure Cloud 147

Dynatrace

APRIL 24, 2019

For small deployments, it isn’t a problem however when scaling up to hundred or even thousands of systems things can become complicated. Even when all the systems are mapped correctly by Dynatrace, identifying these systems is a real challenge. Dynatrace will automatically group both systems.

Systems 124

Systems Processing Tuning C++ 124

Uber Engineering

SEPTEMBER 9, 2021

One such technology is called Schemaless , which enables the modeling of related entries in one single row of multiple columns, as well as … The post Jellyfish: Cost-Effective Data Tiering for Uber’s Largest Storage System appeared first on Uber Engineering Blog.

Storage 124

Storage Systems Engineering Technology 124

DZone

SEPTEMBER 22, 2022

Alluxio workers are responsible for managing local resources, and they store data as blocks. Users can allocate different storage tiers as the resources for Alluxio workers, including MEM/SSD/HDD, which are further composed of directories.

Code 246

Code Virtualization Storage Systems 246

All Things Distributed

SEPTEMBER 14, 2020

A great example of this approach to innovation and problem solving is the creation of the AWS Nitro System (Nitro System), the underlying platform for our EC2 instances. Now, with the Nitro System, we can offer the best price performance in the cloud, the most secure environment, and a faster pace of innovation.

AWS 90

AWS Virtualization Systems Hardware 90

Dynatrace

JULY 25, 2019

In this three-part blog series, we’ll share the following three common problem scenarios that you can easily solve by building an automated self-healing system with Dynatrace and xMatters Flow Designer: Process crash. To keep these tickets consistent and up-to-date, bi-directional integration with ticketing systems is paramount.

Systems 173

Systems DevOps Cloud Design 173

Testlodge

NOVEMBER 1, 2021

” Destructive testing is a method that uses the system in a way other than intended to make the software program deliberately fail. How the system responds is then analyzed. Other tools are automated that let the tester fuzz test the system using fault injection techniques. Data-Driven Tools. Automated Tools.

Testing 85

Testing Systems Software Software 85