Dynatrace

JULY 5, 2022

Such insights include whether the system can effectively collect, analyze, and report this data. With greater visibility into systems’ states and a single source of analytical truth, teams can collaborate more efficiently. Greater system reliability and uptime improve user experiences. The ability to preempt outages.

Artificial Intelligence 298

Artificial Intelligence Cloud Innovation Strategy 298

The Netflix TechBlog

FEBRUARY 1, 2022

For many roles, you will be given a choice between a take-home coding exercise or a one-hour discussion with one of the engineers from the team. We recommend against interview coding practice puzzle-type exercises, as we don’t ask those types of questions. The problems you are asked to solve are related to the work of the team.

Engineering 211

Engineering Games Entertainment Innovation 211

DZone

NOVEMBER 9, 2021

nn> MonitoringnnWe (humans) are terrible at imagining all possible permutations of the system with billions and billions of possible states. You may think that you know how the system works. You may think that you know how the system works. In the best case, you know only how the system was designed to work.

Software 245

Software Software Code Design 245

Particular Software

SEPTEMBER 11, 2023

Migrating a message-based system from on-premises to the cloud is a colossal undertaking. If you search for “how to migrate to the cloud”, there are reams of articles that encourage you to understand your system, evaluate cloud providers, choose the right messaging service, and manage security and compliance.

Cloud 126

Cloud Systems Azure Airlines 126

The Netflix TechBlog

DECEMBER 23, 2020

By Fabio Kung , Sargun Dhillon , Andrew Spyker , Kyle , Rob Gulewich, Nabil Schear , Andrew Leung , Daniel Muino, and Manas Alekar As previously discussed on the Netflix Tech Blog, Titus is the Netflix container orchestration system. It runs a wide variety of workloads from various parts of the company?—?everything

Media 297

Media Metrics Systems Processing 297

The Morning Paper

MARCH 15, 2020

Understanding, detecting and localizing partial failures in large system software , Lou et al., Partial failures ( gray failures ) occur when some but not all of the functionalities of a system are broken. Here are the key findings: Partial failures appear throughout the release history of each system, 54% within the last three years.

Systems 98

Systems Software Software Programming 98

The Netflix TechBlog

OCTOBER 26, 2021

We then used simple thought exercises based on flipping coins to build intuition around false positives and related concepts such as statistical significance, p-values, and confidence intervals. In this post, we’ll do the same for false negatives and the related concept of statistical power.

Testing 213

Testing Metrics Latency Design 213

Dynatrace

DECEMBER 5, 2023

Do material incidents on “third-party systems” require disclosure? The mandate explains why this is the case: “A reasonable investor would [not] view a significant breach of a registrant’s data as immaterial merely because the data were housed on a third-party system ….

Best Practices 263

Best Practices Government C++ Education 263

Dynatrace

MARCH 14, 2022

As patient care continues to evolve, IT teams have accelerated this shift from legacy, on-premises systems to cloud technology to more build, test, and deploy software, and fuel healthcare innovation. That includes failures in parts of a system that occur at similar times and have a common root cause.

Healthcare 237

Healthcare Artificial Intelligence Innovation Strategy 237

All Things Distributed

MARCH 6, 2015

Grapevine was one of the first systems designed to be fully distributed. The origins of the system are described in Grapevine: An Exercise in Distributed Computing by researchers who all went on to become grandmasters in distributed computing: Andrew Birrell, Roy Levin, Roger Needham, and Mike Schroeder. 1, February 1984.'

Systems 76

Systems Design 76

Dynatrace

MAY 15, 2020

By virtue of the incredible volume, quality, scope (we actually go far beyond just application monitoring) and granularity of the data the platform provides, our customers have at their fingertips unparalleled insights about their systems, users, and so much more. On further examination you discover an abnormal system process has initiated.

Government 239

Government DevOps Infrastructure Network 239

Dynatrace

JUNE 1, 2023

It represents the percentage of time a system or service is expected to be accessible and functioning correctly. Response time Response time refers to the total time it takes for a system to process a request or complete an operation. This SLO enables a smooth and uninterrupted exercise-tracking experience.

Latency 189

Latency Website Traffic Virtualization 189

CSS Wizardry

OCTOBER 16, 2023

Its content is as follows: c-btn { background-color : #C0FFEE ; } Once our build system has completed, it will fingerprint the file and export it with a unique hash, or fingerprint , in its filename. This post was mostly an exercise in curiosity. Let’s say we have a simple source CSS file called button.css.

Cache 200

Cache C++ Servers Internet 200

Smashing Magazine

SEPTEMBER 2, 2021

On design systems, CSS/JS and UX. CSS Selectors Cheatsheet is an interactive exercise to test your understanding of CSS selectors. The first few are fairly easy but the exercises increase in difficulty as you get into more advanced selectors like lesser-used pseudo-classes. TypeScript Exercises. Grid Garden.

Development 145

Development Games Education Programming 145

Dynatrace

DECEMBER 10, 2020

During the recent pandemic, organizations that lack processes and systems to scale and adapt to remote workforces and increased online shopping are feeling the pressure even more. Company brands are now measured by the “app” and “app experience” and expect every application to be as fast as Google.

Strategy 190

Strategy Performance Logistics Monitoring 190

Dynatrace

APRIL 15, 2021

As a company that’s ethos is based on a points-based system for health, by doing exercise and being rewarded with vouchers such as cinema tickets, the pandemic made both impossible tasks to do. Vitality had to respond quickly to this change by signing up new partners and developing new ways of incorporating rewards.

Speed 168

Speed Media Monitoring Engineering 168

Dynatrace

JUNE 1, 2023

It represents the percentage of time a system or service is expected to be accessible and functioning correctly. Response time Response time refers to the total time it takes for a system to process a request or complete an operation. This SLO enables a smooth and uninterrupted exercise-tracking experience.

Traffic 173

Traffic Website Latency Virtualization 173

Dynatrace

NOVEMBER 11, 2022

The build system sends an automated notification to Dynatrace just before initiating a deployment on this VM. The build system adds valuable information, such as: The approver of this deployment and their contact details. Create a new VM for this exercise and install a Dynatrace OneAgent. Tag your host with demo: cpu_stress.

DevOps 193

DevOps C++ Serverless Processing 193

Scalegrid

APRIL 16, 2020

Use Follower Clusters keep two independent database systems (of the same type) in sync so you can analyze, optimize and test app performance for MySQL, PostgreSQL and MongoDB® database. The availability of a computer system is the percentage of time its services are up during a period of time. Expert Tip. Security Groups. No problem.

Cloud 242

Cloud Azure AWS Database 242

The Netflix TechBlog

MARCH 5, 2020

Each of these steps has the incident commander and incident participants moving through various systems and interfaces. Jumping between different tools, ensuring data is correct and in sync is a low-value exercise for an incident commander. Instead, we centralized on two common tools to manage the entire lifecycle.

Open Source 215

Open Source AWS Google Speed 215

The Netflix TechBlog

SEPTEMBER 8, 2020

Functional Testing Functional testing was the most straightforward of them all: a set of tests alongside each path exercised it against the old and new endpoints. With lots of guidance from other platform and backend teams, we took a 3-pronged approach to ensure correctness for each route migrated.

Latency 243

Latency Cache Java Traffic 243

Dynatrace

JUNE 8, 2021

In software we use the concept of Service Level Objectives (SLOs) to enable us to keep track of our system versus our goals, often shown in a dashboard – like below –, to help us to reach an objective or provide an excellent service for users. Usual exceptions raised by our system that is now considered to be normal by Davis.

Metrics 176

Metrics Tuning Programming Systems 176

Dynatrace

JUNE 27, 2022

However, not all user monitoring systems are created equal. For example, real-user monitoring metrics might reveal a user performance issue that you can then apply to synthetic testing to replicate the issue by exercising the same transaction across several different variables. What is real user monitoring? The bottom line?

Best Practices 186

Best Practices Monitoring Wireless Traffic 186

The Netflix TechBlog

SEPTEMBER 10, 2024

Sample system diagram for an Alexa voice command. Where aws ends and the internet begins is an exercise left to the reader. The other main use case was RENO, the Rapid Event Notification System mentioned above. Dynomite had great performance, but it required manual scaling as the system grew.

Latency 233

Latency Cache Tuning Efficiency 233

Dynatrace

APRIL 5, 2024

However, it’s essential to exercise caution: Limit the quantity of SLOs while ensuring they are well-defined and aligned with business and functional objectives. Conclusion An effective Service Level Objective (SLO) holds more value than numerous alerts, reducing unnecessary noise in monitoring systems.

Efficiency 237

Efficiency Traffic Tuning Metrics 237

Dynatrace

SEPTEMBER 30, 2021

Hosted and moderated by Amazon, AWS GameDay is a hands-on, collaborative, gamified learning exercise for applying AWS services and cloud skills to real-world scenarios. As an AWS Advanced Technology Partner , this was a great opportunity for Dynatrace developers to sharpen their AWS skills and pursue or up-level their Amazon certifications.

AWS 222

AWS Best Practices Cloud Analytics 222

Smashing Magazine

AUGUST 11, 2021

Live discussions and interactive exercises are at the very heart of every workshop, with group work, homework, reviews and live interaction with people around the world. All workshops sessions are broken down into 2.5h-segments segments across days, so you always have time to ask questions, share your screen and get immediate feedback.

Design 126

Design Ecommerce Systems 126

The Morning Paper

SEPTEMBER 24, 2019

50 ways to leak your data: an exploration of apps’ circumvention of the Android permissions system Reardon et al., Side-channels are typically an unintentional consequence of a complicated system. USENIX Security Symposium 2019. Each app was then executed on a physical mobile phone equipped with a custom OS and network monitor.

Systems 74

Systems Traffic Network Google 74

Dynatrace

APRIL 21, 2022

Once you have and understand this data, you can identify issues, find opportunities for improvement, and eliminate risks before you go through a costly migration exercise. To optimize your back-end systems, you can use the service flow view within Dynatrace to identify layers of application architecture.

Azure 201

Azure Monitoring Virtualization Metrics 201

Smashing Magazine

OCTOBER 13, 2021

You can always ask a question live , you can share your screen and get immediate feedback, and you can work on group exercises with people around the world. Live discussions and interactive exercises are at the very heart of every workshop, with group work, homework, reviews and live interaction with people around the world.

Design 89

Design Programming Testing Systems 89

The Netflix TechBlog

MAY 27, 2020

Reliability, formally speaking, is the ability of a system to function under stated conditions for a period of time. Put simply, reliability means a system should work and continue working. assisting the responding service owners with understanding what systems are contributing to the incident Liaison?—?communicating

Engineering 106

Engineering Innovation Systems Architecture 106

O'Reilly Software

FEBRUARY 28, 2018

Adrian Cockcroft outlines the architectural principles of chaos engineering and shares methods engineers can use to exercise failure modes in safety and business-critical systems Continue reading Developing a chaos architecture mindset.

Architecture 63

Architecture Development Engineering Systems 63

The Morning Paper

APRIL 16, 2019

Teaching rigorous distributed systems with efficient model checking Michael et al., It describes the labs environment, DSLabs , developed at the University of Washington to accompany a course in distributed systems. Enabling students to build running performant versions of all of those systems in the time available is one challenge.

Systems 43

Systems Efficiency Testing Design 43

Strategic Tech

NOVEMBER 24, 2020

It helps people to understand the complex systems they are working with. However, if nobody reads the documentation and it gets out of date quickly, it’s a tick-box exercise rather than a value creating one. designing systems that document themselves. Enterprise Architects are smart people.

Architecture 72

Architecture DevOps Technology Technology 72

Particular Software

APRIL 27, 2020

We’ve certainly been affected by this shift at Particular with the cancellation of our popular Advanced Distributed Systems Design (ADSD) course this year. We skipped a few sessions (the exercises), but in retrospect we should have watched them all I think. Q: How long did it take? We spent maybe 5 hours each day watching the videos.

Transportation 52

Transportation Systems Education Software Architecture 52

All Things Distributed

NOVEMBER 15, 2010

Werner Vogels weblog on building scalable and robust distributed systems. Now that our ability to generate higher and higher clock rates has stalled and CPU architectural improvements have shifted focus towards multiple cores, we see that it is becoming harder to efficiently use these computer systems. All Things Distributed.

AWS 127

AWS Programming Latency Architecture 127

All Things Distributed

OCTOBER 2, 2017

With these requirements in mind, and a willingness to question the status quo, a small group of distributed systems experts came together and designed a horizontally scalable distributed database that would scale out for both reads and writes to meet the long-term needs of our business. This was the genesis of the Amazon Dynamo database.

Internet 113

Internet Internet AWS Performance 113