The Netflix TechBlog

MAY 4, 2023

Replay Traffic Testing Replay traffic refers to production traffic that is cloned and forked over to a different path in the service call graph, allowing us to exercise new/updated systems in a manner that simulates actual production conditions. This approach has a handful of benefits.

Traffic 349

Traffic Latency Tuning Systems 349

High Scalability

DECEMBER 5, 2018

Vulnerability events can also have an event sample that contains detailed information about the request that exercised a security vulnerability. In both cases, these time series have some sort of ID, a timestamp, and a count.

Infrastructure 193

Infrastructure Metrics Engineering Development 193

DZone

AUGUST 14, 2019

In brief, automation is the key to adopting the complexity of these modern technologies and enabling organizations to actually exercise and implement innovations that can increase network agility.

Network 191

Network Innovation Hardware DevOps 191

Dynatrace

JANUARY 25, 2022

Attendees will have the same great Dynatrace experts teaching the sessions live via webcam (and we’d highly encourage you to turn on your webcam as well), the same virtual classroom to join and complete the hands-on exercises, and the same great content.

Performance 224

Performance Virtualization Education Analytics 224

The Netflix TechBlog

DECEMBER 3, 2019

The infrastructure should allow them to exercise their freedom as data scientists but it should provide enough guardrails and scaffolding, so they don’t have to worry about software architecture too much. Introducing Metaflow These observations motivated Metaflow, our human-centric framework for data science.

Open Source 239

Open Source AWS Infrastructure Energy 239

Dynatrace

APRIL 17, 2024

As expected, we had a wide range of coding abilities in each class, ranging from the advanced developer who finished building the app when we reached the second exercise to those who had recently started coding.

Development 190

Development Performance Airlines Healthcare 190

The Netflix TechBlog

OCTOBER 7, 2021

To build intuition, let’s run through a thought exercise. We then go through a thought exercise: given the observation, what values of the null hypothesis would lead to a decision not to reject, assuming we specify a 5% false positive rate? Would you be willing to conclude that the coin is unfair if 60 out of 100 flips were heads?

Testing 237

Testing Games Metrics Innovation 237

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

Smashing Magazine

SEPTEMBER 2, 2021

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. Image source: TypeScript Exercises ). Design Patterns Game.

Development 145

Development Games Education Programming 145

Dynatrace

MARCH 16, 2021

It has now become a parallel exercise in the same CLI. Doing this at the code level helps developers enforce the observability processes that support the services they’ll deploy, rather than jumping into Dynatrace as an after-thought to retroactively build out the reports they need. Step 2: Plan.

Code 245

Code Monitoring Best Practices Infrastructure 245

DZone

NOVEMBER 9, 2021

They are rerun(in the best case) and thus defeating the whole purpose of this exercise while spending tons and tons of time/money/energy on this).nn> They are rerun(in the best case) and thus defeating the whole purpose of this exercise while spending tons and tons of time/money/energy on this).nn> "}">I heard all kinds of answers.

Software 245

Software Software Code Design 245

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

Dynatrace

JULY 5, 2022

With better data intelligence across the software development lifecycle, individuals in every role can exercise more autonomy and experience greater job satisfaction. More reliable, context-based analysis enables teams to make better decisions, take more decisive action, and automate more functions. The ability to preempt outages.

Artificial Intelligence 298

Artificial Intelligence Cloud Innovation Strategy 298

DZone

MAY 19, 2024

These exercises are valuable learning and planning tools for every program. In contrast, a post-mortem occurs following the closing phase of the project, where an analysis of “what went well” and “lessons learned” is conducted. A mid-mortem is equally important as the other "mortems."

Programming 130

Programming Development 130

Dynatrace

APRIL 14, 2020

Across the two days, there were sixteen new sessions – delivered for the first time – based on content derived from lab exercises developed and delivered by working with Dynatrace experts and our Partner communicate to showcase Dynatrace’s newest features.

AWS 171

AWS Lambda Performance Infrastructure 171

DZone

SEPTEMBER 11, 2019

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. If we want to improve our confidence, we can add steps to exercise more of the code.

Programming 113

Programming Testing Code Performance 113

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. Fermentation process: Steve Amos, IT Experience Manager at Vitality spoke about how the health and life insurance market is now busier than ever.

Speed 168

Speed Media Monitoring Engineering 168

Dynatrace

DECEMBER 21, 2023

These are crucial exercises for maintaining a people-first organization powered by healthy and satisfied employees who are aligned with the organization’s vision, values, and overarching business objectives.

Artificial Intelligence 211

Artificial Intelligence Innovation Tuning Analytics 211

Dynatrace

JUNE 1, 2023

Fitness app : The fitness app should offer a response time of less than 500 milliseconds for exercise tracking and data recording. This SLO enables a smooth and uninterrupted exercise-tracking experience. Note : you might hear the term latency used instead of response time.

Latency 189

Latency Website Traffic Virtualization 189

Dynatrace

DECEMBER 5, 2023

Incorporate planned exercises and workshops to examine and enhance your organization’s readiness through feedback loops. Be sure to incorporate cybersecurity into every one of your organization’s strategies to ensure full coverage. Foster effective and continuous cross-functional communication about the SEC cybersecurity mandate and process.

Best Practices 263

Best Practices Government C++ Education 263

CSS Wizardry

OCTOBER 16, 2023

This post was mostly an exercise in curiosity. It’s unlikely that a year would ever be insufficient, and it’s also unlikely that any cache would store a file for that long anyway: browsers periodically empty their cache as part of their general housekeeping, so even files that have been stored for a year might not actually make it that long.

Cache 200

Cache C++ Servers Internet 200

Strategic Tech

JUNE 21, 2020

When we were designing the workshop, I said to Gien that I like the idea of a puzzle, and it would be great to have it large and always visible, but how can we do that when there are a number of exercises? In this exercise, teams break up the large domain into sub-domains. The ability to design exercises in Miro is out of this world.

Design 98

Design Logistics Transportation Architecture 98

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

FEBRUARY 22, 2022

In all, she has four moves named after her: two on floor exercises, one on the beam, and one on the vault. Changing the game: The Biles. Pushing the envelope for Simone Biles meant she had to create new boundaries—and innovate new moves. The first new move sprang from adversity.

Games 252

Games Social Media Media Innovation 252

Dynatrace

OCTOBER 16, 2020

So with my amazing art skills, I have updated the experience to be more like this; When the whole premise of Vitality is to reward for exercise, and the mechanism to do it, can sometimes fail through issues that are outside of their control, it can lead to a bad brand experience.

AWS 150

AWS Google Innovation 150

Randon ASCII

MARCH 20, 2019

Years ago I worked in the Xbox 360 group at Microsoft. We were thinking about releasing a new console, and we thought it would be nice if that console could run the games of the previous console. Emulation is always hard, but it is made more challenging when your corporate masters keep changing CPU types.

Games 48

Games Latency Software Engineering Programming 48

The Netflix TechBlog

MARCH 5, 2020

Jumping between different tools, ensuring data is correct and in sync is a low-value exercise for an incident commander. We want to make reporting incidents as frictionless as possible, giving users a straightforward path to engage the resources they need in a time of crisis. Slack for managing incident metadata (e.g.

Open Source 215

Open Source AWS Google Speed 215

Dynatrace

MARCH 14, 2022

To support its objectives, the company operates a digital platform that enables customers to earn points when they exercise or eat healthily. Another Dynatrace customer is a health and life insurance provider from the United Kingdom, whose core purpose is to make people healthier.

Healthcare 237

Healthcare Artificial Intelligence Innovation Strategy 237

Dynatrace

JUNE 1, 2023

Fitness app : The fitness app should offer a response time of less than 500 milliseconds for exercise tracking and data recording. This SLO enables a smooth and uninterrupted exercise-tracking experience. Note : you might hear the term latency used instead of response time.

Traffic 173

Traffic Website Latency Virtualization 173

Scalegrid

APRIL 16, 2020

This is especially apparent in the enterprise space, as these organizations have teams of database administrators managing their deployments and require the freedom to exercise their internal expertise over their clusters. Interested in BYOC, but don’t want SSH access? No problem.

Cloud 242

Cloud Azure AWS Database 242

Dynatrace

NOVEMBER 11, 2022

Create a new VM for this exercise and install a Dynatrace OneAgent. Demo: Add the human factor using the Dynatrace events API. Screenshots are great, but here’s how you can enrich problem reports by adding the human side of the equation. Tag your host with demo: cpu_stress.

DevOps 193

DevOps C++ Serverless Processing 193

Dynatrace

DECEMBER 10, 2020

We have heard, “let’s do some chaos engineering…” before exercising basic practices like load testing and proper system monitoring, both of which are required components of chaos engineering. Constantly reinventing wheels with a “Not Invented Here” bias. What are the key requirements to address these challenges?

Strategy 190

Strategy Performance Logistics Monitoring 190

Dynatrace

JUNE 27, 2022

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. Finally, combining RUM and synthetic monitoring data can make troubleshooting faster and easier. The bottom line?

Best Practices 186

Best Practices Monitoring Wireless Traffic 186

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. That said, the guiding thread, predominantly under the client’s control, remains the backend perspective. In other words, where the application code resides.

Efficiency 237

Efficiency Traffic Tuning Metrics 237

Dynatrace

MAY 15, 2020

PoCs are incredibly powerful as an exercise we do WITH our customers, rather than TO them. In the final use case, I would like to share with you a conversation I had during a recent Proof of Concept (PoC) with one of the military branches.

Government 239

Government DevOps Infrastructure Network 239

The Netflix TechBlog

DECEMBER 23, 2020

This, in turn, allows processes to exercise certain privileges without having any privileges in the init user namespace. Kernel subsystems can then proceed to call ns_capable with the specific user namespace that is tied to the resource.

Media 297

Media Metrics Systems Processing 297

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.

AWS 222

AWS Best Practices Cloud Analytics 222