The Netflix TechBlog

DECEMBER 3, 2022

The most commonly used one is dataflow project , which helps folks in managing their data pipeline repositories through creation, testing, deployment and few other activities. Workflow Definitions Below you can see a typical file structure of a sample workflow package written in SparkSQL. ??? backfill.sch.yaml ??? daily.sch.yaml ???

Best Practices 360

Best Practices Code Testing Data Engineering 360

DZone

JULY 20, 2020

Taking part in testing more than 50 projects we saw how tests can give confidence in the code base, begin to save time for the entire development team and help to comply with business requirements. For those who come from other ecosystems, let us first explain what the term “functional tests” means in Symfony.

Testing 178

Testing Code Development Performance Testing 178

Alex Podelko

SEPTEMBER 8, 2020

Some time ago Federico Toledo published Performance Testing with Open Source Tools- Busting The Myths. While Federico definitely has good points there, there is some truth in these myths too. I remember really liking the technical side of these tests. What load testing tools did you use? What is your business model?

Open Source 223

Open Source Performance Testing Testing Performance 223

DZone

JULY 19, 2021

The quality can be subjective, so different teams may use different definitions based on the context. Code can be considered good quality if it is clear, simple, well tested, bug-free, refactored, documented, and performant. Keeping good code quality is also crucial for developing safety-critical systems.

Code 278

Code Metrics Testing Systems 278

Dynatrace

MARCH 3, 2020

One way to apply improvements is transforming the way application performance engineering and testing is done. This involves new software delivery models, adapting to complex software architectures, and embracing automation for analysis and testing. Here is the definition of this model: ?. Performance-as-a-self-service .

Performance 314

Performance Education Innovation Software Architecture 314

The Netflix TechBlog

JUNE 14, 2023

The three strategies we will discuss today are AB Testing , Replay Testing, and Sticky Canaries. To launch Phase 1 safely, we used AB Testing. To launch Phase 2 safely, we used Replay Testing and Sticky Canaries. We knew we could test the same query with the same inputs and consistently expect the same results.

Traffic 355

Traffic Latency Metrics Cache 355

DZone

JUNE 18, 2020

To facilitate the development of robust, error-free code, Apex supports the creation and execution of unit tests. Unit tests are class methods that verify whether a particular piece of code is working properly. Unit test methods take no arguments, commit no data to the database, and send no emails.

Testing 147

Testing Database Code Development 147

Dynatrace

JANUARY 17, 2022

A new preview section enables you to test the definition iteratively against actual values before creating the SLO. On the Service-level objectives page, the Actions > Edit SLO entry has been renamed SLO definition. Removed seven-day preview from create/edit custom event for alerting pages.

Metrics 246

Metrics Monitoring Availability Testing 246

Dynatrace

JULY 22, 2022

Given this capability, you can now define user groups such as: Developer : Permission to deploy or test a service in a particular project that’s in development. Product Engineer or Release Manager: Permission to approve the release of applications into the hardening stage for load testing, or into production for end-user usage.

Cloud 246

Cloud DevOps Best Practices Engineering 246

Dynatrace

SEPTEMBER 4, 2020

First, let me take a moment to thank Klaus Enzenhofer, Technical Product Manager at Dynatrace, who challenged me to make SLI & SLO definition simpler so that it is more appealing to a non-deep technical user base. For that Keptn already offers integrations with JMeter and Neoload with other testing tool integrations in the works.

DevOps 326

DevOps Metrics Innovation Azure 326

The Netflix TechBlog

FEBRUARY 9, 2022

The important thing is that this business logic can be built in a separate repository and maintained independently from the workflow definition. ACID deployment : for every scheduler workflow definition change, we would like to have all the workflow assets bundled in an atomic, durable, isolated and consistent manner.

Storage 206

Storage Data Engineering Testing Code 206

Dynatrace

MARCH 31, 2020

By investigating these questions, we distilled these two pain points: Following definition of application detection rules, some users don’t see traffic from the correct URLs in the corresponding Dynatrace applications (i.e., Gain control over the setup and testing of your application detection rules. Prerequisites.

Traffic 246

Traffic Mobile Monitoring Design 246

Dynatrace

MAY 19, 2022

This helps SRE teams quickly mitigate issues by turning off poorly-performing features, enabling features for specific subsets of end-users, or performing side-by-side A/B feature testing. Feature flag solutions currently use proprietary SDKs with frameworks, definitions, and data/event types that are unique to their platforms.

Java 290

Java Cloud Code Technology 290

Dynatrace

MAY 12, 2022

The title size of a tile has been moved from the dashboard definition to the dashboard metadata definition and included in the advanced settings UI for dashboards. Test connection button for CloudFoundry settings and Kubernetes cluster settings pages is now disabled for users with missing `settings:write permissions`.

Tuning 246

Tuning Metrics Cloud Mobile 246

Dynatrace

JULY 16, 2021

Many of our users are performance engineers using Cloud Automation Quality Gates to automate the analysis of their performance and load tests – saving hours of analysis time for each test they run. Whether it’s used to automate your test analysis or fully integrated into your delivery pipeline, this blog will guide you through it!

DevOps 246

DevOps Open Source Cloud Azure 246

Dynatrace

APRIL 10, 2020

It was also interesting because the plugin – while definitely solving a good use case – wasn’t really used by our teams any longer. Our IAS team has also setup a Synthetic test to validate the performance of Jenkins and its different APIs our teams are using to automate our pipelines. Step #3 – Removing the offending plugin.

Java 332

Java Performance DevOps Engineering 332

Dynatrace

FEBRUARY 18, 2021

To improve the naming of our navigation menu entries, we will soon conduct A/B testing for one of the main entry points to the Dynatrace navigation menu. Definitely not. A/B testing. Therefore we want to test if the new terminology is easier to find for users and fulfills our assumptions and hypothesis.

Testing 246

Testing Java Tuning DevOps 246

Dynatrace

NOVEMBER 30, 2023

Below is a Dynatrace honeycomb chart depicting the performance of the synthetics tests tracked by the Dynatrace Business Insights team. These tests open the retail home pages from various locations across America on a consistent basis. This type of issue would definitely affect conversion rates on a retail site.

Retail 278

Retail Social Media Performance Benchmarking 278

The Netflix TechBlog

JULY 30, 2019

This allows us to proactively push changes to the open source version while ensuring that the changes are fully functional and well-tested. Adoption As of writing this blog, Conductor orchestrates 600+ workflow definitions owned by 50+ teams across Netflix. The ability to dynamically create and execute workflows removes this friction.

Lambda 190

Lambda Media Open Source Metrics 190

Dynatrace

JULY 15, 2024

As HTTP and browser monitors cover the application level of the ISO /OSI model , successful executions of synthetic tests indicate that availability and performance meet the expected thresholds of your entire technological stack. into NAM test definitions. Our script, available on GitHub , provides details.

Availability 246

Availability Network Monitoring Infrastructure 246

CSS Wizardry

AUGUST 14, 2024

A/B Testing and Experimentation blocking=render ’s application in client-side A/B testing is, for me, its most compelling use-case. Client-side A/B testing tools work by altering the DOM and presenting a variant of a component to a user. This is already happening and you don’t need blocking=render.

C++ 303

C++ Testing Tools Government Testing 303

Dynatrace

MARCH 8, 2021

With the monitoring flexibility that comes with Dynatrace, it’s impossible to test and describe all technologies, use cases, and possible scenarios. Based on the number of product ideas already submitted in the forums, we know that the above quote is definitely true! Ranks is definitely the most awaited form of gamification.

Innovation 246

Innovation Testing Monitoring Technology 246

Dynatrace

DECEMBER 10, 2021

For example, deploying, testing, validating, and releasing software are shared tasks across teams that differ mainly in the underlying tooling used for executing these tasks. Dynatrace Cloud Automation now enables you to implement process definitions that are tool agnostic. This is also the point of integration.

DevOps 246

DevOps Cloud Testing Tools Strategy 246

The Netflix TechBlog

JUNE 13, 2023

Migrating Critical Traffic At Scale with No Downtime — Part 2 Shyam Gala , Javier Fernandez-Ivern , Anup Rokkam Pratap , Devang Shah Picture yourself enthralled by the latest episode of your beloved Netflix series, delighting in an uninterrupted, high-definition streaming experience. This is where large-scale system migrations come into play.

Traffic 282

Traffic Metrics Systems Strategy 282

Dynatrace

AUGUST 16, 2019

As microservices and automation continue to drive API usage, most organizations have either already introduced, or plan to introduce, an API testing process. With Dynatrace Synthetic you can easily create API tests with synthetic monitors. Now we’re making it easier for you to test APIs that are secured by OAuth 2.0!

Monitoring 199

Monitoring Tuning Google Testing 199

Dynatrace

APRIL 10, 2023

But “the benefits are definitely worth the effort, provided you do it in a strategic way,” Bollampally said. ” Uninterrupted testing and multicloud observability Cluster monitoring also helped the company avoid performance issues during the A/B testing it conducted to evaluate the user experience.

Cloud 243

Cloud Ecommerce Performance Retail 243

DZone

FEBRUARY 27, 2021

But these are definitely ruled out for enterprise applications due to the complexity in development, maintainability, need for object orientation, and interoperability. Input The input will contain several test cases (not more than 10). Each test case is a single line with a number n, 0 <= n <= 1 000 000 000.

Java 214

Java C++ Benchmarking Programming 214

Dynatrace

JUNE 11, 2019

Ideally, QA teams use production data for better test definitions (based on real use cases) and better workload modeling for load testing (based on real-world load behavior). Organizations that don’t look at production data may test the wrong things and simulate the wrong performance tests. This is good news.

Innovation 245

Innovation Monitoring Metrics Mobile 245

Dynatrace

AUGUST 28, 2020

To summarize the textbook definition, which originates from engineering and control theory, observability is essentially the ability to understand what is happening inside of a system from the knowledge of its external outputs. So, what do I do?

IoT 237

IoT Infrastructure Monitoring Innovation 237

Dynatrace

MAY 28, 2020

Keptn uses SLO definitions to automatically configure Dynatrace or Prometheus alerting rules. After a new build gets deployed and automated tests executed, SLIs are evaluated against their SLOs and, depending on that result, a build is considered good (promoted) or bad (rolled back). “ This is what this blog is all about.

Engineering 270

Engineering Performance Metrics Best Practices 270

Dynatrace

JULY 30, 2021

The first hands-on session is easy to accomplish the 5-minute success challenge, but things heat up in our second session as we walk attendees through either Codifying the SLOs in YAML or using a Dashboard-based definition approach. This is where the dashboard-based quality gate definition comes in. Hands-on 2: Codify your SLOs.

Cloud 214

Cloud DevOps Azure Virtualization 214

Dynatrace

DECEMBER 9, 2020

Note : We will soon improve the drill-downs to Davis problems directly from existing SLO definitions so that SRE teams can benefit more from the Dynatrace Davis AI engine. Read more: Google’s definition of the term Site Reliability Engineering. Build your own Site Reliability Engineering dashboards.

Metrics 231

Metrics Engineering Google Monitoring 231

CSS Wizardry

NOVEMBER 9, 2018

This is definitely a bug in WebKit/Blink—missing quotes shouldn’t hide the @import ed stylesheet from the Preload Scanner. Test, test, test. Everything I have outlined above adheres to specs or known/expected behaviour, but, as always, test everything yourself. Test and measure.

Network 279

Network Performance Media Cache 279

Testsigma

MARCH 12, 2021

Robotic Process Automation and Test Automation are two confusing terms in testing processes. Similar to TDD and BDD processes, RPA and test automation seem like a single branch of the test segment which is common to be exchanged in communication during planning. What is Test Automation?

Artificial Intelligence 97

Artificial Intelligence Testing Energy Analytics 97

Dynatrace

SEPTEMBER 28, 2021

While DevOps is often referred to as “agile operations,” the widely quoted definition from Jez Humble, co-author of The DevOps Handbook, calls it “a cross-disciplinary community of practice dedicated to the study of building, evolving, and operating rapidly-changing resilient systems at scale.” Change failure rate.

DevOps 246

DevOps Metrics Traffic Efficiency 246

Dynatrace

MAY 3, 2021

The most forward-thinking teams want to take a “shift-left” approach to their security practices, engaging security practices and testing as early as possible in the software development life cycle. Many organizations realize their DevOps tools and practices do not sufficiently account for security.

Code 237

Code DevOps Speed Government 237

Dynatrace

OCTOBER 4, 2021

An application programming interface (API) is a set of definitions and protocols for building and integrating application software that enables your product to communicate with other products and services. API testing complements monitoring. This is done through testing. So what is API monitoring?

Monitoring 245

Monitoring Latency Metrics Availability 245