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 353

Traffic Latency Cache Metrics 353

DZone

JULY 19, 2023

Through load testing , businesses may determine how well their system performs under typical and predicted peak loads, ensuring that it can withstand the demands of actual usage. We will discuss the concept of load testing in this blog article, as well as its significance and practical application to ensure optimum performance.

Testing 130

Testing Traffic Systems Performance 130

DZone

MAY 31, 2022

A website needs to be constantly tested and optimized to be in line with Google's web and SEO guidelines. As a result, it has an advantage over others in terms of visibility, brand image, and driving traffic. This article will learn about web performance testing and how Core Web Vitals plays a crucial and strategic part in it.

Performance Testing 244

Performance Testing Testing Performance Website Performance 244

Dynatrace

NOVEMBER 28, 2023

This step is crucial as this environment is used for the final validation and testing phase before the code is released into production. This can lead to a lack of insight into how the code will behave when exposed to heavy traffic. Furthermore, augmenting test coverage to mirror the scenarios encountered in production is imperative.

Traffic 266

Traffic Best Practices Strategy Engineering 266

DZone

DECEMBER 28, 2020

The system could work efficiently with a specific number of concurrent users; however, it may get dysfunctional with extra loads during peak traffic. Performances testing helps establish the scalability, stability, and speed of the software application. Confirming scalability, dependability, stability, and speed of the app is crucial.

Performance Testing 220

Performance Testing Testing Tools Testing Performance 220

DZone

MARCH 2, 2023

Testing is a best-case scenario to validate the system's correctness. The fun fact is – testing in production helps you test the code changes on live user traffic, catch the bugs early, and deliver a robust solution that increases customer satisfaction. But, it doesn't help you detect the root cause of the failure.

Testing 109

Testing Traffic Engineering Code 109

DZone

JANUARY 18, 2021

In this circumstance, rigorous testing of the application and the website becomes crucial. Website test is a testing method that is implemented for testing the web apps hosted on the website. It includes examining the application’s interface, as well as other functionalities.

Testing Tools 214

Testing Tools Testing Website Traffic 214

Dynatrace

APRIL 5, 2024

When the SLO status converges to an optimal value of 100%, and there’s substantial traffic (calls/min), BurnRate becomes more relevant for anomaly detection. Error budget burn rate = Error Rate / (1 – Target) Best practices in SLO configuration To detect if an entity is a good candidate for strong SLO, test your SLO.

Efficiency 230

Efficiency Traffic Tuning Metrics 230

Dynatrace

FEBRUARY 21, 2024

Quality gates after load/performance testing Teams can use quality gates to evaluate performance metrics. Before a new version of the application is deployed, the software is subject to a series of load tests that evaluate capacity and performance under a series of simulated traffic and application demands.

Speed 212

Speed Software Software Latency 212

DZone

JULY 18, 2023

They cannot skip testing a release for the sake of adhering to continuous delivery practices, can they? In canary deployments, the new version, called canary, is tested with limited live traffic at first. It makes sense for DevOps engineers and architects to perform canary deployments in their CI/CD workflows.

Virtualization 230

Virtualization Traffic DevOps Engineering 230

TechBeacon Testing

JULY 20, 2020

This year's Amazon Prime Day may be delayed (reportedly until August or September), but when it does arrive, it is certain to bring with it the usual flood of web traffic from hungry shoppers looking for killer deals.

Traffic 76

Traffic Performance Testing Engineering Testing 76

DZone

FEBRUARY 26, 2021

To ensure that users get high-performing software that works seamlessly under all load conditions, performance testing is necessary. This test helps to measure the speed, scalability, reliability, and stability of software under varying loads, thus it ensures stable performance. Today, let's learn more about this testing type in depth.

Performance Testing 122

Performance Testing Testing Performance Latency 122

The Netflix TechBlog

NOVEMBER 29, 2023

A vital aspect of such development is subjective testing with HDR encodes in order to generate training data. The pandemic, however, posed unique challenges in conducting a conventional in-lab subjective test with HDR encodes. 1) depicts the migration of traffic from fixed bitrates to DO encodes. The graphic below (Fig.

Open Source 252

Open Source Software Engineering Internet Internet 252

Dynatrace

MAY 17, 2023

Validation tasks are then extended left to cover performance testing and release validation in a pre-production environment. While the first guardian validates the traffic, the second guardian checks the business transactions generated during the observation period. The functionality is implemented via an automated workflow.

DevOps 192

DevOps Traffic Latency Best Practices 192

The Netflix TechBlog

NOVEMBER 2, 2020

How viewers are able to watch their favorite show on Netflix while the infrastructure self-recovers from a system failure By Manuel Correa , Arthur Gonigberg , and Daniel West Getting stuck in traffic is one of the most frustrating experiences for drivers around the world. Logs and background requests are examples of this type of traffic.

Traffic 252

Traffic Metrics Infrastructure Architecture 252

Dynatrace

JUNE 1, 2023

Traffic This SLO measures the amount of traffic or workload an application receives, either in terms of requests per second or data transfer rate. The traffic SLO targets the website’s ability to handle a high volume of transactional activity during periods of high demand. The Apdex score of 0.85

Latency 182

Latency Website Traffic Virtualization 182

Dynatrace

JUNE 1, 2023

Traffic The traffic SLO example measures the amount of traffic or workload an application receives, either in terms of requests per second or data transfer rate. The traffic SLO targets the website’s ability to handle a high volume of transactional activity during periods of high demand. The Apdex score of 0.85

Traffic 173

Traffic Latency Website Virtualization 173

Dynatrace

SEPTEMBER 28, 2021

Two important ways to improve this metric are to implement quality assurance testing throughout multiple development environments and to automate testing and DevOps processes. A change failure rate above 40% can indicate poor testing procedures, which means teams will need to make more changes than necessary, eroding efficiency.

DevOps 206

DevOps Metrics Traffic Efficiency 206

DZone

OCTOBER 11, 2022

Improving testing by using real traffic from production ( Hacker News). Simpler UI Testing with CasperJS ( Architects Zone – Architectural Design Patterns & Best Practices). Google Analytics Becomes A Robust Testing Platform With Content Experiments API ( Google Analytics Blog). Hacker News).

Java 244

Java Best Practices Google Analytics 244

Smashing Magazine

MARCH 2, 2021

The State Of Mobile And Why Mobile Web Testing Matters. The State Of Mobile And Why Mobile Web Testing Matters. These days, with mobile traffic accounting for over 50% of web traffic , it’s fair to assume that the very first encounter of your prospect customers with your brand will happen on a mobile device.

Mobile 134

Mobile Testing Website Benchmarking 134

Tim Kadlec

JANUARY 12, 2021

Client-side A/B testing has been a performance loving developer’s worst friend for years. From a convenience perspective, running client-side tests is significantly easier to do than server-side testing. With server-side testing, you need developer resources to create different experiments.

Testing 137

Testing Google Traffic Servers 137

Tim Kadlec

MAY 21, 2020

It was a great excuse for running a split test. By serving one version of the site with instant.page in place to some traffic, and a site without it to another, I could compare the performance of them both over the same timespan and see how it shakes out. All that was left was to see if the split testing was actually working.

Testing 128

Testing Traffic Tuning Metrics 128

Abhishek Tiwari

JULY 8, 2023

Traditional testing and monitoring practices have long been relied upon to achieve this goal. However, the line between testing and monitoring is becoming increasingly blurred with the emergence of synthetic monitoring. The term "synthetic" is used because it does not rely on traffic generated by real clients and end-users.

Monitoring 52

Monitoring Testing Artificial Intelligence Traffic 52

Dynatrace

FEBRUARY 12, 2024

Agencies isolate systems and encrypt network traffic flowing between and within them while testing enterprise applications internally and externally. Teams verify “anything and everything” that might attempt to gain access while enforcing least privilege.

Government 184

Government Analytics Network Traffic 184

Dynatrace

MAY 21, 2021

This becomes even more challenging when the application receives heavy traffic, because a single microservice might become overwhelmed if it receives too many requests too quickly. The Envoy proxies also collect and report telemetry on all traffic among the services in the mesh. Why do you need a service mesh?

Traffic 247

Traffic DevOps Infrastructure Network 247

DZone

NOVEMBER 21, 2019

Testing on Google Chrome is necessary for any app-designer. Currently, global Internet traffic counts to a whopping 4.3 Internet usage has constantly exploded in the past decade and continues to grow every single day. billion users.

Testing 100

Testing Internet Internet Google 100

Dynatrace

JULY 8, 2019

I’ve been speaking to customers over the last few months about our new cloud architecture for Synthetic testing locations and their confusion is clear. And the last thing you want to do with synthetic is introduce false positives (the bane of all synthetic testing) into the system, and yet this was happening too often.

Cloud 202

Cloud Hardware Testing Logistics 202

The Netflix TechBlog

NOVEMBER 9, 2022

A quick canary test was free of errors and showed lower latency, which is expected given that our standard canary setup routes an equal amount of traffic to both the baseline running on 4xl and the canary on 12xl. What’s worse, average latency degraded by more than 50%, with both CPU and latency patterns becoming more “choppy.”

Hardware 363

Hardware Cache Performance Latency 363

Dynatrace

APRIL 22, 2020

While most government agencies and commercial enterprises have digital services in place, the current volume of usage — including traffic to critical employment, health and retail/eCommerce services — has reached levels that many organizations have never seen before or tested against. So how do you know what to prepare for?

Traffic 208

Traffic Ecommerce Retail Government 208

Dynatrace

NOVEMBER 30, 2023

What was once an onslaught of consumer traffic between Black Friday and Cyber Monday has turned into a weeklong event, with most retailers offering deals well ahead of Black Friday. Below is a Dynatrace honeycomb chart depicting the performance of the synthetics tests tracked by the Dynatrace Business Insights team.

Retail 226

Retail Social Media Performance Benchmarking 226

Testlodge

APRIL 19, 2023

Integration testing involves taking units or modules and testing how they work once integrated with a system’s other units. When and How to Perform Integration Testing There are four levels of software testing: Unit testing , Integration testing, System Testing, and Acceptance testing.

Testing 68

Testing Programming Performance Testing Systems 68

CSS Wizardry

FEBRUARY 25, 2021

Google has a pretty tight grip on the tech industry: it makes by far the most popular browser with the best DevTools, and the most popular search engine, which means that web developers spend most of their time in Chrome, most of their visitors are in Chrome, and a lot of their search traffic will be coming from Google. Why This Is a Problem.

Network 225

Network Mobile Performance Traffic 225

Dynatrace

JANUARY 23, 2023

These include improving API traffic management and caching mechanisms to reduce server and network load, optimizing database queries, and adding additional compute resources, just to name some. While some of these are already done, such as adding additional compute, others require more development and testing.

Social Media 130

Social Media Cache Traffic Media 130

Dynatrace

JUNE 27, 2022

These development and testing practices ensure the performance of critical applications and resources to deliver loyalty-building user experiences. RUM, however, has some limitations, including the following: RUM requires traffic to be useful. For example, in e-commerce, you can validate and test checking out a shopping cart.

Best Practices 180

Best Practices Monitoring Wireless Traffic 180

Dynatrace

JUNE 15, 2021

This number was so low because the automatic traffic redirect was so fast it kept the impact so low. Those tests get executed from two locations (Paris and London) hosted by different cloud vendors (Azure & AWS). As a general best practice, Synthetic Tests are great to validate your core use cases are always working as expected.

AWS 195

AWS Traffic Architecture Azure 195

Dynatrace

JANUARY 4, 2024

Dynatrace makes sure that we continually test Davis AI to ensure repeatability and ability to deliver deterministic results. Davis AI uses multidimensional baselining to automatically detect anomalies in the response times and error rates of applications and predictive AI to detect abnormalities in application traffic and service load.

Artificial Intelligence 240

Artificial Intelligence Strategy Traffic Virtualization 240

The Netflix TechBlog

AUGUST 16, 2023

That’s a significant amount and certainly more than is necessary relative to the traffic on most clusters. More acutely, if a traffic spike occurs and Zuul instances scale up, it exponentially increases connections open to origins. There is effectively no churn of connections, even at peak traffic.

Traffic 170

Traffic Servers Google Metrics 170