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.

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Dynatrace

OCTOBER 16, 2023

Synthetic testing simulates real-user behaviors within an application or service to pinpoint potential problems. Here’s a look at why this testing matters, how it works, and what companies need to get the most from this approach. What is synthetic testing? RUM, meanwhile, requires actual users.

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Testing Best Practices Testing Tools Monitoring 246

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.

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Performance Testing Testing Tools Testing Performance 230

Dynatrace

NOVEMBER 20, 2019

Having released this functionality in an Early Adopter Release with OneAgent version 1.173 and Dynatrace version 1.174 back in August 2019, we’re now happy to announce the General Availability of OneAgent full-stack monitoring for Linux on the IBM Z platform, sometimes informally referred to as Z/Linux. Release details.

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Availability Hardware Java Tuning 43

Scalegrid

MAY 2, 2019

When deploying in production, it’s highly recommended to setup in a MongoDB replica set configuration so your data is geographically distributed for high availability. It is also recommended that SSL connections be enabled to encrypt the client-database traffic. Testing Failover Behavior.

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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.

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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.

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Traffic Best Practices Strategy Engineering 279

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?

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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.

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Dynatrace

JUNE 15, 2021

The subject line said: “Success Story: Major Issue in single AWS Frankfurt Availability Zone!” The problem started at 1:24PM PDT, with the services starting to become available again about 3 hours later. This number was so low because the automatic traffic redirect was so fast it kept the impact so low.

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Dynatrace

APRIL 16, 2020

With most employees now working from home, and the demand on e-commerce platforms hits an all-time high, applications and infrastructure are under intense pressure with new usage patterns that have never been planned for or tested against. SaaS vendor RUM functionality is available for free for new users through September 19, 2020.

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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.

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Dynatrace

JUNE 1, 2023

These organizations rely heavily on performance, availability, and user satisfaction to drive sales and retain customers. Availability Availability SLO quantifies the expected level of service availability over a specific time period. Availability is typically expressed in 9’s, such as 99.9%. or 99.99% of the time.

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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?

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Dynatrace

AUGUST 8, 2019

We’re happy to announce the Early Adopter Release of OneAgent full-stack monitoring for Linux on the IBM Z platform, sometimes informally referred to as Z/Linux (available with OneAgent version 1.173 and Dynatrace version 1.174). For details on available metrics, see our help page on host performance monitoring. Dynatrace news.

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Availability Hardware Java Tuning 34

Percona

JUNE 22, 2023

To make data count and to ensure cloud computing is unabated, companies and organizations must have highly available databases. This guide provides an overview of what high availability means, the components involved, how to measure high availability, and how to achieve it. How does high availability work?

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Dynatrace

SEPTEMBER 29, 2021

The time and effort saved with testing and deployment are a game-changer for DevOps. This opens the door to auto-scalable applications, which effortlessly matches the demands of rapidly growing and varying user traffic. Containers can be replicated or deleted on the fly to meet varying end-user traffic. What is Docker?

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DZone

OCTOBER 11, 2022

Making Google’s CalDAV and CardDAV APIs available for everyone ( Google Developers Blog). Improving testing by using real traffic from production ( Hacker News). Improving testing by using real traffic from production ( Hacker News). SAP to acquire Hybris to jumpstart its presence in e-commerce ( VentureBeat).

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The Netflix TechBlog

NOVEMBER 9, 2022

At Netflix, we periodically reevaluate our workloads to optimize utilization of available capacity. 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.

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Hardware Cache Performance Latency 363

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.

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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. Let’s assume we created a service-availability SLO, monitoring the request failure count against the overall request counts. What characterizes a weak SLO?

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Efficiency Traffic Tuning Metrics 264

Dynatrace

SEPTEMBER 30, 2021

Cloud migration is the process of transferring some or all your data, software, and operations to a cloud-based computing environment that offers unlimited scale and high availability. In case of a spike in traffic, you can automatically spin up more resources, often in a matter of seconds. Improved performance and availability.

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Cloud Traffic Best Practices Strategy 241

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.

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Percona

JUNE 12, 2023

When it comes to access to their applications, users demand instant, reliable, and secure interactions — and that means databases must be highly available. With database high availability (HA), services are largely uninterrupted, and end users are largely satisfied. The obvious answer is this: To achieve high availability.

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Architecture Availability Open Source Healthcare 124

Dynatrace

FEBRUARY 15, 2023

SREs use Service-Level Indicators (SLI) to see the complete picture of service availability, latency, performance, and capacity across various systems, especially revenue-critical systems. This is all available out-of-the-box with the default workflow template provided by Site Reliability Guardian.

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DevOps Latency Traffic Best Practices 246

Dynatrace

MARCH 25, 2020

Thomas has set up Dynatrace Real User Monitoring in a way for it to monitor internal and external traffic separately. Splitting traffic into two separate applications also allows you to: Enforce different SLAs for internal vs external. Example #2 ensuring DevOps tool chain availability at Dynatrace.

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Scalegrid

APRIL 16, 2020

Each of these models is suitable for production deployments and high traffic applications, and are available for all of our supported databases, including MySQL , PostgreSQL , Redis™ and MongoDB® database ( Greenplum® database coming soon). This can result in significant cost savings for high traffic applications. Expert Tip.

Cloud 242

Cloud Azure AWS Database 242

Dynatrace

DECEMBER 27, 2022

Stable, well-calibrated SLOs pave the way for teams to automate additional processes and testing throughout the software delivery lifecycle. First, it helps to understand that applications and all the services and infrastructure that support them generate telemetry data based on traffic from real users. Availability.

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Software Software Benchmarking Latency 306

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.

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Performance Testing Testing Performance Latency 127

Dynatrace

FEBRUARY 10, 2022

Static Application Security Testing (SAST) solutions are a traditional way of addressing this. WAFs protect the network perimeter and monitor, filter, or block HTTP traffic. Compared to intrusion detection systems (IDS/IPS), WAFs are focused on the application traffic. Unfortunately, they also introduce risk. How to get started.

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Traffic Benchmarking Innovation Java 246

The Netflix TechBlog

NOVEMBER 29, 2023

HDR was launched at Netflix in 2016 and the number of titles available in HDR has been growing ever since. 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.

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Open Source Software Engineering Internet Internet 256

Dynatrace

JUNE 1, 2023

These organizations rely heavily on performance, availability, and user satisfaction to drive sales and retain customers. Availability Availability SLO quantifies the expected level of service availability over a specific time period. Availability is typically expressed in 9’s, such as 99.9%. or 99.99% of the time.

Traffic 173

Traffic Website Latency Virtualization 173

The Netflix TechBlog

AUGUST 30, 2021

By Benson Ma , Alok Ahuja Introduction At Netflix, hundreds of different device types, from streaming sticks to smart TVs, are tested every day through automation to ensure that new software releases continue to deliver the quality of the Netflix experience that our customers enjoy. In this blog post, we will focus on the latter feature set.

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The Netflix TechBlog

NOVEMBER 3, 2022

In PACELC terms we choose PC/EC and have the same level of availability for writes of our previous system while improving our theoretical availability for reads. With traffic growth, a single leader node handling all request volume started becoming overloaded. A single request in the tests below consists of one query.

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Dynatrace

JUNE 10, 2022

In large organizations, it’s not uncommon to have hundreds of applications — each with its own specific infrastructure requirements based on architecture, function, traffic, and more. Test, test, test. Because IAC is code, it needs regular testing. IAC solves the issue of complex infrastructure environments.

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Best Practices Infrastructure Code Speed 264

Dynatrace

JUNE 28, 2022

With this approach, teams can scale testing for all environments, which reduces efforts in replicating, updating, and maintaining test scripts. The ability to scale testing as part of the software development lifecycle (SDLC) has proven difficult. No external tools or additional configurations are needed.

Monitoring 246

Monitoring Software Software DevOps 246

Dynatrace

DECEMBER 16, 2021

If that service is slow, failing, or not available at all it results in frustration mentioned in some of the comments on social media and the app store. It’s the same concept as Test Driven Development (TDD) where you start with tests that will fail until you finish implementing the code so tests will succeed.

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