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.

Traffic 285

Traffic Metrics Systems Strategy 285

Tasktop

JUNE 28, 2022

Nowadays, frameworks like SAFe ® recommend that you use Flow Metrics to measure and improve efficiency, velocity, and predictability. If you like story points and want to keep story points around, the question becomes, “when is it appropriate to rely on story points, and when should we use Flow Metrics?” Definitions.

Metrics 52

Metrics Traffic Efficiency Design 52

Alex Russell

FEBRUARY 28, 2022

It's being reposted here for completeness, but if you care about web performance, make sure to check out the whole series and get subscribed to the RSS feed to avoid missing any of next year's posts. The predominant answer: a unified theory of web performance. What, in particular, is "web performance"? How do we do it?

Performance 110

Performance Latency Architecture Network 110

Speed Curve

MARCH 11, 2024

After years of development and testing, Google has added Interaction to Next Paint (INP) to its trifecta of Core Web Vitals – the performance metrics that are a key ingredient in its search ranking algorithm. INP replaces First Input Delay (FID) as the Vitals responsiveness metric. This is what the INP metric assesses."

Mobile 81

Mobile Google Metrics Monitoring 81

The Netflix TechBlog

OCTOBER 7, 2021

In contrast, a server application runs on servers which are typically identical and a routing abstraction can serve sampled traffic to new versions. Application version adoption over time for a staged rollout This chart represents a counter metric, which exhibits version adoption over the duration of a staged rollout.

Metrics 207

Metrics Mobile Testing Strategy 207

Rigor

JULY 11, 2019

When your website isn’t performing optimally, you risk not only your revenue but also your reputation as a trusted resource. Additionally, teams are measuring and tracking key business metrics – conversion rates, cart abandonment rates, customer lifetime value, revenue by traffic source, and so on.

Ecommerce 87

Ecommerce Metrics Website Mobile 87

The Netflix TechBlog

JULY 30, 2019

Adoption As of writing this blog, Conductor orchestrates 600+ workflow definitions owned by 50+ teams across Netflix. While we’re not (yet) actively measuring the nth percentiles, our production workloads speak for Conductor’s performance. Cassandra persistence module is a partial implementation.

Lambda 191

Lambda Media Open Source Metrics 191

Smashing Magazine

DECEMBER 19, 2021

Sometimes it’s easy enough to find the answer to that question and the site just needs to invest in performance. Sometimes though, it’s a little trickier and, despite thinking your site was great on the performance for some reason it still fails. And the “contentful” part of the name shows this metric is intended to ignore (e.g.

Google 143

Google Traffic Mobile Website 143

Speed Curve

FEBRUARY 5, 2024

That performance golden rule still holds true today. However, that pesky 20% on the back end can have a big impact on downstream metrics like First Contentful Paint (FCP), Largest Contentful Paint (LCP), and any other 'loading' metric you can think of. 80% of end-user response time is spent on the front end.

Servers 57

Servers Cache Retail Benchmarking 57

Apica

NOVEMBER 15, 2019

With the continued growth of applications being used in and out of an organization, getting a firm grasp on the performance of these devices and its impact on your IT environment is important. With this growth and added complexity, how are your legacy performance testing solutions keeping up? The short answer is that they aren’t.

Performance Testing 40

Performance Testing Testing Performance Games 40

The Netflix TechBlog

JUNE 14, 2023

This blog post will share broadly-applicable techniques (beyond GraphQL) we used to perform this migration. And we definitely couldn’t replay test non-functional requirements like caching and logging user interaction. So, we relied on higher-level metrics-based testing: AB Testing and Sticky Canaries.

Traffic 358

Traffic Latency Metrics Cache 358

Dynatrace

AUGUST 27, 2024

To help determine how customers can comply with DORA requirements, DORA’s articles can be classified in the following three categories: Definition : Describes terms and the scope of the act. After obtaining individual mappings between technical recommendations and DORA requirements, Dynatrace compliance experts perform a thorough review.

Best Practices 257

Best Practices Government DevOps Analytics 257

Percona

MARCH 7, 2019

I’ll show you how we approached the resolution of a MySQL performance issue and used Percona Monitoring and Management PMM to support troubleshooting. The customer had noticed a linear high CPU usage in one of their MySQL instances and was not able to figure out why as there was no much traffic hitting the app.

C++ 101

C++ Traffic Servers Monitoring 101

Smashing Magazine

AUGUST 3, 2023

How We Optimized Performance To Serve A Global Audience How We Optimized Performance To Serve A Global Audience Liran Cohen 2023-08-03T10:00:00+00:00 2023-08-03T13:06:00+00:00 I work for Bookaway , a digital travel brand. It increases our visibility and enables us to draw a steady stream of organic (or “free”) traffic to our site.

Performance 75

Performance Cache Traffic Metrics 75

CSS Wizardry

JULY 23, 2023

Google do strongly encourage you to focus on site speed for better performance in Search, but, if you don’t pass all relevant Core Web Vitals (and the applicable factors from the Page Experience report) they will not push you down the rankings. All Core Web Vitals data used to rank you is taken from actual Chrome-based traffic to your site.

Engineering 245

Engineering Google Speed Mobile 245

Dynatrace

MAY 28, 2020

In this blog, I will be going through a step-by-step guide on how to automate SRE-driven performance engineering. Keptn uses SLO definitions to automatically configure Dynatrace or Prometheus alerting rules. Step-by-step guide: SRE-driven performance analysis with Dynatrace. This is what this blog is all about.

Engineering 186

Engineering Performance Metrics Best Practices 186

Dynatrace

DECEMBER 9, 2020

The flip side of speeding up delivery, however, is that each software release comes with the risk of impacting your goals of availability, performance, or any business KPIs. Which metrics are relevant for your business, anyway? Modern observability tools provide many metrics, but which ones are really important for your business?

Metrics 147

Metrics Engineering Google Monitoring 147

Dynatrace

NOVEMBER 24, 2021

framework , the SNMP extensions are a bundle of everything that’s needed (DataSource configuration, a dashboard template, a unified analysis page template, topology definition, entity extraction rules, relevant metric definitions and more) to get going with monitoring. Accelerated troubleshooting with topology awareness.

Network 200

Network Infrastructure Virtualization Metrics 200

The Netflix TechBlog

JULY 26, 2021

Such a paradigm aspires to assist front-line operations personnel and stakeholders in “running the business”²; performing their tasks through means such as ad hoc analysis, decision-support, and tracking (of tasks, assets, schedules, etc). Genesis Data Source and Input definition example Genesis is a stateless CLI written in Node.js

Big Data 257

Big Data Government Analytics Processing 257

Smashing Magazine

DECEMBER 7, 2023

If you’re reading this before March 2024 and fire up your favorite performance monitoring tool, you’re going to to get a Core Web Vitals report like this one pulled from PageSpeed Insights: ( Large preview ) You’re likely used to seeing most of these metrics. That’s what this article is all about.

Traffic 97

Traffic Metrics Google Monitoring 97

Smashing Magazine

APRIL 19, 2021

Google has announced that from 1st May, they will start to consider “Page Experience” as part of Search ranking , as measured by a set of metrics called Core Web Vitals. The Core Web Vitals are a set of three metrics designed to measure the “core” experience of whether a website feels fast or slow to the users, and so gives a good experience.

Google 141

Google Metrics Mobile Analytics 141

Smashing Magazine

OCTOBER 24, 2023

The Fight For The Main Thread The Fight For The Main Thread Geoff Graham 2023-10-24T18:00:00+00:00 2023-10-24T22:02:26+00:00 This article is sponsored by SpeedCurve Performance work is one of those things, as they say, that ought to happen in development. But not everything about performance happens directly at the code level, right?

Google 93

Google Analytics Traffic Metrics 93

Smashing Magazine

AUGUST 10, 2023

In fact, there’s great tooling right under the hood of most browsers in DevTools that can do many things that a tried-and-true service like WebPageTest offers, complete with recommendations for improving specific metrics. Certain tools are designed for certain metrics with certain assumptions that produce certain results.

Speed 82

Speed Monitoring Testing Network 82

Alex Russell

MARCH 6, 2021

Back in 2016, I gave a talk outlining the causes and effects of the terrible performance of web apps built using popular tools on the fastest-growing device segment: low-end to mid-range Android phones. Poor performance has a compound effect on user expectations at an ecosystem level. Live by the link, die by the link.

Performance 127

Performance Network Metrics Cache 127

CSS - Tricks

JUNE 25, 2020

And it’s not just “I can’t use CSS grid because IE 11 has 1.42% of global usage still” stuff, it’s about measuring metrics that matter to your site, no matter what they are. Performance metrics are a big one. Synthetic information like this enters my mind when spending tons of time on performance.

Analytics 94

Analytics Google Metrics Performance Testing 94

Dynatrace

APRIL 30, 2019

You can read my blog supporting my session titled “ Performance as Code: Lets make it a Standard ” on the Neotys PAC blog. Introducing Pitometer: Metrics-based Deployment Validation in your CI/CD. The following shows how to evaluate a deployment score based on metrics from Prometheus and Dynatrace. Pitometer is a Node.js

Architecture 125

Architecture Open Source Azure Metrics 125

Percona

AUGUST 30, 2023

Oracle Recovery Manager (RMAN): This enables users of Oracle databases to perform full, incremental, and differential backups. Percona XtraBackup performs online non-blocking, tightly compressed, highly secure backups on transactional systems. In DR, load balancers route traffic to the secondary data center when a failover occurs.

Database 89

Database Hardware Open Source Strategy 89

Smashing Magazine

AUGUST 22, 2021

HTTP/3: Performance Improvements (Part 2). HTTP/3: Performance Improvements (Part 2). In this second part, we will zoom in on the performance improvements that QUIC and HTTP/3 bring to the table for web-page loading. HTTP/3 performance features ( current article ). Robin Marx. 2021-08-23T06:20:00+00:00.

Performance 107

Performance Network Latency Servers 107

Dotcom-Montior

NOVEMBER 24, 2021

By definition, a distributed system is any system that comprises of multiple components on variety of machines that work together to appear as a single, organized system. Although the definition may seem straightforward, in the real-world, a distributed system is one of the most complex environments to understand, manage, and monitor.

Systems 74

Systems Monitoring Hardware Network 74

SQL Performance

JANUARY 22, 2020

By their very definition, table-valued parameters are strongly-typed to a user-defined table type that must exist within the database where the call is being made. However, strongly-typed isn't really strictly "strongly-typed" as you would expect, as this article is going to demonstrate, and performance could be impacted as a result.

Servers 55

Servers Azure Hardware Network 55

Alex Russell

OCTOBER 22, 2017

TL;DR: performance budgets are an essential but under-appreciated part of product success and team health. Nobody is trying to do a poor job, and yet the results of a “completed” PWA project often require weeks or months of painstaking rework to deliver minimally acceptable performance. Partner meetings are illuminating.

Performance 72

Performance Benchmarking Network Mobile 72

Smashing Magazine

MARCH 7, 2022

In my last article , I suggested using the SaveData API to deliver a different, more performant, experience to users that expressed that desire. However, the above table is not actually representative of total traffic, and that’s another point to note about this data. Signals For Customizing Website User Experience. Barry Pollard.

Website 105

Website Media Mobile Network 105

Alex Russell

JULY 14, 2021

Engine diversity is essential, as it is the mechanism that causes competition to deliver better performance, capability, privacy, security, and user controls. Meanwhile, on Android, the #2 and #3 sources of web traffic do not respect browser choice. This reduces friction and commensurately increases "engagement" metrics. [6].

Google 129

Google Mobile Engineering Games 129

Smashing Magazine

AUGUST 9, 2021

Often they make it seem as if HTTP/3 is a revolution in performance, while it is really a more modest (yet still useful!) It was heralded as an amazing performance revolution, with exciting new features such as server push, parallel streams, and prioritization. HTTP/3 performance features ( coming up soon! ).

Transportation 145

Transportation Internet Internet Network 145

KeyCDN

OCTOBER 31, 2018

Thanks to its reliable performance, extensive documentation and dedicated user community, PHP is one of the preferred server-side scripting language of many web developers. Additionally, DebugBar can monitor network traffic, inspect CSS elements and evaluate your JavaScript code. Best PHP Performance Monitoring Tools 1.

Development 57

Development Open Source Java AWS 57

Smashing Magazine

SEPTEMBER 6, 2021

If after the previous two parts — HTTP/3 history and core concepts and HTTP/3 performance features — you’re convinced that starting to use the new protocols is a good idea (and you should be!), HTTP/3 performance features. Note that there is an Apache Traffic Server implementation, though.).

Network 107

Network Servers Cache Traffic 107

Smashing Magazine

JANUARY 11, 2021

Front-End Performance Checklist 2021. Front-End Performance Checklist 2021. This guide has been kindly supported by our friends at LogRocket , a service that combines frontend performance monitoring , session replay, and product analytics to help you build better customer experiences. LogRocket tracks key metrics, incl.

Performance 145

Performance Cache Media Metrics 145