The Netflix TechBlog

JUNE 14, 2023

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. To determine customer impact, we could compare various metrics such as error rates, latencies, and time to render. How does it work?

Traffic 353

Traffic Latency Cache Metrics 353

Dynatrace

MAY 16, 2019

Are you applying AI to the unique metrics and KPIs that matter most to the success of your digital business? Do you provide dashboards and analytics that combine technical and business metrics that are specific to your business? Dynatrace out-of-the-box metrics generally focus on availability, failure rate, and performance.

Metrics 116

Metrics Analytics Programming Monitoring 116

The Netflix TechBlog

AUGUST 13, 2020

A metric crossed a threshold. You’re half awake and wondering, “Is there really a problem or is this just an alert that needs tuning? Telltale learns what constitutes typical health for an application, no alert tuning required. Metrics are a key part of understanding application health. Client metrics and QoE changes.

Monitoring 210

Monitoring Tuning Traffic Metrics 210

Dynatrace

APRIL 21, 2022

To stay tuned, keep an eye on our release notes. You can create custom log metrics for smarter and faster troubleshooting, and you will be able to understand log data in the context of your full stack, including real user impacts. The display name is now required in metric metadata. General Availability (Build 1.239.178).

Azure 221

Azure Metrics AWS Monitoring 221

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 279

Traffic Metrics Systems Strategy 279

The Netflix TechBlog

AUGUST 1, 2022

Data Mesh Overview A New Definition Of Data Mesh Previously, we defined Data Mesh as a fully managed, streaming data pipeline product used for enabling Change Data Capture (CDC) use cases. Another high priority task for us is to make more common processing patterns available to our users. This article gives an overview of the system.

Processing 272

Processing Transportation Entertainment Tuning 272

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 154

Metrics Engineering Google Monitoring 154

Dynatrace

DECEMBER 2, 2021

To get a better handle on this, let’s start with some definitions. These can include business metrics, such as conversion rates, uptime, and availability; service metrics, such as application performance; or technical metrics, such as dependencies to third-party services, underlying CPU, and the cost of running a service.

Metrics 196

Metrics Best Practices DevOps Infrastructure 196

The Netflix TechBlog

JULY 26, 2021

From the moment a Netflix film or series is pitched and long before it becomes available on Netflix, it goes through many phases. Data connectivity across Netflix Studio and availability of Operational Reporting tools also incentivizes studio users to avoid forming data silos.

Big Data 253

Big Data Government Analytics Processing 253

The Netflix TechBlog

AUGUST 22, 2019

Once the instance was available, the engineer would use a remote administration tool like RDP to login to the instance to install software and customize settings. The configuration file, referenced scripts, and artifact dependency definitions all live in an internal git repository.

DevOps 207

DevOps AWS Tuning Infrastructure 207

Dynatrace

JULY 16, 2021

This week my colleague Michael Winkler announced the general availability of Cloud Automation quality gates , a new capability that aims to provide answer-driven release validation as part of your delivery process. That’s what Cloud Automation does: SLIs, SLOs, Monitoring Definition, Automation Sequences, Tests, Deployment Definitions, etc.

DevOps 245

DevOps Open Source Cloud Azure 245

Percona

OCTOBER 17, 2023

Many changes and new features are brought to the system, and as part of keeping in tune with the changes and how they can impact us, we go through the changes to better understand them. The dynamic allocation might have flaws, but it’s definitely a good addition. From that, this article is born.

Metrics 97

Metrics C++ Storage Database 97

Dynatrace

NOVEMBER 17, 2020

The seamless integration enables enrichment of your OpenTelemetry metrics and traces with insights from the Dynatrace Software Intelligence Platform. Well-defined metrics for your applications and microservices should also be at the heart of your technical analysis. Anomaly detection without manual threshold definition.

Analytics 159

Analytics Technology Technology Cloud 159

The Netflix TechBlog

MARCH 25, 2019

Building and Scaling Data Lineage at Netflix to Improve Data Infrastructure Reliability, and Efficiency By: Di Lin , Girish Lingappa , Jitender Aswani Imagine yourself in the role of a data-inspired decision maker staring at a metric on a dashboard about to make a critical business decision but pausing to ask a question?—?“Can

Infrastructure 219

Infrastructure Big Data Transportation Architecture 219

Apica

DECEMBER 12, 2022

If you were on a desert island and forced to bring only one service level objective of a successful application, you would absolutely want to keep tracking user journeys, leaving the rest of the metrics behind. If that is true, what is stopping organizations from truly testing user journeys? Variability and complexity. Let’s move past it.

Testing 52

Testing DevOps Monitoring Media 52

O'Reilly

JANUARY 17, 2023

You’ll try this with a few other algorithms, and their respective tuning parameters–maybe even break out TensorFlow to build a custom neural net along the way–and the winning model will be the one that heads to production. The second is the experienced ML professional who really knows how to build and tune models.

Tuning 128

Tuning Open Source AWS Software 128

The Morning Paper

MAY 21, 2019

We focus on a definition that draws from the following two principles: (1) the value of temporal locality, by classifying as cold a memory page that has not been accessed beyond a threshold of T seconds; (2) a proxy for the application effect of far memory, by measuring the rate of accesses to cold memory pages, called promotion rate.

Software 78

Software Software Google Hardware 78

KeyCDN

OCTOBER 31, 2018

Consequently, there are so many free and premium PHP tools available online that it’s difficult for developers to determine which ones are worthwhile. This enterprise IDE is available to students and teachers at no cost, so take advantage of the discount if you can. Below is a run down of a few useful PHP tools for developers.

Development 57

Development Open Source Java AWS 57

O'Reilly

OCTOBER 11, 2022

So we really can’t talk about automating any significant task without seeing it as a non-trivial data integration project: matching IDs, reconciling slightly different definitions of database columns, de-duping, named entity recognition , all of that fun stuff. The data available to our retail business is much more limited.

Games 114

Games Healthcare Processing Retail 114

Smashing Magazine

AUGUST 22, 2021

While a perfect understanding of these concepts is not needed for the rest of this post, having a common high-level definition would be good. Additionally, even if we knew the available physical bandwidth, that wouldn’t mean we could use all of it ourselves. More in-depth information is available. Congestion Control.

Performance 106

Performance Network Latency Servers 106

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. It definitely works on 4.14, if you can run that, with CPUs that support pcid (check /proc/cpuinfo). Much of my testing was on Linux 4.14.11 and 4.14.12 1024 nopti: 922336 1024 6.59

Performance 75

Performance Benchmarking Cache Tuning 75

Smashing Magazine

SEPTEMBER 6, 2021

As such, a micro-optimization is, again, how you probably need to fine-tune things on a low level to really benefit from it. I would personally recommend using Cloudflare or Fastly because they have been intimately involved in the standardization process and will have the most advanced and well-tuned implementations available.

Network 105

Network Servers Cache Traffic 105

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. It definitely works on 4.14, if you can run that, with CPUs that support pcid (check /proc/cpuinfo). Much of my testing was on Linux 4.14.11 and 4.14.12 1024 nopti: 922336 1024 6.59

Performance 40

Performance Benchmarking Cache Tuning 40

Smashing Magazine

AUGUST 9, 2021

ISPs and intermediate networks might block it because metrics such as average delays and packet loss percentages are no longer easily available, making it more difficult to detect and diagnose problems. This all means that QUIC will probably never be universally available, which we’ll discuss more in part 3 ( coming soon! ).

Transportation 145

Transportation Internet Internet Network 145

High Scalability

NOVEMBER 25, 2019

There are many unique things but the storage layer, event-based sync is definitely worth learning, here are more details on it Egnyte object store and Egnyte Canonical File System. Always be available: Have a service level circuit breaker and a circuit breaker by customer. What lessons have you learned? How Do You Manage Your System?

Architecture 52

Architecture Cache Azure Storage 52

SQL Server According to Bob

JANUARY 11, 2020

Many of these systems support I/O ordering with a stable media cache and subsequently combine and/or split I/O requests across available subsystem resources to complete the storing to physical media. For specific information on I/O tuning and balancing, you will find more details in the following document.

Servers 40

Servers Cache Media Hardware 40