The Netflix TechBlog

FEBRUARY 18, 2022

In this blog post, we will give an overview of the Rapid Event Notification System at Netflix and share some of the learnings we gained along the way. We thus assigned a priority to each use case and sharded event traffic by routing to priority-specific queues and the corresponding event processing clusters.

Systems 334

Systems Traffic Architecture Mobile 334

Dynatrace

MAY 19, 2022

In their new dashboard, they added dimensions for load, latency, and open problems for each component. This greatly reduced the number of metrics to manage and provided a more comprehensive picture of what was behind their primary reliability service-level objective. The “Four Golden Signals” include the following: Latency.

Automotive 277

Automotive Latency Architecture Azure 277

The Netflix TechBlog

MARCH 10, 2023

Existing data got updated to be backward compatible without impacting the existing running production traffic. Data Sharding strategy in elasticsearch is updated to provide low search latency (as described in blog post) Design of new Cassandra reverse indices to support different sets of queries.

Media 237

Media Traffic Processing Design 237

Dynatrace

JUNE 25, 2020

Dynatrace Managed is intrinsically highly available as it stores three copies of all events, user sessions, and metrics across its cluster nodes. The network latency between cluster nodes should be around 10 ms or less. Minimized cross-data center network traffic. Automatic recovery for outages for up to 72 hours.

Availability 253

Availability Hardware Latency Traffic 253

Dynatrace

APRIL 26, 2022

Fast, consistent application delivery creates a positive user experience that can ultimately drive customer loyalty and improve business metrics like conversion rate and user retention. It is proactive monitoring that simulates traffic with established test variables, including location, browser, network, and device type.

Monitoring 213

Monitoring Social Media IoT Metrics 213

The Netflix TechBlog

AUGUST 30, 2021

In this blog post, we will focus on the latter feature set. The challenge, then, is to be able to ingest and process these events in a scalable manner, i.e., scaling with the number of devices, which will be the focus of this blog post. In particular, the Kafka integration is the most relevant for this blog post.

Latency 213

Latency Traffic Transportation Hardware 213

The Netflix TechBlog

SEPTEMBER 8, 2020

Image taken from a previously published blog post As you can see, our code was just a part (#2 in the diagram) of this monolithic service. To prepare ourselves for a big change in the tech stack of our endpoint, we decided to track metrics around the time taken to respond to queries. Replay Testing Enter replay testing.

Latency 233

Latency Cache Java Traffic 233

Dynatrace

JUNE 27, 2022

RUM gathers information on a variety of performance metrics. Data collected on page load events, for example, can include navigation start (when performance begins to be measured), request start (right before the user makes a request from the server), and speed index metrics (measure page load speed). Real user monitoring limitations.

Best Practices 183

Best Practices Monitoring Wireless Traffic 183

The Netflix TechBlog

AUGUST 13, 2020

A metric crossed a threshold. Metrics are a key part of understanding application health. But sometimes you can have too many metrics, too many graphs, and too many dashboards. Telltale uses a variety of signals from multiple sources to assemble a constantly evolving model of the application’s health: Atlas time series metrics.

Monitoring 210

Monitoring Tuning Traffic Metrics 210

Dynatrace

JUNE 8, 2020

Dynatrace Mission Control collects the health monitoring observability metrics for both our Dynatrace SaaS as well as Dynatrace Managed customers. Metrics are provided for general host info like CPU usage and memory consumption, OneAgent traffic, and network latency. Enroll now. What’s next.

Software 166

Software Software Programming Metrics 166

Dynatrace

JULY 24, 2023

In this blog, we will dive into the transformative power of answer-driven automation. Observability data provides a treasure trove of performance, stability, and user experience metrics encompassing error rates, response times, and user engagement. Consider an event-driven automation system designed for incident management.

DevOps 228

DevOps Traffic Efficiency Servers 228

The Netflix TechBlog

SEPTEMBER 2, 2020

In an earlier blog post, we discussed Telltale , our health monitoring system. Deriving meaningful value from trace data alone can be challenging, as Cindy Sridharan articulated in this blog post. Edgar captures 100% of interesting traces , as opposed to sampling a small fixed percentage of traffic.

Latency 296

Latency Transportation Engineering Traffic 296

Percona

JUNE 22, 2023

In this blog, we will explore various MySQL KPIs that are basic and essential to track using monitoring tools like PMM. This includes metrics such as query execution time, the number of queries executed per second, and the utilization of query cache and adaptive hash index.

Performance 104

Performance Monitoring Traffic Database 104

The Netflix TechBlog

NOVEMBER 2, 2021

In particular, the VMAF metric lies at the core of improving the Netflix member’s streaming video quality. Cosmos offers several benefits as highlighted in the linked blog, such as separation of concerns, independent deployments, observability, rapid prototyping and productization. Assembly for two of the metrics (e.g.

Media 171

Media Innovation Metrics Latency 171

Dynatrace

JULY 6, 2020

Azure Traffic Manager. While the Azure overview page in Dynatrace has long featured monitoring data detected by OneAgent, with additional metrics pulled from Azure Monitor and topology information from Azure Resource Graph, the overview page now gives you quick access to the newly added services, which are listed under Supporting services.

Azure 151

Azure Cloud Big Data Virtualization 151

Speed Curve

FEBRUARY 5, 2024

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. Latency – How much time does it take to deliver a packet from A to B. That performance golden rule still holds true today.

Servers 57

Servers Cache Retail Benchmarking 57

The Netflix TechBlog

OCTOBER 19, 2020

In our previous blog post we introduced Edgar, our troubleshooting tool for streaming sessions. If we had an ID for each streaming session then distributed tracing could easily reconstruct session failure by providing service topology, retry and error tags, and latency measurements for all service calls.

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

Adrian Cockcroft

JANUARY 29, 2023

There is no way to model how much more traffic you can send to that system before it exceeds it’s SLA. Bill Kaiser of NewRelic published this blog in 2017 which goes some way towards what I’m talking about, but since then I have figured out a new way to interpret the data. Mu is the mean of each component, the latency.

Lambda 98

Lambda Latency Cache C++ 98

Dotcom-Montior

MAY 12, 2020

Modern web applications and pages, such as single-page applications, that put the user experience at its utmost priority are expected to be available 24/7, anywhere in the world, usable on any screen size, secure, flexible, scalable and be ready to meet traffic spikes on demand. Network latency. Network Latency. Connection time.

Monitoring 63

Monitoring Entertainment Hardware Latency 63

Dotcom-Montior

NOVEMBER 11, 2020

The primary challenge being not able to access the underlying infrastructure metrics. However, when the time comes for resources to be requested, there can be latency in the time it takes to for that code to start back up. Applications that are running continuously on a dedicated server aren’t as impacted by latency issues.

Serverless 57

Serverless Monitoring Lambda Latency 57

Dotcom-Montior

NOVEMBER 16, 2021

SLIs are the actual performance metrics of your services. For example, if your SLO states that your uptime must be 99.9%, the actual SLI must meet or exceed that performance metric in order meet that specific SLO. An agreement within the SLA that states specific metric, like uptime, response time, security, issue resolution, etc.

Monitoring 91

Monitoring Google DevOps Engineering 91

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 81

Speed Monitoring Testing Network 81

The Netflix TechBlog

JULY 26, 2021

Operational Reporting is a reporting paradigm specialized in covering high-resolution, low-latency data sets, serving detailed day-to-day activities¹ and processes of a business domain. Data Quality Data Mesh provides metrics and dashboards at both the processor and pipeline level for operational observability. Please stay tuned!

Big Data 253

Big Data Government Analytics Processing 253

All Things Distributed

JUNE 21, 2018

That learning is at the heart of this blog post—databases are built for a purpose and matching the use case with the database will help you write high-performance, scalable, and more functional applications faster. The purpose of DynamoDB is to provide consistent single-digit millisecond latency for any scale of workloads.

Database 167

Database AWS Games Latency 167

The Netflix TechBlog

NOVEMBER 12, 2019

Page Simulation for Better Offline Metrics at Netflix by David Gevorkyan , Mehmet Yilmaz , Ajinkya More , Gaurav Agrawal , Richard Wellington , Vivek Kaushal , Prasanna Padmanabhan , Justin Basilico At Netflix, we spend a lot of effort to make it easy for our members to find content they will love. Why Is This Hard?

Metrics 124

Metrics Government Systems Testing 124

Dotcom-Montior

NOVEMBER 24, 2021

This also includes latency, or the time it takes for data or a request to get through a network. It is also one of the four golden signals of monitoring, which also includes traffic, error, and saturation. The metrics measured could be monitoring HTTP (Hypertext Transfer Protocol) requests, response codes, user metrics, etc.

Systems 74

Systems Monitoring Hardware Network 74

The Netflix TechBlog

NOVEMBER 12, 2019

Page Simulation for Better Offline Metrics at Netflix by David Gevorkyan , Mehmet Yilmaz , Ajinkya More , Gaurav Agrawal , Richard Wellington , Vivek Kaushal , Prasanna Padmanabhan , Justin Basilico At Netflix, we spend a lot of effort to make it easy for our members to find content they will love. Why Is This Hard?

Metrics 100

Metrics Government Systems Testing 100

The Netflix TechBlog

NOVEMBER 12, 2019

Page Simulation for Better Offline Metrics at Netflix by David Gevorkyan , Mehmet Yilmaz , Ajinkya More , Gaurav Agrawal , Richard Wellington , Vivek Kaushal , Prasanna Padmanabhan , Justin Basilico At Netflix, we spend a lot of effort to make it easy for our members to find content they will love. Why Is This Hard?

Metrics 100

Metrics Government Systems Testing 100

HammerDB

OCTOBER 23, 2023

This blog post introduces the new “No stored procedures” option for MariaDB and MySQL introduced with HammerDB v4.9 With a simple example such as this, it would not necessarily be expected for the additional network traffic to be significant between the 2 approaches. On MySQL, we saw a 1.5X performance advantage.

Benchmarking 62

Benchmarking Database Network C++ 62

Adrian Cockcroft

APRIL 18, 2018

In reality, in any non-trivial installation, there are multiple tools collecting, storing and displaying overlapping sets of metrics from many types of systems and different levels of abstraction. What happens if you have several monitoring systems and they disagree on a critical metric like CPU load or Network throughput?

Monitoring 40

Monitoring Systems Virtualization Metrics 40

All Things Distributed

JANUARY 18, 2012

s web-based applications often encounter database scaling challenges when faced with growth in users, traffic, and data. Behind the scenes, Amazon DynamoDB automatically spreads the data and traffic for a table over a sufficient number of servers to meet the request capacity specified by the customer. Consistency. SimpleDBâ??s

Scalability 167

Scalability Database Ecommerce Latency 167

Smashing Magazine

JANUARY 11, 2021

LogRocket tracks key metrics, incl. Getting Ready: Planning And Metrics Performance culture, Core Web Vitals, performance profiles, CrUX, Lighthouse, FID, TTI, CLS, devices. Getting Ready: Planning And Metrics. DOM complete, time to first byte, first input delay, client CPU and memory usage. Get a free trial of LogRocket today.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

AUGUST 9, 2021

You may have read some blog posts or heard conference talks on this topic and think you know the answers. For example, if the device is a firewall, it might be configured to block all traffic containing (unknown) extensions. In the early days of the Internet, encrypting traffic was quite costly in terms of processing.

Transportation 145

Transportation Internet Internet Network 145

Dynatrace

AUGUST 5, 2019

In this blog, I want to give you a quick overview of what I put in this deck and hope it gives you enough ideas for your own migration project in order to complete it successfully! Resource consumption & traffic analysis. If you want to read up on migration strategies check out my blog on 6-R Migration Strategies.

Cloud 31

Cloud Traffic Database Network 31

Smashing Magazine

AUGUST 22, 2021

Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Latency can be roughly defined as the time it takes to send a packet from point A (say, the client) to point B (the server). Two-way latency is often called round-trip time (RTT).

Performance 106

Performance Network Latency Servers 106

Alex Russell

JULY 14, 2021

Meanwhile, on Android, the #2 and #3 sources of web traffic do not respect browser choice. I've got a long blog post brewing on this, but jumping to the end, an operable definition is: A browser is an application that can register with an OS to handle http and https navigations by default. "What, then, is a 'browser'?"

Google 121

Google Mobile Engineering Internet 121

Percona

JULY 1, 2023

In this blog, we will answer all of these important questions and provide a general overview comparing the two database services, Aurora vs RDS. It efficiently manages read and write operations, optimizes data access, and minimizes contention, resulting in high throughput and low latency to ensure that applications perform at their best.

AWS 52

AWS Database Serverless Storage 52