The Netflix TechBlog

AUGUST 10, 2020

264/AVC Main profile family still represents a substantial portion of the members viewing hours and an even larger portion of the traffic. These are summarized below: Instead of relying on other objective metrics, such as PSNR†, VMAF is employed to guide optimization decisions. Yet, given its wide support, our H.264/AVC

Innovation 243

Innovation Traffic Network Efficiency 243

CSS Wizardry

SEPTEMBER 16, 2024

RTT data should be seen as an insight and not a metric. Note some of the counties in these URLs: this client has a truly international audience, and latency metrics are of great interest to me. Interestingly, latency only accounts for a small proportion of my overall TTFB metric. RTT isn’t a you-thing, it’s a them-thing.

Latency 225

Latency Cache Transportation Mobile 225

Alex Russell

MARCH 31, 2022

Browsers will cache tools popular among vocal, leading-edge developers. There's plenty of space for caching most popular frameworks. The best available proxy data also suggests that shared caches would have a minimal positive effect on performance. Browsers now understand the classic shared HTTP cache behaviour as a privacy bug.

Cache 89

Cache Government Traffic Network 89

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 becomes really important for cache solutions like Redis™. SSH Access to Machine.

Cloud 242

Cloud Azure AWS Database 242

The Netflix TechBlog

MARCH 7, 2024

Deployment: Cache To produce business value, all our Metaflow projects are deployed to work with other production systems. While the system relies on our internal caching infrastructure, you could follow the same pattern using services like Amazon ElasticCache or DynamoDB.

Systems 236

Systems Media Cache Open Source 236

Dynatrace

AUGUST 30, 2019

A well-established metric we provide is APDEX , which tell us how users are perceiving page load times (time to the first byte, page speed, speed index), errors (JavaScript errors, crashes,) and also factors in the overall user journey (each user interaction) including their environment (browser, geolocation, bandwidth).

Cache 202

Cache Database Architecture Government 202

The Netflix TechBlog

OCTOBER 16, 2019

Often the data is held in memory by consumers and used as a “total cache”, where it is accessed at runtime by client code and atomically swapped out under the hood. for example Open Connect Appliance cache configuration, supported device type IDs, supported payment method metadata, and A/B test configuration.

Cache 192

Cache Architecture Metrics Java 192

The Netflix TechBlog

OCTOBER 8, 2024

We do not use it for metrics, histograms, timers, or any such near-real time analytics use case. Handling Bursty Traffic : Managing significant traffic spikes during high-demand events, such as new content launches or regional failovers. Those use cases are well served by the Netflix Atlas telemetry system.

Latency 240

Latency Storage Traffic Tuning 240

Percona

AUGUST 8, 2023

Or worse yet, sometimes I get questions about regaining normal operations after a traffic increase caused performance destabilization. But we can discuss common bottlenecks, how to assess them, and have a better understanding as to why proactive monitoring is so important when it comes to responding to traffic growth.

Traffic 92

Traffic Cache Monitoring Database 92

Smashing Magazine

MAY 12, 2022

In particular, the collected measurements include the three Core Web Vitals metrics measured for each session. In recent years, these metrics have become the cornerstone of modern Web performance analysis: Largest Contentful Paint (LCP) , First Input Delay (FID) , Cumulative Layout Shift (CLS). Large preview ). Large preview ).

Google 130

Google Performance Website Mobile 130

Jos

JUNE 2, 2018

One could argue this is a metric-driven decision. When they dug into the data, they found that the reason load times had increased was that they got a lot more traffic from Africa after doing the optimizations. How would you architecture a non-trivial size web project (client, server, databases, caching layer)?

Performance 237

Performance Speed Google Media 237

Percona

JUNE 22, 2023

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. query cache: Disable (query_cache_size: 0, query_cache_type:OFF) innodb_adaptive_hash_index: Check adaptive hash index usage to determine its efficiency.

Performance 108

Performance Monitoring Traffic Database 108

The Netflix TechBlog

NOVEMBER 23, 2020

Introducing gnmi-gateway: a modular, distributed, and highly available service for modern network telemetry via OpenConfig and gNMI By: Colin McIntosh, Michael Costello Netflix runs its own content delivery network, Open Connect , which delivers all streaming traffic to our members.

Open Source 188

Open Source Network Transportation Cache 188

Dotcom-Montior

AUGUST 5, 2020

As an ad publisher, your revenue depends on two main factors: traffic to your site and ad optimization. A lot of the focus goes into the practice and processes of driving traffic to your site from an SEO perspective, but what if when visitors get to your site, they have a less than ideal experience?

Website 92

Website Speed Cache Traffic 92

All Things Distributed

NOVEMBER 26, 2013

Cross Region Read Replicas also enable you to serve read traffic for your global customer base from regions that are nearest to them. Cross Region Read Replicas also make it even easier for our global customers to scale database deployments to meet the performance demands of high-traffic, globally disperse applications.

Cloud 114

Cloud AWS Traffic Latency 114

Tim Kadlec

APRIL 10, 2023

I broke the percentages down by page rank (based on traffic to the site). As we increasingly focus our conversations of performance on how metrics that relate to the user experience, the divide between backend and frontend goes past murky and starts becoming problematic. First up, the mobile results. 1,001 - 10,000 12.5%

Performance 111

Performance Servers Mobile Metrics 111

Smashing Magazine

AUGUST 3, 2023

It increases our visibility and enables us to draw a steady stream of organic (or “free”) traffic to our site. While paid marketing strategies like Google Ads play a part in our approach as well, enhancing our organic traffic remains a major priority. The higher our organic traffic, the more profitable we become as a company.

Performance 75

Performance Cache Traffic Metrics 75

All Things Distributed

JUNE 21, 2018

In-memory: Financial services, Ecommerce, web, and mobile application have use cases such as leaderboards, session stores, and real-time analytics that require microsecond response times and can have large spikes in traffic coming at any time. Amazon ES is also a powerful, high-performance search engine for full-text search use cases.

Database 167

Database AWS Games Latency 167

The Netflix TechBlog

OCTOBER 18, 2019

The key insight was that by assuming a latent Gaussian Process (GP) prior on the key business metric actions like viral engagement, job applications, etc., And finally each new observation needs to update the policy, compute offline policy evaluation metrics and then push the policy back to production so it can generate new intents to treat.

Infrastructure 132

Infrastructure Metrics Architecture Efficiency 132

Alex Russell

MARCH 6, 2021

The scale of the effect can be deeply situational or hard to suss out without solid metrics. A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. The Moto G4 , for example. Don't pay a lot for an Android-shaped muffler.

Performance 127

Performance Network Mobile Metrics 127

Dynatrace

DECEMBER 15, 2020

Resolved IIS crash on RUM activity interactions (user caching is now disabled if UEM is enabled). Improved reliability when no traffic occurs for extended time or when the zRemote restarts. Container metrics are reported for Amazon ECS containers on hosts with Amazon Linux (v1). ONE-49694). ONE-45777). APM-262501). ONE-49572).

Operating System 109

Operating System Java Mobile Cache 109

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. Caching the base page/HTML is common, and it should have a positive impact on backend times. But what happens when it doesn't?

Servers 60

Servers Cache Retail Benchmarking 60

Dynatrace

SEPTEMBER 17, 2019

REDIS for caching. Thanks to PurePath, architects can validate how transactions flow from service-to-service and how traffic gets routed through service mashes (AWS App Mesh, Istio, Linkerd) or proxies. Having Dynatrace also looking at key EFS metrics gives them additional root cause information in case something goes wrong.

AWS 128

AWS Monitoring Ecommerce Lambda 128

Smashing Magazine

JULY 29, 2019

This metric is a little difficult to comprehend, so here’s an example: if the average cost of broadband packages in a country is $22, and the average download speed offered by the packages is 10 Mbps, then the cost ‘per megabit per month’ would be $2.20. For reference, the metric is $1.19 Let’s talk about caching. in the USA.

Cache 97

Cache Mobile Google Network 97

The Morning Paper

JUNE 25, 2019

A far memory data structure has: far data in far memory, containing the core content of the data structure data caches at clients algorithms for operations. Processor caches can help to hide local accesses too, but not remote accesses. Clients cache the entire tree, but not the hash tables. Refreshable vectors. A worked example.

Design 80

Design Cache Hardware Scalability 80

CSS - Tricks

JULY 25, 2019

Cache-Headers missing? Lighthouse records metrics from the browser, applies a scoring model to them, and presents an overall performance score. Guidelines for improvement are suggested based on how specific metrics score. During performance tests, Lighthouse records many metrics focused on what a user sees and experiences.

Google 72

Google Engineering Speed Mobile 72

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.

Scalability 164

Scalability Database Ecommerce Latency 164

Speed Curve

DECEMBER 16, 2024

INP replaced FID In the spring, Google made it official: Interaction to Next Paint replaced First Input Delay as the responsiveness metric in Core Web Vitals (the trifecta of performance metrics that are a key ingredient in Google's search ranking algorithm). Back in September, we gave the Vitals dashboard a complete refresh.

Cache 52

Cache Google Metrics Hardware 52

The Netflix TechBlog

OCTOBER 18, 2019

The key insight was that by assuming a latent Gaussian Process (GP) prior on the key business metric actions like viral engagement, job applications, etc., And finally each new observation needs to update the policy, compute offline policy evaluation metrics and then push the policy back to production so it can generate new intents to treat.

Infrastructure 100

Infrastructure Metrics Architecture Efficiency 100

Smashing Magazine

JUNE 1, 2022

They can also highlight very long redirection chains in your third-party traffic. Researchers and major companies have been publishing case studies for years , proving that slower page load experiences impact business metrics, including conversion rate, revenue, bounce rate, and more. Design Optimizations.

Website 133

Website Design Network Testing 133

Smashing Magazine

OCTOBER 31, 2023

But do you know how Lighthouse calculates performance metrics like First Contentful Paint (FCP), Total Blocking Time (TBT), and Cumulative Layout Shift (CLS)? Still, there’s nothing in there to tell us about the data Lighthouse is using to evaluate metrics. But it comes with caveats. So why use lab data at all?

Speed 100

Speed Google Website Metrics 100

Rigor

SEPTEMBER 3, 2019

It’s about ensuring that your front-end is also working perfectly, that your site can deliver a delightful experience to your users or customers, and that it is functional – even when it’s experiencing up to seven or more times the typical traffic load. Traffic patterns outside of normal [RUM or Analytics].

Website 74

Website Cache Traffic Ecommerce 74

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. This seems reasonable overhead for a real time algorithm that could be applied to histogram data as part of a metric collection pipeline. > > system.time(wait1 <- normalmixEM(waiting, mu=c(50,80), lambda=.5,

Lambda 98

Lambda Latency Cache C++ 98

Smashing Magazine

SEPTEMBER 6, 2021

This approach was touted to be better for fine-grained caching because each subresource could be cached individually and the full bundle didn’t need to be redownloaded if one of them changed. Note that there is an Apache Traffic Server implementation, though.). This is true, but only to a relatively limited extent.

Network 108

Network Servers Cache Traffic 108

Speed Curve

AUGUST 18, 2024

A common pattern is seeing metrics degrade during low traffic times due to the size of the sample, caching inefficiency (for example, cold CDN cache), and routine maintenance. In addition, we've added page views time series data to our Core Web Vitals time series charts.

Cache 52

Cache Traffic Testing Network 52

Tim Kadlec

JUNE 21, 2022

Scalemates.com flipped the switch to enable HTTP/3 and almost immediately HTTP/3 traffic rose to ~13% of all requests on the landing page, ~49% for all pages in total. The browser stores alt-svc info in alt-svc cache. Easy way to setup HTTP/3: All major CDN’s provide HTTP/3, often with the flip of a switch.

Network 65

Network Mobile Google Cache 65

Smashing Magazine

AUGUST 9, 2021

However, many other devices are sitting between the client and the server that also have their own TCP code on board (examples include firewalls, load balancers, routers, caching servers, proxies, etc.). For example, if the device is a firewall, it might be configured to block all traffic containing (unknown) extensions.

Transportation 145

Transportation Internet Internet Network 145