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 90

Traffic Cache Monitoring Database 90

The Netflix TechBlog

SEPTEMBER 8, 2020

This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI. For example, the artwork service is separate from the video metadata service, but we need the data from both in the detail key. Replay Testing Enter replay testing.

Latency 233

Latency Cache Java Traffic 233

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 57

Servers Cache Retail Benchmarking 57

Percona

JUNE 22, 2023

Let’s dive in and learn how (and what) to effectively monitor MySQL performance, along with examples from PMM, by understanding the critical KPIs to watch for. 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 106

Performance Monitoring Traffic Database 106

Scalegrid

AUGUST 30, 2019

Depending on how it is configured, Redis can act like a database, a cache or a message broker. Session Cache: Many websites leverage Redis Strings to create a session cache to speed up their website experience by caching HTML fragments or pages. Let’s look at an example: LPUSH list x # now the list is "x".

Cache 232

Cache Ecommerce Social Media Database 232

The Netflix TechBlog

AUGUST 10, 2020

AV1 being a recent example. 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.

Innovation 239

Innovation Traffic Network Efficiency 239

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 74

Performance Cache Traffic Metrics 74

The Netflix TechBlog

OCTOBER 16, 2019

One example displaying the need for dataset propagation: at any given time Netflix runs a very large number of A/B tests. For example, you could configure a topic to retain 10 versions or 10 days of versions. for example by region, application, or cluster. for example to train machine-learned models.

Cache 187

Cache Architecture Metrics Java 187

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. Another great example is the new Early Hints header.

Performance 111

Performance Servers Mobile Metrics 111

Smashing Magazine

MAY 12, 2022

For example, it could be because certain frameworks are more commonly used for building heavier websites. In particular, the collected measurements include the three Core Web Vitals metrics measured for each session. Starting in June 2021, these metrics have become a ranking factor for Google search. Large preview ).

Google 127

Google Performance Website Mobile 127

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 195

Cache Architecture Database Government 195

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). Let’s walk through an example: Database: MySQL. Cloud Provider: AWS. SSH Access to Machine.

Cloud 242

Cloud Azure AWS Database 242

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

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

Percona

SEPTEMBER 1, 2023

Key metrics such as CPU usage, memory usage, and disk I/O offer insights into how efficiently your database server operates. High CPU usage, for example, can indicate that your server is under heavy processing load, possibly due to poorly optimized queries or increased user activity.

Tuning 52

Tuning Database Performance Hardware 52

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. Some leaves are removed for brevity.

Open Source 186

Open Source Network Transportation Cache 186

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 97

Speed Google Website Metrics 97

Adrian Cockcroft

JANUARY 29, 2023

The common way to deal with this is to measure percentiles, and track the 90%, 99% response times for example. For example lets say you have a 99% within 2 seconds SLA, and your current 99%ile measured over one minute is 1 second. There is no way to model how much more traffic you can send to that system before it exceeds it’s SLA.

Lambda 98

Lambda Latency Cache C++ 98

The Netflix TechBlog

OCTOBER 18, 2019

For example, one set of experiments is focussed on personalizing our artwork assets to quickly select and leverage the “winning” images for a title we recommend to our members. 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.,

Infrastructure 126

Infrastructure Metrics Architecture Efficiency 126

The Netflix TechBlog

OCTOBER 18, 2019

For example, one set of experiments is focussed on personalizing our artwork assets to quickly select and leverage the “winning” images for a title we recommend to our members. 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.,

Infrastructure 100

Infrastructure Metrics Architecture Efficiency 100

Percona

JUNE 22, 2023

For example, in a server cluster, multiple servers are used to host the same application so that if one server fails, the application can continue to run on the other servers. Load balancing : Traffic is distributed across multiple servers to prevent any one component from becoming overloaded.

Availability 110

Availability Database Open Source Hardware 110

Smashing Magazine

JANUARY 6, 2020

Getting Ready: Planning And Metrics. Getting Ready: Planning And Metrics. You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Table Of Contents. Quick Wins.

Performance 145

Performance Cache Network Metrics 145

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 71

Google Engineering Speed Mobile 71

Smashing Magazine

JUNE 1, 2022

For example, users can install browser plugins to suggest coupon codes when they are shopping, to scan web pages for malware, to play games or message friends, or do any number of other things. They can also highlight very long redirection chains in your third-party traffic. Or will visitors find the new look and feel worth the wait?

Website 131

Website Design Network Best Practices 131

Smashing Magazine

JANUARY 7, 2019

Getting Ready: Planning And Metrics. Getting Ready: Planning And Metrics. You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Table Of Contents. Setting Realistic Goals. Defining The Environment.

Performance 103

Performance Cache Metrics Network 103

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. A worked example.

Design 80

Design Cache Hardware Scalability 80

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 124

Performance Network Cache Metrics 124

The Netflix TechBlog

OCTOBER 15, 2019

caching (Memcached etc.), For example, XA transactions block execution if the application process fails during the prepare phase; moreover, XA provides no deadlock detection and no support for optimistic concurrency-control schemes. For example, unclean leader election will result in consumer to potentially duplicate or lose events.

Transportation 192

Transportation Architecture Processing Storage 192

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 Ecommerce Traffic 74

All Things Distributed

JUNE 21, 2018

Airbnb is a great example of a customer building high-performance and scalable applications with Amazon Aurora. Tinder is one example of a customer that is using the flexible schema model of DynamoDB to achieve developer efficiency. Amazon DynamoDB Accelerator (DAX) is another example of a purpose-built data store.

Database 167

Database AWS Games Latency 167

Smashing Magazine

APRIL 11, 2022

Loading experience is crucial to the user’s first impression and overall usability, so Google defined Largest Contentful Paint (LCP) metric to measure how quickly the main content loads and is displayed to the user. It’s common knowledge that better website performance results in more conversions, more traffic, and better user experience.

Media 69

Media Tuning Metrics Google 69

Jos

JUNE 2, 2018

One could argue this is a metric-driven decision. This is difficult to prove because developers will say that “the experience” is what they are seeing on their computers using, for example, Google Chrome. How would you architecture a non-trivial size web project (client, server, databases, caching layer)? Well, not so fast.

Performance 237

Performance Speed Google Media 237

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. For example, when a disastrous earthquake hit Japan in March 2011, many customers in Japan came to AWS to take advantage of the multiple Availability Zones.

Cloud 145

Cloud AWS Traffic Latency 145

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 For example, HTML5 form validation ).

Cache 96

Cache Google Mobile Network 96

Smashing Magazine

JANUARY 21, 2021

Image source: Lighthouse Metrics ) ( Large preview ). Plus a service worker that caches all static assets and serves them for repeat views, along with cached versions of articles that a reader has already visited. CrUX generates an overview of performance distributions over time, with traffic collected from Chrome users.

Performance 145

Performance Cache Mobile Network 145

Smashing Magazine

MARCH 7, 2022

Approximately two-thirds of Indian mobile Chrome users of Smashing Magazine have this setting turned on, for example. However, the above table is not actually representative of total traffic, and that’s another point to note about this data. Example Output. Data Saver. Philippines. JavaScript API. Client Hint. devicePixelRatio.

Website 103

Website Media Mobile Network 103

Jos

JUNE 2, 2018

One could argue this is a metric-driven decision. This is difficult to prove because developers will say that “the experience” is what they are seeing on their computers using, for example, Google Chrome. Again, it’s easy to fake performance optimization by leaving out the bad metrics, blocking users who spoil the stats.

Performance 130

Performance Speed Google Media 130