Tim Kadlec

JUNE 21, 2022

At #SmashingConf San Francisco , Robin Marx gave a presentation about HTTP/3. 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. Here are my notes. What and Why?

Network 64

Network Mobile Google Cache 64

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. I presented this analysis of response time distributions talk in 2016 — at Microxchg in Berlin ( video ). For high traffic systems, processing the individual response times for each request may be too much work.

Lambda 98

Lambda Latency Cache C++ 98

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 126

Infrastructure Metrics Architecture Efficiency 126

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. So what did $150USD fetch in 2019? Say hello to the Moto E6 ! " package.

Performance 124

Performance Network Cache Metrics 124

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

John McCalpin

APRIL 2, 2020

This was a keynote presentation at the “2nd International Workshop on Performance Modeling: Methods and Applications” (PMMA16), June 23, 2016, Frankfurt, Germany (in conjunction with ISC16 ). This data is from the 2007 presentation.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

Jos

JUNE 2, 2018

presented in Google IO 2018 ( source ) These tools make it easier to determine where we need to put emphasis to improve our sites. One could argue this is a metric-driven decision. How would you architecture a non-trivial size web project (client, server, databases, caching layer)? A screenshot of Lighthouse 3.0,

Performance 237

Performance Speed Google Media 237

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

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. There are six metrics used to create the overall performance score. In PageSpeed 5.0,

Google 71

Google Engineering Speed Mobile 71

Percona

JUNE 22, 2023

Load balancing : Traffic is distributed across multiple servers to prevent any one component from becoming overloaded. Load balancers can detect when a component is not responding and put traffic redirection in motion. Please note that these are presented as general best practices.

Availability 109

Availability Database Open Source Hardware 109

Dynatrace

SEPTEMBER 17, 2019

Instead of presenting you with a handful of random screenshots from our demo environment I reached out to Robert, a close friend of mine, who leads a development team with the current task to re-architect and re-platform their multi-tenant SaaS-based eCommerce platform. REDIS for caching. NGINX as an API Gateway. 3 Log Analytics.

AWS 127

AWS Monitoring Ecommerce Lambda 127

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

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

Smashing Magazine

MARCH 19, 2021

But we can’t really say just yet whether it had any impact on the business metrics — well, we’ll need to wait for a big book release to see that. Gael Metais suggested to more aggressively subset web fonts and look into caching issues with our AVIF files. Green Scores in Lighthouse on Mobile. New Online Workshops on Smashing.

Mobile 140

Mobile Design Cache Code 140

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

Jos

JUNE 2, 2018

presented in Google IO 2018 ( source ). 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. A screenshot of Lighthouse 3.0, Well, not so fast.

Performance 130

Performance Speed Google Media 130

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 187

Cache Architecture Metrics Java 187

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 186

Open Source Network Transportation Cache 186

All Things Distributed

JUNE 21, 2018

This doesn't mean relational databases do not provide utility in present-day development and are not available, scalable, or provide high performance. Zynga also uses ElastiCache (Memcached and Redis) in place of their self-managed equivalents for in-memory caching. The opposite is true.

Database 167

Database AWS Games Latency 167

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

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

Smashing Magazine

AUGUST 22, 2021

For web-page loading, this slow-start approach can also affect metrics such as the first contentful paint, because only a small amount of data (tens of to a few hundred KB) can be transferred in the first few round trips. In reality, these are actually TLS features that were already present in some form in TLS 1.2

Performance 105

Performance Network Latency Servers 105