Adrian Cockcroft

MARCH 17, 2020

Picture taken by Adrian March 17, 2020 A resilient system continues to operate successfully in the presence of failures. In the monitoring flows, the typical hazards are a little different to the control flows. Is the model of the controlled process looking at the right metrics and behaving safely? What Happens Next?

Healthcare 52

Healthcare Government Airlines Systems 52

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. Near-zero RPO and RTO—monitoring continues seamlessly and without data loss in failover scenarios.

Availability 244

Availability Hardware Latency Traffic 244

CSS - Tricks

MARCH 16, 2020

to run Google Lighthouse audits via the command line, save the reports they generate in JSON format and then compare them so web performance can be monitored as the website grows and develops. To mitigate this issue, we’ll replace any colons with underscores ( _ ), so a typical report filename will look like: 2020-01-31T18_18_12.648Z.json.

Google 82

Google Latency Website Metrics 82

Smashing Magazine

AUGUST 3, 2023

It was only in 2020, though, that Google shared its concept of Core Web Vitals and how it impacts SEO efforts. Google’s Core Web Vitals is a set of performance metrics that site owners can use to evaluate performance and diagnose performance issues. Core Web Vital metrics definitions. Bookaway site search. One of the key Next.js

Performance 74

Performance Cache Traffic Metrics 74

The Netflix TechBlog

NOVEMBER 2, 2020

Service throttling Zuul can sense when a back-end service is in trouble by monitoring the error rates and concurrent requests to that service. Those two metrics are approximate indicators of failures and latency. The key metrics used to trigger global throttling are CPU utilization, concurrent requests, and connection count.

Traffic 252

Traffic Metrics Infrastructure Architecture 252

The Morning Paper

FEBRUARY 6, 2020

arXiv 2020. On the Cloudburst design teams’ wish list: A running function’s ‘hot’ data should be kept physically nearby for low-latency access. A low-latency autoscaling KVS can serve as both global storage and a DHT-like overlay network. Cloudburst: stateful functions-as-a-service , Sreekanti et al.,

Lambda 98

Lambda Serverless Cache Latency 98

Smashing Magazine

MAY 20, 2020

2020-05-20T10:30:00+00:00. 2020-05-20T13:37:03+00:00. Which metrics should I use?” Which values of these metrics are acceptable?”. From my perspective, it’s a good idea to use the size of the library in kilobytes as a metric for the npm package. For the site, I would consider Time To First Byte (TTFB) as a metric.

Performance 98

Performance Metrics Best Practices Code 98

IO River

NOVEMBER 2, 2023

determining a business's value to its clients, the level of service it provides is often a key metric. July 2020, Twitter experienced a significant outage that lasted for several hours, rendering the platform inaccessible to millions of users worldwide.

Availability 52

Availability Social Media Traffic Games 52

IO River

NOVEMBER 2, 2023

determining a business's value to its clients, the level of service it provides is often a key metric. July 2020, Twitter experienced a significant outage that lasted for several hours, rendering the platform inaccessible to millions of users worldwide.

Availability 52

Availability Social Media Traffic Games 52

Smashing Magazine

MARCH 25, 2021

Performance budget, as used on performance monitoring tools, such as SpeedCurve. However, having a performance budget as a standalone metric might not be of much help. Anyone with a web presence would appreciate the relationship between the effect of various performance measures on business metrics. Large preview ).

Media 117

Media Performance Mobile Latency 117

Alex Russell

JULY 14, 2021

iOS gained browser support in late 2020 (a dozen years late) via an Entitlement. [4] This reduces friction and commensurately increases "engagement" metrics. [6]. Apps can also monitor user input, resulting DOM, and system auto-filled credentials. 4] Windows and other Desktop OSes have similar (if less tidy ) mechanisms.

Google 121

Google Mobile Engineering Internet 121

Smashing Magazine

JANUARY 6, 2020

Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. 2020-01-06T10:30:13+00:00. 2020-01-06T12:35:48+00:00. Getting Ready: Planning And Metrics. Testing And Monitoring. Getting Ready: Planning And Metrics. Vitaly Friedman.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 11, 2021

This guide has been kindly supported by our friends at LogRocket , a service that combines frontend performance monitoring , session replay, and product analytics to help you build better customer experiences. LogRocket tracks key metrics, incl. Getting Ready: Planning And Metrics. Vitaly Friedman. 2021-01-11T15:30:13+00:00.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

SEPTEMBER 29, 2021

Key user-centric metrics often depend on the size, number, layout, and loading priority of images on the page. Smaller file size directly impacts the Largest contentful Paint (LCP) metric for the page as image resources needed by the page get loaded faster. A tl;dr of recommendations can be found below. AVIF Images In The Browser.

Open Source 144

Open Source Speed Website Google 144