Brendan Gregg

FEBRUARY 28, 2023

TCP Extensions for Multipath Operation with Multiple Addresses,” [link] , Mar 2020 [Gregg 20] Brendan Gregg, “Systems Performance: Enterprise and the Cloud, Second Edition,” Addison-Wesley, 2020 [Hruska 20] Joel Hruska, “Intel Demos PCIe 5.0 Clone Disk],” [link] , 2020 [Moore 20] Samuel K. Ford, et al., “TCP Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

KeyCDN

NOVEMBER 4, 2021

You can quickly check the response headers using Chrome DevTools , a speed test tool , or a simple curl command like the one below: curl -I '[link] 200server: keycdn-enginedate: Thu, 04 Nov 2021 11:39:01 GMTcontent-type: image/x-iconlast-modified: Thu, 16 Jul 2020 07:06:27 GMTvary: Accept-Encodingetag: W/"5f0ffc73-1536"expires: Thu, 11 Nov (..)

Latency 111

Latency Tuning Cache Traffic 111

Percona

MAY 2, 2023

This blog was originally published in September 2020 and was updated in May 2023. Cons of logical backups As it reads all data, it can be slow and will require disk reads too for databases that are larger than the RAM available for the WT cache—the WT cache pressure increases, which slows down the performance.

Best Practices 52

Best Practices Database Storage Servers 52

Brendan Gregg

APRIL 14, 2022

my pandemic-abandoned desk (2020); office wall. Netflix has been the best job of my career so far, and I'll miss my colleagues and the culture. offer letter logo (2014). flame graphs (2014). eBPF tools (2014-2019). PMC analysis (2017). I joined Netflix in 2014, a company at the forefront of cloud computing with an attractive [work culture].

Java 145

Java Cloud Cache AWS 145

Dynatrace

DECEMBER 15, 2020

Rollout starts 15 December 2020. Resolved IIS crash on RUM activity interactions (user caching is now disabled if UEM is enabled). Vulnerability: Upgraded to OpenSSL 1.1.1i (fix for CVE-2020-1971). Dynatrace news. With this release, the oldest supported OneAgent versions are: Dynatrace ONE. Dynatrace ONE Premium. ONE-49694).

Operating System 110

Operating System Java Mobile Cache 110

The Morning Paper

FEBRUARY 6, 2020

arXiv 2020. Last week we looked at a function shipping solution to the problem; Cloudburst uses the more common data shipping to bring data to caches next to function runtimes (though you could also make a case that the scheduling algorithm placing function execution in locations where the data is cached a flavour of function-shipping too).

Lambda 98

Lambda Serverless Cache Latency 98

Official Blog - World Web Technology

AUGUST 27, 2023

The PHP 8 version launched in 2020 is the latest. Various techniques, such as caching and optimization, improve the website’s performance and speed. Furthermore, opcode caching allows developers to speed up PHP code execution. Not just websites, you can use PHP for graphical user interface development.

Development 98

Development Ecommerce Open Source Website 98

CSS - Tricks

DECEMBER 21, 2021

New HTTP standards for caching on the modern web — Tim Perry gets into two brand new (proposed) caching headers: Cache-Status and Targetted Cache-Control. CWVs were announced in May 2020 and then we were told by May 2021 they would become a factor in SEO. Have Core Web Vitals made the web faster?

Performance 61

Performance Cache Media Games 61

KeyCDN

NOVEMBER 29, 2022

You can quickly check the response headers using Chrome DevTools or a simple curl command like the one below: curl -I [link] 200server: keycdn-enginedate: Fri, 25 Nov 2022 09:05:47 GMTcontent-type: image/jpegcontent-length: 195025last-modified: Thu, 16 Jul 2020 07:06:27 GMTvary: Accept-Encodingetag: "5f0ffc73-2f9d1"expires: Fri, 02 Dec 2022 (..)

Latency 60

Latency Tuning Cache Traffic 60

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. It also opens up the possibility for more effective use of caching strategies, potentially enhancing load times further. The higher our organic traffic, the more profitable we become as a company. Bookaway site search.

Performance 74

Performance Cache Traffic Metrics 74

Percona

SEPTEMBER 1, 2023

This post was originally published in June 2020 and was updated in September 2023. Efficient memory management, including optimizing query caches and buffer pools, can help strike the right balance between memory consumption and query response times. Another highly beneficial caching method is key-value caching.

Tuning 52

Tuning Database Performance Hardware 52

Smashing Magazine

JANUARY 21, 2021

So by late 2020, things got a bit out of control, with yellowish-red Lighthouse scores slowly showing up across the board. In early 2020, we’ve started with the big refactoring of the CSS layout components. The performance distribution for Largest Contentful Paint in 2020. We had to fix that. That’s Where We Were.

Performance 145

Performance Cache Mobile Network 145

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. New metrics landed in Lighthouse v6 in early 2020. Large preview ).

Performance 145

Performance Cache Media Metrics 145

KeyCDN

JUNE 16, 2021

You can quickly check the response headers using Chrome DevTools , a speed test tool , or a simple curl command like the one below: curl -I '[link] 200server: keycdn-enginedate: Wed, 16 Jun 2021 22:06:30 GMTcontent-type: image/x-iconlast-modified: Thu, 16 Jul 2020 07:06:27 GMTvary: Accept-Encodingetag: W/"5f0ffc73-1536"expires: Wed, 23 Jun (..)

Tuning 52

Tuning Cache Network Speed 52

Dynatrace

OCTOBER 15, 2021

This occurs once data is safely stored within a local cache. The first beta version was then released in March 2020, and it continues to be the second most active CNCF project after Kubernetes. Ingestion is critical to gathering the data we care most about. There are two principal ways to go about this: Local ingestion.

Open Source 227

Open Source Metrics Cloud Transportation 227

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. twitter.com/slightlylate/status/1139684093602349056 455 06:18 AM · Feb 28, 2020. A silver lining on this dark cloud is that mobile JavaScript payload growth paused in 2020. How bad is it?

Performance 124

Performance Network Cache Metrics 124

MachMetrics

JUNE 30, 2021

Thanks to the awesome caching plugins available for WordPress will make your site much faster and make your pages feel lightweight when configured correctly. You will still be configuring your site caching and organize the assets in such a way that the page passes web vital tests + and loads a lot quicker. Enable caching.

Cache 78

Cache Speed Google Website 78

Smashing Magazine

MARCH 19, 2021

In the end of last year we’ve noticed that we’ve seen quite a drop in performance in 2020, so we rolled up our sleeves and got to work. Gael Metais suggested to more aggressively subset web fonts and look into caching issues with our AVIF files. Review Of The Year 2020. Green Scores in Lighthouse on Mobile. What Is TypeScript?

Mobile 140

Mobile Design Cache Code 140

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts. Here are the top ten tools you can run and present as a generic BPF observability dashboard, along with suggested visualizations: Tool Shows Visualization. execsnoop New processes (via exec(2)) table. opensnoop Files opened table. ext4slower Slow filesystem I/O table.

Latency 145

Latency Cache Energy Systems 145

MachMetrics

MAY 14, 2020

When we gave a complete overview of the state of the web in 2020 we challenged our readers to compare their own website metrics to the multiple metric averages. Since we published that article at the start of 2020, the median website has grown ~4% larger according to HTTP Archive. Compress and cache your website.

Website 52

Website Testing Speed Cache 52

Brendan Gregg

APRIL 14, 2022

offer letter logo (2014) flame graphs (2014) eBPF tools (2014-2019) PMC analysis (2017) my pandemic-abandoned desk (2020); office wall I joined Netflix in 2014, a company at the forefront of cloud computing with an attractive work culture. Netflix has been the best job of my career so far, and I'll miss my colleagues and the culture.

Java 52

Java Cache Cloud AWS 52

Smashing Magazine

JUNE 25, 2020

2020-06-25T12:30:00+00:00. 2020-06-25T15:34:35+00:00. Today, we’ll address storing and serving files for both single-server and scalable deployments while considering factors like compression, caching, and availability. Client-Side Caching. Django Highlights: Wrangling Static Assets And Media Files (Part 4). Philip Kiely.

Media 69

Media Cache Storage AWS 69

Smashing Magazine

NOVEMBER 22, 2021

A website’s performance can make or break its success, yet in August 2020, despite many improvements we had previously made, such as implementing Server-Side Rendering (SSR), the ratio of Wix websites with good Google Core Web Vitals (CWV) scores was only 4%. The results of some of these APIs are also cached in a CDN as appropriate.

Website 126

Website Performance Google Media 126

Percona

NOVEMBER 1, 2023

forked process: 25 2020-04-10T14:04:49.808+0000 I CONTROL [main] ** SERVER RESTARTED ** 2020-04-10T14:04:49.812+0000 I CONTROL [main] Automatically disabling TLS 1.0, In the example below, I will show how to set the WiredTiger cache. about to fork child process, waiting until server is ready for connections.

Scalability 59

Scalability Best Practices Servers Database 59

MachMetrics

DECEMBER 27, 2019

Obviously this means that there is a ton of work to be done going into 2020 for web performance. As we mentioned in our article Average Page Load Times for 2020 , mobile page speed is a huge deal going forward. TTFB is typically reduced via server-side optimizations, such as enabling caching and database indexes.

Performance 52

Performance Speed Website Mobile 52

CSS - Tricks

MARCH 29, 2021

You might also want to check out this article by Umar Hansa , who compiled a whole bunch of great DevTool features that released in 2020. It may not be critical data to know, but sometimes it helps to understand the caching strategy. I’m using Brave here, which is Chromium-based. Rendering panel. Other useful tools.

Code 110

Code Media Cache Energy 110

Smashing Magazine

NOVEMBER 2, 2021

But here are some recent PWA-related findings by Maximiliano Firtman regarding Chrome: The number of origins with PWAs grew 170% in 2020. However, at the end of 2020, about 1% of websites included a Service Worker, and 2.2% When working on the offline mode, choose the service worker in combo with cache API. What Does This Mean?

Code 74

Code Cache Retail Mobile 74

Dotcom-Montior

JUNE 25, 2020

Did you know that around 306 billion emails have been sent globally every day in 2020 and about 45 percent of all emails received are spam. Sometimes, even if the IP address has been removed from the DNS database, the cache still contains the address. Email servers tend to blacklist certain IDs as spam based on their content.

Monitoring 86

Monitoring Traffic Website Database 86

CSS Wizardry

MAY 19, 2020

It’s widely accepted that self-hosted fonts are the fastest option: same origin means reduced network negotiation, predictable URLs mean we can preload , self-hosted means we can set our own cache-control. pic.twitter.com/k6obyVZGZP — Harry Roberts (@csswizardry) 11 May, 2020. What else could I do to make Google Fonts fast ?

Google 364

Google Media Latency Metrics 364

Smashing Magazine

JULY 16, 2020

2020-07-16T11:00:00+00:00. 2020-07-16T11:35:57+00:00. Splitting code assists with the browser’s cache resources and with code that doesn’t change often. Methods Of Improving And Optimizing Performance In React Apps. Methods Of Improving And Optimizing Performance In React Apps. Shedrack Akintayo. Dynamic imports.

Performance 121

Performance Code Virtualization Processing 121

Smashing Magazine

JUNE 18, 2020

2020-06-18T10:30:00+00:00. 2020-06-18T11:06:06+00:00. Solving Common Cross-Platform Issues When Working With Flutter. Solving Common Cross-Platform Issues When Working With Flutter. Carmine Zaccagnino. I’ve seen a lot of confusion online regarding Web development with Flutter and, often, it’s sadly for the wrong reasons.

Storage 93

Storage Mobile Website Java 93

Smashing Magazine

FEBRUARY 3, 2022

Measuring the carbon footprint of the web isn’t an exact science, but a report by the BBC in 2020 estimates that all internet activity accounts for around 3.7% These numbers are based on first-page load — caching seems very efficient for subsequent page loads. of global emissions (similar to the airline industry), and rising.

Social Media 102

Social Media Media Website Airlines 102

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. We are planning to open source DBLog in 2020 and include additional documentation.

Database 197

Database Traffic Transportation Open Source 197

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. Upon receipt of a valid Alt-Svc header indicating HTTP/3 support, the browser will cache this and try to set up a QUIC connection from then on.

Network 105

Network Servers Cache Traffic 105

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. We are planning to open source DBLog in 2020 and include additional documentation.

Database 212

Database Traffic Transportation Open Source 212

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts 7. Here are the top ten tools you can run and present as a generic BPF observability dashboard, along with suggested visualizations: Tool Shows Visualization 1. execsnoop New processes (via exec(2)) table 2. opensnoop Files opened table 3. ext4slower Slow filesystem I/O table 4.

Open Source 40

Open Source Latency Cache Energy 40

Speed Curve

FEBRUARY 25, 2024

Guest profiles also start with empty caches, empty cookie stores, empty browser storage, etc. The examples were captured in Chrome Canary on a 2020 i5 MacBook Pro without CPU throttling enabled. These may get populated during testing, but we can clear them at any time via Application > Storage > Clear Site Data in DevTools.

Analytics 91

Analytics Processing Google Mobile 91