CSS Wizardry

MAY 31, 2019

A classic example is jQuery, that we might link to like so: There are a number of perceived benefits to doing this, but my aim later in this article is to either debunk these claims, or show how other costs vastly outweigh them. Users might already have the file cached. It’s convenient. Copy and paste a line of HTML and you’re done.

Cache 274

Cache Latency Infrastructure Website 274

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. ecosystem was chosen for this new service deserves an article in and of itself. video titles, descriptions) could be aggressively cached and reused across multiple requests.

Latency 233

Latency Cache Java Traffic 233

The Netflix TechBlog

MARCH 7, 2023

But we cannot search or present low latency retrievals from files Etc. We refer the reader to our previous blog article for details. We store all OperationIDs which are in STARTED state in a distributed cache (EVCache) for fast access during searches. This is obviously very expensive. Write algo runs into files.

Media 264

Media Latency Architecture Database 264

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Or even on a plane. Ford, et al., “TCP

Performance 110

Performance Latency Cache Virtualization 110

Speed Curve

FEBRUARY 5, 2024

Caching the base page/HTML is common, and it should have a positive impact on backend times. Key things to understand from your CDN Cache Hit/Cache Miss – Was the resource served from the edge, or did the request have to go to origin? Latency – How much time does it take to deliver a packet from A to B.

Servers 57

Servers Cache Retail Benchmarking 57

ACM Sigarch

MAY 31, 2023

This article lays out the ideas and discussions shared at the workshop. There are three common mechanisms to access remote memory: modifying applications, modifying virtual memory, and hardware-level cache coherence support. even lowered the latency by introducing a multi-headed device that collapses switches and memory controllers.

Latency 52

Latency Hardware Cache Architecture 52

The Netflix TechBlog

JULY 21, 2022

Problem Statement The purpose of this article is to give insights into analyzing and predicting “out of memory” or OOM kills on the Netflix App. Some features (as an example) include Device Type ID, SDK Version, Buffer Sizes, Cache Capacities, UI resolution, Chipset Manufacturer and Brand. of the time (False Positives).

Big Data 179

Big Data Cache Engineering Data Engineering 179

Smashing Magazine

SEPTEMBER 28, 2022

Active Memory Caching. When you want to get data that you already had quickly, you need to do caching — caching stores data that a user recently retrieved. Caching partially stores your data and is not used as permanent storage. Caching partially stores your data and is not used as permanent storage.

Cache 125

Cache Performance Servers Social Media 125

Smashing Magazine

MAY 16, 2022

For this article, that’s all we’ll need to start exposing the value and leave other more specific articles to go deeper. There are a handful of different entry subtypes but, for the scope of this article, we will be concerned with the PerformanceResourceTiming and PerformanceNavigationTiming subtypes. More after jump!

Servers 92

Servers Monitoring Cache Network 92

Smashing Magazine

AUGUST 3, 2023

While dynamic serving provides simplicity in implementation, it imposes significant time costs due to the computational resources required to generate the pages and the latency involved in serving these pages to users at distant locations. The shorter the TTFB, the better the perceived speed of the site from the user’s perspective.

Performance 74

Performance Cache Traffic Metrics 74

CSS - Tricks

APRIL 1, 2021

In that spirit, what we’re looking at in this article is focused more on the incremental wins and less on providing an exhaustive list or checklist of performance strategies. I’m going to audit the performance of my slow site before and after the things we tackle in this article. Compressing, minifying and caching assets.

Cache 92

Cache Social Media Media Website 92

Brendan Gregg

AUGUST 29, 2021

Reads usually have apps waiting on them; writes may not (write-back caching). biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0. This is a 64-Gbyte memory system, and 48 Gbytes is in the page cache.

Cache 105

Cache C++ AWS Latency 105

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Or even on a plane. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

KeyCDN

FEBRUARY 4, 2021

Oddly enough we encountered this error to a third party website while writing this article. ISPs do cache DNS however which means if your first provider goes down it will still try to query the first DNS server for a period of time before querying for the second one. So DNS services definitely go down!

Cache 134

Cache Website Internet Internet 134

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. Largest Contentful Paint ( LCP ) < 2.5 considerations.

Performance 145

Performance Cache Media Metrics 145

Brendan Gregg

AUGUST 18, 2019

Originally posted at https:/opensource.com/article/19/8/introduction-bpftrace. For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. For smaller environments, it can be of more use helping eliminate latency outliers. 1 /* 2 * biolatency.bt

Latency 68

Latency C++ Cache Programming 68

Smashing Magazine

OCTOBER 31, 2023

Answering Common Questions About Interpreting Page Speed Reports Answering Common Questions About Interpreting Page Speed Reports Geoff Graham 2023-10-31T16:00:00+00:00 2023-10-31T17:06:18+00:00 This article is sponsored by DebugBear Running a performance check on your site isn’t too terribly difficult. That’s what this article is about.

Speed 97

Speed Google Website Metrics 97

CSS - Tricks

JULY 25, 2019

This article is from my friend Ben who runs Calibre , a tool for monitoring the performance of websites. In this article, we uncover how PageSpeed calculates it’s critical speed score. Cache-Headers missing? Estimated Input Latency. Estimated Input Latency. After that, it’ll be mitigated by cache.

Google 71

Google Engineering Speed Mobile 71

Percona

SEPTEMBER 1, 2023

This reduction in latency ensures that applications and websites provide a more rapid and responsive user experience. Efficient memory management, including optimizing query caches and buffer pools, can help strike the right balance between memory consumption and query response times.

Tuning 52

Tuning Database Performance Hardware 52

SQL Performance

APRIL 27, 2020

Hyperscale achieves high performance from each compute node having SSD-based caches which helps minimize the network round trips to fetch data. There is a lot of awesome technology involved with Hyperscale in how it is architected to use SSD-based caches and page servers. Serverless Database.

Azure 55

Azure Database Serverless Hardware 55

Smashing Magazine

JANUARY 6, 2020

Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Designed for the modern web, it responds to actual congestion, rather than packet loss like TCP does, it is significantly faster , with higher throughput and lower latency — and the algorithm works differently.

Performance 145

Performance Cache Network Metrics 145

Dotcom-Montior

MARCH 6, 2022

Moreover, caching utility may decrease the waiting time. Empty Cache (First View): The user access the website for the first time and has no cached data. Typical browser-based tools are going to clear the cache before making the requests. One of the important things to realize is that the empty cache takes 6.8

Performance 52

Performance Cache Website Speed 52

Smashing Magazine

JANUARY 7, 2019

Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. awesome-webpack is a curated list of useful Webpack resources, libraries and tools, including articles, videos, courses, books and examples for Angular, React and framework-agnostic projects.

Performance 103

Performance Cache Metrics Network 103

Brendan Gregg

AUGUST 29, 2021

Reads usually have apps waiting on them; writes may not (write-back caching). biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. This is a 64-Gbyte memory system, and 48 Gbytes is in the page cache (the file system cache). This shows many cache misses, with a hit ratio varying between 6.5

Cache 40

Cache C++ AWS Systems 40

Smashing Magazine

AUGUST 22, 2021

HTTP/3 performance features ( current article ). Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Latency can be roughly defined as the time it takes to send a packet from point A (say, the client) to point B (the server).

Performance 105

Performance Network Latency Servers 105

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time.

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time.

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time.

Energy 40

Energy Cache Traffic Website 40

IO River

NOVEMBER 2, 2023

CloudFront makes a simple choice here as it offers direct integration with all these services to let you cache responses across its global edge locations. For example, consider the scenario we looked at toward the start of the article. Amazon CloudFront integrates with Amazon S3, AWS WAF, and Amazon API Gateway.

Lambda 52

Lambda AWS Cache Website 52

Dotcom-Montior

MAY 6, 2020

Moreover, caching utility may decrease the waiting time. Empty Cache (First View): The user access the website for the first time and has no cached data. Typical browser-based tools are going to clear the cache before making the requests. One of the important things to realize is that the empty cache takes 6.8

Performance 53

Performance Cache Website Speed 53

The Morning Paper

JANUARY 23, 2020

1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. 1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. Members of the team begin diagnosing the issue using the #sysops and #warroom internal IRC channels.

Internet 53

Internet Internet Cache Engineering 53

Percona

JULY 17, 2023

First, some stage-setting for this blog article. Redis can handle a high volume of operations per second, making it useful for running applications that require low latency. An in-memory caching mechanism supports horizontal scaling, which enables it to handle large-scale applications and workloads effectively. It ranks No.

Open Source 74

Open Source Database Scalability Software 74

SQL Performance

APRIL 8, 2019

These AMD EPYC processors have a number of advantages for SQL Server workloads, as I will explain in this article. The L3 cache size is 64MB. I wrote about using CPU-Z to benchmark the Intel Xeon E5-2673 v3 processor in an Azure VM in this article. The L3 cache size is 64MB. AMD EPYC 7551 Details. Azure Lsv2 Details.

Azure 42

Azure Virtualization Storage Benchmarking 42

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. The fastest Androids predictably remain 18-24 months behind, owing to cheapskate choices about cache sizing by Qualcomm, Samsung Semi, and all the rest. The Moto G4 , for example.

Performance 124

Performance Network Cache Metrics 124

Percona

APRIL 17, 2023

The swap issue is explained in the excellent article by Jeremy Cole at the Swap Insanity and NUMA Architecture. The CFQ works well for many general use cases but lacks latency guarantees. The deadline excels at latency-sensitive use cases ( like databases ), and noop is closer to no schedule at all.

Best Practices 52

Best Practices Design Tuning Database 52

CSS - Tricks

MAY 3, 2021

Linux; Android 6.0.1; Moto G (4)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Mobile Safari/537.36 PTST/210419.211328", "accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9", image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",

Transportation 86

Transportation Cache Google Mobile 86

Highly Scalable

SEPTEMBER 18, 2012

In this article I’m trying to provide more or less systematic description of techniques related to distributed operations in NoSQL databases. In the rest of this article we study a number of distributed activities like replication of failure detection that could happen in a database. Read/Write latency. Data Placement.

Database 213

Database Latency C++ Scalability 213