Alex Russell

MARCH 6, 2021

Back in 2016, I gave a talk outlining the causes and effects of the terrible performance of web apps built using popular tools on the fastest-growing device segment: low-end to mid-range Android phones. Poor performance has a compound effect on user expectations at an ecosystem level. Live by the link, die by the link.

Performance 124

Performance Network Cache Metrics 124

Percona

MAY 1, 2023

In this blog post, we will delve into the world of PostgreSQL performance tuning and establish some basic guidelines for setting database parameters to enhance the performance of your PostgreSQL database, based on the workload. What is PostgreSQL performance tuning? Why is PostgreSQL performance tuning important?

Tuning 52

Tuning Efficiency Database Performance 52

SQL Performance

SEPTEMBER 25, 2019

Performance spools are lazy spools added by the optimizer to reduce the estimated cost of the inner side of nested loops joins. An example plan shape showing a lazy table performance spool is below: The questions I set out to answer in this article are why, how, and when the query optimizer introduces each type of performance spool.

Performance 104

Performance Cache Servers Education 104

Smashing Magazine

JANUARY 21, 2021

How We Improved SmashingMag Performance. How We Improved SmashingMag Performance. Every web performance story is similar, isn’t it? A day when a project, fully polished and carefully optimized, gets launched, ranking high and soaring above performance scores in Lighthouse and WebPageTest. Vitaly Friedman.

Performance 145

Performance Cache Mobile Network 145

Dynatrace

OCTOBER 21, 2020

If that’s the case, the update process continues to the next set of clusters and that process continues until all clusters are updated to the new version. By default, checking these configurations is not a performance problem as a standard tenant only has a handful of these custom locations configured.

Code 241

Code Cloud Engineering Java 241

HammerDB

FEBRUARY 26, 2024

This is particularly important when running automated workloads back-back to generate a performance profile for a progressively increasing number of virtual users. The history list length that can be queried is the number of undo log pages that contain changes.

C++ 62

C++ Cache Database Virtualization 62

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]. Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are? Vitaly Friedman.

Performance 145

Performance Cache Network Metrics 145

Scalegrid

JULY 29, 2020

In our final post, we will put them head-to-head in a detailed feature comparison and compare the results of PgBouncer vs. Pgpool-II performance for your PostgreSQL hosting ! It uses only one process which makes it very lightweight. If we require N parallel connections, this forks N child processes. Performance Testing.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

Smashing Magazine

JANUARY 7, 2019

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are? Vitaly Friedman.

Performance 103

Performance Cache Metrics Network 103

Scalegrid

FEBRUARY 8, 2024

This process effectively duplicates essential parts of information to safeguard against potential loss. It utilizes methodologies like DStore, which takes advantage of underused hard drive space by using it for storing vast amounts of collected datasets while enabling efficient recovery processes.

Storage 130

Storage Systems Big Data Azure 130

Randon ASCII

OCTOBER 15, 2018

Windows has long had a reputation for slow file operations and slow process creation. This weeks’ blog post covers a technique you can use to make process creation on Windows grow slower over time (with no limit), in a way that will be untraceable for most users! A long-standing correctness bug in the Windows file cache: Compiler bug?

Processing 57

Processing Cache Programming Virtualization 57

Percona

DECEMBER 23, 2022

The storage device has performance characteristics pretty similar to an AWS gp2 EBS volume of about 330 GB in size. I wanted most of the memory to be available for the file cache, where the compressed SST files will be cached. The block cache just needs to be large enough to keep the index and filter blocks in memory.

Storage 56

Storage Cache C++ Virtualization 56

The Morning Paper

MARCH 8, 2020

For such workloads, shared-nothing architectures beget high cost, inflexibility, poor performance, and inefficiency, which hurts production applications and cluster deployments. The caching use case may be the most familiar, but in fact it’s not the primary purpose of the ephemeral storage service. joins) during query processing.

Storage 112

Storage Engineering Cache Serverless 112

The Netflix TechBlog

SEPTEMBER 8, 2020

Over the course of this post, we will talk about our approach to this migration, the strategies that we employed, and the tools we built to support this. 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.

Latency 233

Latency Cache Java Traffic 233

The Morning Paper

FEBRUARY 6, 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

Percona

AUGUST 31, 2018

In this blog, we will establish basic guidelines for setting PostgreSQL database parameters to improve database performance according to workload. Bear in mind that while optimizing PostgreSQL server configuration improves performance, a database developer must also be diligent when writing queries for the application. shared_buffer.

Tuning 57

Tuning Database Performance Benchmarking 57

Dynatrace

JUNE 16, 2020

Spotty monitoring coverage makes it hard to identify, analyze, and resolve performance problems, which can endanger key business transactions and impact users. While a general processor can handle any workload, a zIIP can process only certain workloads like DB2, Java, or XML. zIIP eligible time processed on general CPU.

Innovation 151

Innovation Metrics Infrastructure Programming 151

CSS - Tricks

APRIL 1, 2021

Site performance is potentially the most important metric. The better the performance, the better chance that users stay on a page, read content, make purchases, or just about whatever they need to do. Here’s the thing: performance is more than a one-off task. billion if the site slowed down by just one second. Lighthouse.

Cache 92

Cache Social Media Media Website 92

Smashing Magazine

JUNE 8, 2021

Image optimization , loading behavior and rendering in the browser require understanding of image formats and image compression techniques, image decoding and browser rendering, image CDNs and adaptive media loading, not to mention effective caching and preloading. DRM-free, of course. Image Decoding Performance. +.

Media 105

Media Cache Google Best Practices 105

Smashing Magazine

APRIL 28, 2021

Image optimization , loading behavior and rendering in the browser require understanding of image formats and image compression techniques, image decoding and browser rendering, image CDNs and adaptive media loading, not to mention effective caching and preloading. DRM-free, of course. Image Decoding Performance. +.

Media 92

Media Cache Google Best Practices 92

The Morning Paper

JUNE 23, 2019

Factor VI in the 12-factor app manifesto , “Execute the app as one or more stateless processes,” to be dropped and replaced with “Execute the app as one or more stateful processes.” session state that you want to survive an application process crash), and to keep the application server/services layer stateless.

Cache 79

Cache Latency Google Lambda 79

SQL Performance

MAY 20, 2022

The Compilation Process. The most important things to understand about server-side parameterization are it doesn’t happen all at once and a final decision to parameterize isn’t made until the end of the process. It’s simply too early in the process. Let’s look at the plan cache: SELECT. usecounts , CP. objtype , ST. [

Cache 55

Cache Database Servers Testing 55

Smashing Magazine

JANUARY 15, 2019

How Improving Website Performance Can Help Save The Planet. How Improving Website Performance Can Help Save The Planet. Perhaps the biggest win when it comes to making websites more sustainable is that performance, user experience and sustainability are all neatly intertwined. Jack Lenox. 2019-01-15T13:30:32+01:00.

Website Performance 73

Website Performance Website Energy Performance 73

CSS Wizardry

AUGUST 13, 2019

So, what are the performance implications of all of this? To further exacerbate the problem, the 302 response has a Cache-Control: must-revalidate, private. header , meaning that we will always make an outgoing request for this resource regardless of whether or not we’re hitting the site from a cold or a warm cache.

Latency 203

Latency Cache Strategy Media 203

Smashing Magazine

NOVEMBER 17, 2022

That is why, today, Web Performance is as important and trendy as having an online presence. Table of Contents: What Is Web Performance? What Is Web Performance? Web performance refers to the speed at which a website loads, how fast it’s downloaded, and how an app is displayed on the user’s browser. Conclusion.

Media 105

Media Cache Website Mobile 105

IO River

NOVEMBER 2, 2023

A CDN (Content Delivery Network) is a network of geographically distributed servers that brings web content closer to where end users are located, to ensure high availability, optimized performance and low latency. This method augments the performance benefits of using a CDN while also ensuring redundancy and resilience and reducing costs.To

Best Practices 52

Best Practices Strategy Traffic Virtualization 52

Sutter's Mill

FEBRUARY 13, 2017

Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). On April 25-27, I’ll be in Stockholm (Kista) giving a three-day seminar on “High-Performance and Low-Latency C++.” If you’re interested in attending, please check out the links, and I look forward to meeting and re-meeting many of you there.

Latency 51

Latency C++ Hardware Performance 51

The Morning Paper

FEBRUARY 23, 2020

Caching of query results on the other hand, looks like a good business model, at large enough scale these might amount to pretty much the same thing). Contractors can organise into contractor groups to collectively satisfy more stringent performance and fault-tolerance guarantees than any one contractor may be able to do on their own.

Blockchain 94

Blockchain Internet Internet IoT 94

Speed Curve

FEBRUARY 25, 2024

My favourite place to start is with the Web Vitals heatmap on SpeedCurve's RUM > Performance dashboard. The Performance panel can be overwhelming – even for experienced engineers – as it exposes how much work the browser is doing to load pages or handle interactions. Switching to the DevTools Performance panel 3.

Analytics 92

Analytics Processing Google Mobile 92

Alex Russell

OCTOBER 22, 2017

TL;DR: performance budgets are an essential but under-appreciated part of product success and team health. Nobody is trying to do a poor job, and yet the results of a “completed” PWA project often require weeks or months of painstaking rework to deliver minimally acceptable performance. Partner meetings are illuminating.

Performance 68

Performance Benchmarking Network Mobile 68

Smashing Magazine

SEPTEMBER 20, 2021

And of course, scrapers could scrape your site to look for security vulnerabilities or exposed contact or sales lead details. They all generally are instrumented as JavaScript processes that are loaded onto your site’s web pages through a tag or snippet of loader code. Search Engine And Web Archive Cached Results.

Website 89

Website Analytics Google Cache 89

Randon ASCII

SEPTEMBER 8, 2019

While CPU Usage (Precise) is great for seeing how much CPU time a process is using, and why it is sitting idle, the CPU Usage (Sampled) table is the right tool for figuring out where CPU time is being spent. This means that there is no caching between RuntimeBroker.exe and this file. That is an average read of 68 bytes each time.

Latency 79

Latency Cache Programming Operating System 79

IO River

NOVEMBER 2, 2023

A CDN (Content Delivery Network) is a network of geographically distributed servers that brings web content closer to where end users are located, to ensure high availability, optimized performance and low latency. This method augments the performance benefits of using a CDN while also ensuring redundancy and resilience and reducing costs.To

Best Practices 40

Best Practices Strategy Traffic Virtualization 40

Smashing Magazine

OCTOBER 29, 2019

Even if you resize your images to the exact specifications of your website and run them through a compressor, they can still put a strain on performance and run up bandwidth usage. What Is WebP Caching? Caching is an integral part of keeping any website running fast. And WebP caching is only going to make it better.

Website 72

Website Speed Cache Google 72

Percona

MAY 15, 2023

In both cases, when using virtually-synchronous replication, the process will require certification from each node and local (by node) write; as such, the number of writes is NOT distributed across multiple nodes but duplicated. Because the solutions still rely on writing in one single node that works as Primary. This is it.

Traffic 125

Traffic Scalability Database Servers 125

SQL Performance

OCTOBER 20, 2022

The engine processes the row through parent operators before releasing the shared lock prior to locking and reading the next row. When the engine chooses page-level locking granularity, it takes and holds a shared page lock while processing rows on the current page and then releases the lock right before acquiring a lock on the next page.

Testing 91

Testing Servers Cache Engineering 91

SQL Performance

NOVEMBER 10, 2021

This process enables simplifications that can result in more optimal query plans. During early stages of query processing, SQL Server evaluates certain expressions involving constants, folding those to the result constants. In my examples, I’ll use a sample database called TSQLV5. Constant Folding. So, let’s try….

Cache 121

Cache Servers Code Database 121