Smashing Magazine

JUNE 29, 2021

Without build optimizations (incremental builds, caching, we will get to those soon) this will eventually become unmanageable as well — think about going through all images in a website: resizing, deleting, and/or creating new files over and over again. The cache is invalidated on a time basis. Creating an On-Demand builder.

Cache 130

Cache Website Strategy Traffic 130

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts. In a previous blog post, [An Unbelievable Demo], I talked about how something similar happened many years ago where old tracing tool versions were used without updates. BPF didn't exist on those versions, so I used basic Ftrace capabilities that were available on Linux 3.2.

Latency 145

Latency Cache Energy Systems 145

Smashing Magazine

MAY 25, 2021

If the web font isn’t available then, we fall back to the fallback font, but the next page navigation (or a reload of this page) will use the font — as it should have finished downloading now. It’s also trickier to handle cached fonts we already have, not to mention differences in various fallback styles.

Operating System 143

Operating System Google Website Cache 143

KeyCDN

DECEMBER 8, 2022

Many factors affect the speed of your WordPress website; some of them are: Your web host Server-side optimizations (PHP version, compression, caching, etc.) Several website speed testing tools available could be used for this purpose. Even many of their demos, packed full of content, load under 800 ms.

Cache 52

Cache Website Speed Website Performance 52

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. Large preview ). Watch out for the Webpack Roadmap 2021.

Performance 145

Performance Cache Media Metrics 145

SQL Performance

SEPTEMBER 25, 2019

The general idea is to cache and replay results, saving repeated executions of inner-side operators wherever possible. When a spool is able to replay cached results, this is known as a rewind. You may find it helpful to think of a spool rebind as a cache miss, and a rewind as a cache hit. Lazy Table Spool. Rule Matching.

Performance 104

Performance Cache Servers Education 104

Smashing Magazine

FEBRUARY 3, 2022

These numbers are based on first-page load — caching seems very efficient for subsequent page loads. This Codepen demo demonstrates how it can be used to lazyload a number of tweets. Here’s a very basic demo of how we can do this using vanilla JS: See the Pen [Click to load video [forked]]([link] by Michelle Barker.

Social Media 102

Social Media Media Website Airlines 102

SQL Performance

MAY 16, 2019

If both sort and no-sort alternatives are available, the optimizer will make a cost-based choice. The demo loads 268 rows into a brand new clustered table using INSERT.SELECT with TABLOCK , and reports on the transaction log records generated. spt_values AS SV ; Plan Caching. DECLARE @NumRows bigint = 269 ; INSERT dbo.

Cache 67

Cache Servers Testing Storage 67

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. directives , and full ownership mitigates the risks that come with leaving static assets on third-party origins.

Google 364

Google Media Latency Metrics 364

SQL Performance

NOVEMBER 22, 2019

The total memory grant available for sorting is sufficient, but it is evenly split between parallel threads (as usual). These are extremely rare in my experience, so I am not going to provide demos for them. It matches one or more relational selections (a.k.a filters or predicates) just above a data-access operator. ProductID , P. [

Servers 77

Servers Cache Database Performance 77

Smashing Magazine

JANUARY 6, 2020

Usually, the most specific and relevant ones are: Time to Interactive (TTI) The point at which layout has stabilized, key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Other options are available , too.

Performance 145

Performance Cache Network Metrics 145

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 129

AWS Monitoring Ecommerce Lambda 129

Adrian Cockcroft

JANUARY 29, 2023

A later version of the slides is included in my Microservices Workshop deck from later that year, slides 168–200 ( pdf , keynote are available in GitHub.com/adrianco/slides ). For this demo on an old MacBook (2.7 I presented this analysis of response time distributions talk in 2016 — at Microxchg in Berlin ( video ).

Lambda 98

Lambda Latency Cache C++ 98

SQL Performance

OCTOBER 20, 2022

This was convenient for the demos but repeatable read isolation isn’t common in everyday use. Lock classes are available in this execution plan, but heap tables only use them to hold locks longer (for stability reasons) when the LOB data is off-row. Locking optimizations.

Testing 91

Testing Servers Cache Engineering 91

SQL Performance

MAY 29, 2019

The script below is a modification of the demo used in earlier parts in this series. GO. -- Clear the plan cache. The modified demo script is: IF OBJECT_ID ( N'dbo.Test' , N'U' ) IS NOT NULL. GO. -- Clear the plan cache. ( DB_ID ( ) , OBJECT_ID ( N'dbo.Test' , N'U' ) , 1 , -- Index ID.

Cache 64

Cache Testing Servers Code 64

Percona

MAY 2, 2023

example.net --port=27017 --username=user --authenticationDatabase=admin --db=demo --collection=events --out=/opt/backup/mongodump-2011-10-24 Note : If we don’t specify the DB name or Collection name explicitly in the above “mongodump” syntax then the backup will be taken for the entire database or collections, respectively.

Best Practices 52

Best Practices Database Storage Servers 52

Smashing Magazine

MARCH 7, 2022

That user preference is available in two (hopefully soon to be three!) This is available behind a flag in Chrome, but not yet on by default while it finishes standardization. Save Data API. Let’s have a quick recap on the Save Data API. ways: A Save-Data header is sent on each HTTP request. More after jump!

Website 103

Website Media Mobile Network 103

Smashing Magazine

JANUARY 7, 2019

Time to Interactive (TTI) The point at which layout has stabilized, key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Still, it’s not that difficult , and its support is coming, e.g. it’s available since Apache 2.4.26.

Performance 104

Performance Cache Network Metrics 104

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts 7. BPF didn't exist on those versions, so I used basic Ftrace capabilities that were available on Linux 3.2. Note that if BPF was available on my target environment when I wrote cachestat(8), I would have coded it completely differently. opensnoop Files opened table 3.

Open Source 40

Open Source Latency Cache Energy 40

Jos

APRIL 6, 2018

</ div >. ) ; If you do this, make sure that the images have the right cache response headers so subsequent requests from the browser hit the cache and it doesn’t download the images again. An option would be to set isVisible to true when IntersectionObserver is not available, which in practice would disable lazy-loading.

Code 147

Code Performance Media Google 147

Dynatrace

JUNE 18, 2019

Moreover, features like Instant Run and the Gradle Build Cache weren’t supported. Out-of-the-box support for Instant Run and the Gradle Build Cache make the auto-instrumentation process barely noticeable. All auto-instrumentation settings are available as Gradle configuration properties. Supportability.

Cache 27

Cache Java Monitoring Tuning 27

Jos

APRIL 5, 2018

< div className = " placeholder " />. ) &#125; </ div >. ) ; If you do this, make sure that the images have the right cache response headers so subsequent requests from the browser hit the cache and it doesn’t download the images again. This post is also available in Spanish. state = & # 123 ; isVisible : !

Code 130

Code Performance Google Media 130

Smashing Magazine

OCTOBER 8, 2021

Generate your own madlibs in the demo ; Look through the final code on Github ; Get a fully-built version set up in your accounts. We can use 11ty’s new Serverless mode to build them on request using Netlify’s On-Demand Builders to cache each Madlib. Netlify then caches that page on its edge CDN for each additional call.

Serverless 77

Serverless Cache Open Source Code 77

SQL Performance

JUNE 5, 2019

Neither is ideal, and when you simply have too many queries asking for more memory than is available to grant, you’ll see RESOURCE_SEMAPHORE waits. We will restore the backup and enable Query Store, and clear out any old Query Store data so we do not alter any metrics for this demo. The Sales.Orders table has about 4.6 million rows.

Servers 41

Servers Cache Database Metrics 41

Percona

JANUARY 4, 2023

You can locate all instruments available in your MySQL version under table setup_instruments. Stage – Instrument starting with ‘stage’ provides the execution stage of any query like reading data, sending data, altering table, checking query cache for queries, etc. For getting familiar, check the PMM demo.

Performance 98

Performance C++ Monitoring Servers 98

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. The Gateway To fill these gaps?—?under

Open Source 186

Open Source Network Transportation Cache 186

SQL Performance

MARCH 8, 2021

Total elapsed time is 933ms with 6,673ms of CPU time with a warm cache. The yellow consumer times are short because it is quick to retrieve a row from the exchange when data is available. We can do the correct offset calculation manually using the data available in the plan.

Servers 95

Servers Tuning Architecture Processing 95

Smashing Magazine

JANUARY 21, 2019

Hence, the API can be implemented on any language (which is one of the beauties of GraphQL: being a specification and not an actual implementation has enabled it to become available in a myriad of languages.). Native Client-Side Cache/Data Store. API response example. We can benefit from this situation in several ways.

Social Media 64

Social Media Database Media Website 64

Smashing Magazine

APRIL 29, 2021

Chrome DevTools allows you to disable modern image formats ( demo ), like WebP, AVIF or JPEG XL, to test differing fallbacks for them in the Rendering panel: Chrome DevTools allows you to test differing fallbacks for WebP, AVIF or JPEG XL in the Rendering panel. will optimize images dynamically upon request and store them in a local cache.

Media 145

Media Network Metrics Mobile 145

Smashing Magazine

AUGUST 31, 2021

You can check a real-world implementation of this ContextAPI pattern in our demo repository. When requesting data from the client-side, it is important to be mindful of a few things: the user’s network connection: avoid re-fetching data that is already available. zero-config caching layer. </p> ) }. error handler.

Cache 103

Cache Servers Best Practices Code 103

Abhishek Tiwari

NOVEMBER 3, 2018

They often get blindsided by vendor’s pitch and end-up making decision based on some fancy demos (see my post from 2014 on Adobe AEM ). Lastly, the whole website was very slow to load - CDN caching was not effective as a large number of pages were personalised for pricing and availability depending on suburb and postcode.

Systems 63

Systems Cache Website Network 63