Smashing Magazine

NOVEMBER 26, 2021

It can also have tests that are flaky and don’t inspire any confidence. You can think of writing unit test cases for your components or utility functions. This can be reduced by a proper code-review process. You can check out the documentation to get started with Hygen. Nirmalya Ghosh. 2021-11-26T12:30:00+00:00.

Cache 143

Cache Code Testing Design 143

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. For the migration, testing was a first-class citizen. Replay Testing Enter replay testing.

Latency 233

Latency Cache Java Traffic 233

SQL Performance

MARCH 29, 2022

Simple parameterization has a number of quirks in this area, which can result in more parameterized plans being cached than expected, or finding different results compared with the unparameterized version. Reputation = 252552 ; These statements result in six cached plans, three Adhoc and three Prepared : Different guessed types.

Cache 90

Cache Servers Database Testing 90

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

The Netflix TechBlog

JULY 1, 2019

Our UI runs on top of a custom rendering engine which uses what we call a “surface cache” to optimize our use of graphics memory. Surface Cache Surface cache is a reserved pool in main memory (or separate graphics memory on a minority of systems) that the Netflix app uses for storing textures (decoded images and cached resources).

Cache 166

Cache Design Testing Development 166

Smashing Magazine

MAY 16, 2022

This allows resource requests, including the HTML document itself, to be enriched with data during its lifecycle, and that information can be inspected for measuring the attributes of that resource! For the top-level HTML document, it is fetched upon user navigation but is still a resource request.

Servers 95

Servers Monitoring Cache Network 95

Randon ASCII

JULY 11, 2022

Downloads go through the cache, the cache is saved to disk, and saves to disk are slowed by (some) anti-virus software. I’d been testing on a virtual machine in a data center that I had access to, purely because this machine has an internet connection that runs at over 2 Gbps. It looks like this can happen. Case closed.

Cache 105

Cache Energy Google Processing 105

Randon ASCII

FEBRUARY 11, 2018

Zombies probably won’t consume 32 GB of your memory like they did to me, but zombie processes do exist, and I can help you find them and make sure that developers fix them. He’d even written a tool that would dump a list of zombie processes – their names and counts. I ran his tool and it showed 506,000 zombie processes!

Processing 72

Processing Programming Code Cache 72

CSS Wizardry

NOVEMBER 9, 2018

While this strategy is effective, it’s not simple: highly dynamic sites can be difficult to extract styles from, the process needs to be automated, we have to make assumptions about what above the fold even is, it’s hard to capture edge cases, and tooling still in its relative infancy. Test, test, test. Test and measure.

Network 278

Network Performance Media Cache 278

HammerDB

APRIL 19, 2023

Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. There are several ways to find out this information with the easiest way being by referring to the documentation. Instead, readers should refer to the HammerDB documentation. 4.22 %usr 38.40

Performance 54

Performance Benchmarking Cache Storage 54

Percona

JULY 5, 2023

The principle of locality While the principle of locality is usually related to processors and cache access patterns, it also applies to data access in general. We will review the process with sequential and random insertions to understand how rows are inserted. The test performed consisted of the following: Create a table.

Open Source 123

Open Source Database Efficiency Testing 123

SQL Performance

MARCH 22, 2022

In this first part, after a quick introduction, I look at the effects of simple parameterization on the plan cache. Being explicit gives you complete control over all aspects of the parameterization process, including where parameters are used, the precise data types used, and when plans are reused. Simple Parameterization. Users AS U.

Cache 61

Cache Servers Database Code 61

Dynatrace

MAY 2, 2019

Many Dynatrace monitoring environments now include well beyond 10,000 monitored hosts—and the number of processes and services has multiplied to millions of monitored entities. Best practice: Reduce bandwidth consumption by caching and keeping information. Dynatrace news.

Best Practices 127

Best Practices Monitoring Cache Speed 127

Tim Kadlec

MARCH 19, 2018

How well does AMP perform when the library is served using the AMP cache? But what you don’t see is that Google gets that instantaneous loading by actively preloading AMP documents in the background. In the case of the search carousel, it’s literally an iframe that gets populated with the entirety of the AMP document.

Cache 79

Cache Google Speed Metrics 79

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. You can then mimic the 90th percentile’s experience for testing.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

OCTOBER 2, 2023

Now, let’s dive into the technical features and best practices that my team adopted in the process of building the WaterBear web app. Jump to the workshops ↬ Using CDN For Caching And WebP For Lighter File Sizes As I mentioned a little earlier, our stack includes Sanity’s CMS. Let’s see the query caching in action.

Cache 73

Cache Strategy Best Practices Design 73

HammerDB

JUNE 27, 2022

The Transaction Processing Performance Council (TPC) was founded to bring standards to database benchmarking, and the history of the TPC can be found here. Also, when testing a database with a De-Witt clause, it was then possible to produce your own results without having to rely on a particular vendor to publish results of interest.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

SQL Performance

JUNE 8, 2022

Let’s now continue following the compilation process noting the effects on simple parameterization as we go. The text will normalize to the same parameterized form , allowing a cached prepared plan to be matched and reused. Let’s look at the plan cache: SELECT. Let’s look at an example. [ Id ] ; GO. Reputation = 5.

Cache 54

Cache Servers Database Processing 54

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

Smashing Magazine

OCTOBER 26, 2018

Recommended reading : WordPress Security As A Process. I’m working on Varying Vagrant Vagrants , and have set up a test site with an URL [link]. We’ll also import posts from the wordpress.org Theme Review Teams repository so that we have some test data to work with. For instance, we want to create a documentation endpoint.

Cache 79

Cache Website Speed Database 79

CSS Wizardry

AUGUST 13, 2019

I was doing some cursory research and running a few tests against a potential client’s site so as to get a good understanding of the shape of things before we were to work together. To further exacerbate the problem, the 302 response has a Cache-Control: must-revalidate, private. Can you see it? View full size (31KB).

Latency 203

Latency Cache Strategy Media 203

SQL Performance

APRIL 18, 2022

The low estimated cost of my test queries means we need to lower the cost threshold for parallelism to 1: EXECUTE sys. The values are documented in sys.query_store_query : 0 – None. It’s important to remember the plan must be cached. The actual execution plan is the same, so I won’t bother showing it. sp_configure.

Cache 58

Cache Servers Database Testing 58

SQL Performance

SEPTEMBER 6, 2022

This article isn’t about the act of lock escalation itself, which is already well documented and generally well understood. Much of the documentation is incorrect or at least imprecise about this and I’ve been unable to find a correct description in other writings. Testing environment. BEGIN TRANSACTION ; -- Test statement(s).

Database 98

Database Storage Testing Servers 98

Percona

APRIL 17, 2023

Make sure the drives are mounted with noatime and also if the drives are behind a RAID controller with appropriate battery-backed cache. Unfortunately, MongoDB is not NUMA-aware, and because of this, MongoDB can allocate memory unevenly, leading to the swap issue even with memory available. 25.84 - Total 21.04 25.84 - Total 21.04

Best Practices 52

Best Practices Design Tuning Database 52

Smashing Magazine

JULY 16, 2020

Its performance will depend on how you use React when building it, and on your understanding of how React operates and the process through which components live through the various phases of their lifecycle. During the initial rendering process, React builds a DOM tree of components. Note : See the documentation for more information.

Performance 122

Performance Code Virtualization Processing 122

Smashing Magazine

JUNE 25, 2020

Today, we’ll address storing and serving files for both single-server and scalable deployments while considering factors like compression, caching, and availability. Any file uploaded by a user, from profile pictures to personal documents, is called a media file. For more details, see the Django documentation. Media Files.

Media 70

Media Cache Storage AWS 70

Percona

NOVEMBER 9, 2023

Again, demonstrating it by example, let’s see how much of an impact correctly sizing the shared_buffers has on our test workload. Additionally, we can see the positive impact on increasing bgwriter_lru_maxpages because that process is not being throttled anymore.

Monitoring 87

Monitoring Tuning Metrics Servers 87

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Testing And Monitoring. You can then mimic the 90th percentile’s experience for testing. Table Of Contents.

Performance 104

Performance Cache Metrics Network 104

Smashing Magazine

JUNE 1, 2022

You’ve tested and retested the site for errors. You can adjust what browser is used, the kind of network connection to employ, the locations to test from, whether or not the browser’s cache is empty or full, how frequently to take the measurements, and more. Testing The Impact Of Specific Requests. Large preview ).

Website 133

Website Design Network Best Practices 133

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Testing And Monitoring. You can then mimic the 90th percentile’s experience for testing. Table Of Contents.

Performance 145

Performance Cache Network Metrics 145

Enprowess

MARCH 4, 2018

It is mainly required for parallel processing, fault tolerance and load balancing, high traffic on the application. Document and Media repositories must have the same configuration and should be accessible to all nodes. Enable cluster link for cache replication. Repeat the test with reverse roles.

Cache 52

Cache Transportation Media Traffic 52

SQL Server According to Bob

DECEMBER 18, 2018

SQL Server relies on Forced-Unit-Access (Fua) I/O subsystem capabilities to provide data durability, detailed in the following documents: SQL Server 2000 I/O Basic and SQL Server I/O Basics, Chapter 2. Device level flushing may have an impact on your I/O caching, read ahead or other behaviors of the storage system. 4 Socket, TPCC.

Servers 90

Servers Media Cache Storage 90

ACM Sigarch

JULY 17, 2023

One such challenge has been the emergence of marginal defect-driven faults that are difficult to address solely using best practices in manufacturing test and screening. We then discuss defects observed, the role of test and design to address this problem, and identify research opportunities. AVF modeling was developed for such faults.

Energy 52

Energy Hardware Best Practices Architecture 52

Smashing Magazine

JULY 29, 2019

MB , that suggests I’ve got around 29 pages in my budget, although probably a few more than that if I’m able to stay on the same sites and leverage browser caching. There’s a trade-off to be made here, as external stylesheets can be cached but inline ones cannot (unless you get clever with JavaScript ). Let’s talk about caching.

Cache 97

Cache Google Mobile Network 97

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.

Performance 104

Performance Cache Servers Education 104

Smashing Magazine

APRIL 29, 2022

Large images and videos aside, third-party scripts like pixel trackers, A/B testing, ads, widgets, CDNs, etc., On the other hand, Google Analytics still requires synchronous DOM API access when reading values from document and window. actively invites people to test out Partytown and share their thoughts with the team.

Website 82

Website Google Open Source Mobile 82

Smashing Magazine

NOVEMBER 17, 2022

Webpage performance test report for the Smashing Magazine website. The browser process consists of knowing the device width, checking the sizes attribute, and then choosing from the srcset images the one that has that width. Cache Your Images. Large preview ). The Relation Between Images And Web Performance.

Media 108

Media Cache Website Mobile 108