Official Blog - World Web Technology

AUGUST 27, 2023

For example, website design is very crucial to impress your website visitors. Unlike other popular programming languages such as C or Pearl, PHP pages have HTML with embedded code with some start and end processing instructions that allow you to jump directly into and out of PHP mode.

Development 98

Development Ecommerce Open Source Website 98

Smashing Magazine

JULY 18, 2022

There was something he wanted to C."; If anything makes the JavaScript code fail, the paid user won’t have their dose of fun and might get angry. The “stale-while-revalidate” cache control strategy can reduce the TTFB issue by serving a cached version of the page until it’s updated. It works, but is it the best approach?

Cache 114

Cache Website Energy Servers 114

ACM Sigarch

OCTOBER 12, 2020

These, let’s call them metal languages , include FORTRAN (introduced in 1957), C (1972), and C++ (1985). Programmers continue to write applications in them, and they continue to evolve: the just approved C++20 standard is the latest example. Despite their age, these languages are far from dead! As Leiserson et al.

C++ 108

C++ Benchmarking Hardware Architecture 108

Percona

DECEMBER 23, 2022

The use case is the TPC-C benchmark but executed not on a high-end server but on a lower-spec virtual machine that is I/O limited like for example, with AWS EBS volumes. If you wonder what is the difference between MyRocks and RocksDB, consider MyRocks as the piece of code, or the glue, that allows MySQL to store data in RocksDB.

Storage 56

Storage Cache C++ Virtualization 56

HammerDB

JUNE 27, 2022

HammerDB is Free software and consequently engineers should consider not only how they can benefit from using the software but also how they can contribute to the community with code and documentation. In addition to the TPC-C specification for OLTP workloads, the TPC has also developed the TPC-E specification. The NOPM Metric.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Particular Software

MAY 8, 2023

When code breaks, our first move is carefully inspecting the call stack. For example, in a highly observable system, we can easily infer the internal state and behavior of the system without going back into the code to make changes when something unexpected occurs. Start order process| C[Order saga] C --> |3.

Systems 52

Systems C++ Azure Metrics 52

Adrian Cockcroft

JANUARY 29, 2023

The common way to deal with this is to measure percentiles, and track the 90%, 99% response times for example. For example lets say you have a 99% within 2 seconds SLA, and your current 99%ile measured over one minute is 1 second. > system.time(wait1 <- normalmixEM(waiting, mu=c(50,80), lambda=.5,

Lambda 98

Lambda Latency Cache C++ 98

Smashing Magazine

NOVEMBER 26, 2021

However, there are a few ways in which you can make a large code-base easy to maintain. In certain cases, the build will fail if there are type mismatches in your code as Next.js We recommend using code editor type checking during development.”. Use Code Generators Like Hygen To Generate Boilerplate Code.

Cache 143

Cache Code Testing Design 143

HammerDB

JULY 5, 2022

So instead we are going to take a cut down version of the HammerDB TPROC-C driver script and do the same in Python and use the HammerDB infrastructure to measure performance. For this example, we are going to use PostgreSQL stored procedures in PostgreSQL 14.1. So firstly we have the Tcl based driver script called pgtest_thread.tcl.

Benchmarking 98

Benchmarking Database C++ Virtualization 98

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts. There is already documentation as man pages and example files in the bcc and bpftrace repositories that you can link to, to help your customers understand the tool output. E.g., here's the execsnoop(8) example files in bcc and bpftrace. opensnoop Files opened table.

Latency 145

Latency Cache Energy Systems 145

Smashing Magazine

JANUARY 11, 2021

Have we optimized enough with tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, progressive hydration, clients hints, HTTP/3, service workers and — oh my — edge workers? It’s much easier to reach performance goals when the code base is fresh or is just being refactored.

Performance 145

Performance Cache Media Metrics 145

HammerDB

APRIL 19, 2023

For example, if you are buying the latest Amazon memory-optimized EC2 instance (R7iz), the AWS page ( [link] ) tells us the following: Up to 3.9 This all sounded very similar to HammerDB TPROC-C workload (we will look at HammerDB TPROC-H (OLAP) another time), so it is easy for any reader to think both workloads are about the same.

Performance 54

Performance Benchmarking Cache Storage 54

IO River

NOVEMBER 2, 2023

For example, consider the following scenario :‍Figure: A Vendor Lock-in Architecture‍You've used Amazon S3 to host your static site and content and Amazon API Gateway to host your APIs that clients will use to decide on the static content to fetch. Akamai tried to convince many users to use this new framework.

Lambda 52

Lambda AWS Cache Website 52

Brendan Gregg

AUGUST 18, 2019

It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. This example instrumented one of many thousands of available events. biolatency.bt

Latency 68

Latency C++ Cache Programming 68

Smashing Magazine

JUNE 2, 2021

And while you can usually cache the full page of an article, the same is not true of many shop pages and elements. Some are user-specific, like the shopping cart in the header or the wish list, and due to the personal nature of the data, they should never be cached. See the Pen [Jewellerybox Case Study (Example #1)]([link] by Pfenya.

Performance 115

Performance Cache Website Mobile 115

SQL Performance

APRIL 20, 2021

Additional parallel workers will be started to run the additional parallel tasks contained in branches B, C, and D. Our example query is running at DOP 2, so branch B will get two additional tasks. The same goes for branch C and branch D, giving a total of six additional tasks. Branch C (additional). Two additional tasks.

C++ 98

C++ Processing Servers Cache 98

Smashing Magazine

JANUARY 6, 2020

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? It’s much easier to reach performance goals when the code base is fresh or is just being refactored.

Performance 145

Performance Cache Network Metrics 145

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. Later on, your service might require security, and you might use AWS Web Application Firewall, which directly integrates with Amazon CloudFront to help secure your service. ‍

Lambda 52

Lambda AWS Cache Website 52

Sutter's Mill

JANUARY 25, 2021

Not only is the integer comparison operation cheap, but min and max are already being accessed by this function and so they’re already “hot” in registers or cache. One commonly cited example is is_sorted. Given some assertion facility that can be used like this: MyAssert( condition ); // expresses that ‘condition’ must be true 1.

C++ 45

C++ Programming Cache Testing 45

Smashing Magazine

JANUARY 7, 2019

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are?

Performance 103

Performance Cache Metrics Network 103

SQL Server According to Bob

MAY 19, 2019

As you can imagine, with a code base as large and vast as SQL Server, there is always room for improvement. For example, Azure SQL Database Edge can already use TSQL Predict Machine Learning (ML) and Column Storage. There are a bunch of folks with compiler, linker, SQL Server code, testing and other disciplines who provided input.

IoT 61

IoT Servers Development Cache 61

Smashing Magazine

JUNE 30, 2021

iOS empowers developers to easily parallelize code using Grand Central Dispatch , Android does this via their new, unified task scheduler WorkManager and game engines like Unity have job systems. How long your piece of JavaScript takes to finish depends on how fast the device is that your code is running on.

Games 145

Games Architecture Code C++ 145

SQL Performance

SEPTEMBER 25, 2019

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. The general idea is to cache and replay results, saving repeated executions of inner-side operators wherever possible.

Performance 104

Performance Cache Servers Education 104

The Morning Paper

JUNE 20, 2019

For example, we observed only a small number of configuration bugs caused by mis-specification of configuration entries in configuration files, even though such bugs were reported to be common in other settings. Most Azure code is written in.Net managed languages such as C#, reducing memory leak bugs. Bug resolution.

Cloud 81

Cloud Azure Cache C++ 81

Smashing Magazine

JUNE 18, 2020

Flutter isn’t that, though: it runs natively on each platform, and it means each app runs just like it would run if it were written in Java/Kotlin or Objective-C/Swift on Android and iOS, pretty much. Example 1: Storage. Running Different Code On Different Platforms. The Lack Of Secure Storage On the Web.

Storage 93

Storage Mobile Website Java 93

Smashing Magazine

JUNE 1, 2022

In many cases, they can be super convenient to add or remove without having to push code changes to the site. For example, users can install browser plugins to suggest coupon codes when they are shopping, to scan web pages for malware, to play games or message friends, or do any number of other things. More after jump!

Website 131

Website Design Network Best Practices 131

ScaleOut Software

JULY 27, 2018

Looking beyond distributed caching, it’s their ability to perform data-parallel analysis that gives IMDGs such exciting capabilities. This model works well for storing large, object-oriented collections of business-logic state, such as the examples listed above. That’s where performance problems can begin.

Scalability 40

Scalability Cache Airlines Healthcare 40

ScaleOut Software

JULY 27, 2018

Looking beyond distributed caching, it’s their ability to perform data-parallel analysis that gives IMDGs such exciting capabilities. This model works well for storing large, object-oriented collections of business-logic state, such as the examples listed above. That’s where performance problems can begin.

Scalability 40

Scalability Cache Airlines Healthcare 40

Enprowess

MAY 24, 2022

It allows developers to create complex UIs from a small and isolated code called “components” ReactJS comprises two parts: the pieces containing HTML code, components, and an HTML document – where all your components will render. Platform-specific code. Power boost to Search Engine Optimization (SEO).

Mobile 52

Mobile Open Source Virtualization Speed 52

The Netflix TechBlog

NOVEMBER 9, 2022

We also see much higher L1 cache activity combined with 4x higher count of MACHINE_CLEARS. a usage pattern occurring when 2 cores reading from / writing to unrelated variables that happen to share the same L1 cache line. Cache line is a concept similar to memory page?—? Thread 0’s cache in this example.

Hardware 363

Hardware Cache Performance Latency 363

Smashing Magazine

OCTOBER 26, 2018

For example, simple presentational sites or sites that use WordPress as a backend are the main candidates for the decoupled approach. When it comes down to how WordPress is programmed, one thing is certain: it doesn’t follow the M odel- V iew- C ontroller (MVC) design pattern that many developers are familiar with.

Cache 78

Cache Website Speed Database 78

Percona

JUNE 4, 2023

The worklogs are where the design for future releases happens, and these are opened up when their features are fully developed and source-code-pushed. From a source code standpoint, MySQL makes pushes to Github when a release is made, whereas open source development happens for Percona Server for MySQL and MariaDB Server on Github.

Open Source 52

Open Source Servers Storage Scalability 52

John McCalpin

NOVEMBER 5, 2016

So consider the dense matrix multiplication operation C += A*B, where A, B, and C are dense square matrices of order N, and the matrix multiplication operation is equivalent to the pseudo-code: for (i=0; i<N; i++) { for (j=0; j<N; j++) { for (k=0; k<N; k++) { C[i][j] += A[i][k] * B[k][j]; } } }.

Cache 40

Cache C++ Latency Hardware 40

SQL Server According to Bob

DECEMBER 18, 2018

For example, if a flight booking reports that a seat has successfully been booked, then the seat will remain booked even if the system crashes.” – [link]. Device level flushing may have an impact on your I/O caching, read ahead or other behaviors of the storage system. Patrick and Purvi doing performance and regression analytics.

Servers 90

Servers Media Cache Storage 90

Enprowess

SEPTEMBER 7, 2021

has a unit testing framework called Jasmine, which allows unit testing of code during development. It makes code very easy to understand and launch. Stable code: With downward data flow, React.js assurances code stability and better application performance. Caching of individual modules. Therefore, Node.js

Open Source 52

Open Source Virtualization Programming Servers 52

Brendan Gregg

JANUARY 17, 2018

Short durations can be useful for understanding how well a WSS will fit into the CPU caches (L1/L2/L3, TLB L1/L2, etc). In this case, 28 Mbytes is a little larger than the LLC for this CPU, so may not cache so well (in a single LLC, anyway, and based on this single measurement). wss.pl -C `pgrep -n mysqld` 1. 102.36. [.].

Cache 71

Cache Latency C++ Programming 71

Brendan Gregg

FEBRUARY 9, 2018

This overhead can be reduced by A) pcid, fully available in Linux 4.14, and B) Huge pages. - **Cache access pattern**: the overheads are exacerbated by certain access patterns that switch from caching well to caching a little less well. For example, using my [perf-tools]: sudo./perf-tools/bin/funccount

Performance 75

Performance Benchmarking Cache Tuning 75