Articles

Comment se démarquer lors d'entretiens comportementaux en ingénierie

Comment se démarquer lors d’entretiens comportementaux en ingénierie

,

Pour se démarquer lors d’un entretien comportemental en ingénierie, il est important de se préparer et de montrer ses compétences. Faites une bonne impression et démontrez vos capacités !

## Comment utiliser le format STAR pour répondre aux questions comportementales

Après avoir mené des entretiens avec des centaines d’ingénieurs et de gestionnaires d’ingénierie chez Meta, Twitter et d’autres entreprises, j’ai remarqué des modèles communs dans la façon dont les candidats abordaient les questions d’entretien comportemental. Alors que de nombreux candidats se sont bien débrouillés sur le plan technique, ils ont souvent eu du mal à articuler leur travail, leurs réalisations et leurs défis lors d’un entretien, ce qui a entraîné des refus.

Cet article aborde les conseils pour utiliser efficacement le format STAR largement connu pour répondre aux questions comportementales. Il aborde les pièges courants et fournit des exemples illustratifs pour aider les candidats à comprendre comment utiliser le format STAR pour communiquer clairement et se démarquer. C’est le cadre qui m’a aidé à passer avec succès des entretiens de direction technique chez Databricks, Twitter, Airbnb, Plaid, Notion, Uber et d’autres entreprises.

Le format STAR est une méthode très utile pour répondre aux questions comportementales lors des entretiens. Il permet aux candidats de structurer leurs réponses et de fournir des informations complètes et précises. La méthode STAR est basée sur quatre étapes : Situation, Tâche, Action et Résultat. Chaque étape est essentielle pour répondre à une question comportementale et fournir une réponse complète.

Lorsque vous répondez à une question comportementale en utilisant la méthode STAR, vous devez commencer par décrire la situation ou le contexte dans lequel vous avez travaillé. Vous devez ensuite expliquer la tâche à laquelle vous avez été confronté et comment vous l’avez abordée. Ensuite, vous devez expliquer les actions que vous avez prises pour résoudre le problème. Enfin, vous devez expliquer les résultats obtenus grâce à votre travail. Il est important de se rappeler que les résultats doivent être quantifiables et mesurables.

Par exemple, si un recruteur vous demande comment vous avez contribué à améliorer la base de données d’une entreprise, vous pouvez utiliser la méthode STAR pour répondre à cette question. Vous pouvez commencer par expliquer la situation : «J’ai été embauché par une entreprise pour améliorer sa base de données.» Vous pouvez ensuite expliquer la tâche : «Ma tâche consistait à analyser la base de données existante et à identifier les lacunes.» Ensuite, vous pouvez expliquer les actions que vous avez prises : «J’ai analysé la base de données et j’ai identifié plusieurs lacunes. J’ai ensuite mis en œuvre des modifications pour améliorer la qualité et la performance de la base de données.» Enfin, vous pouvez expliquer les résultats obtenus : «Grâce à mes modifications, la base de données a été améliorée de 10 % en termes de qualité et de performance.»

En conclusion, l’utilisation du format STAR est un excellent moyen pour les candidats de structurer leurs réponses aux questions comportementales lors des entretiens. Il permet aux candidats de communiquer clairement leurs réalisations et leurs

Source de l’article sur DZONE

/par
4 meilleurs frameworks dApp pour les développeurs Ethereum débutants

4 meilleurs frameworks dApp pour les développeurs Ethereum débutants

,

Les développeurs Ethereum débutants peuvent facilement créer des applications décentralisées grâce aux 4 meilleurs frameworks d’app: Truffle, Embark, Dapp et Dapple.

## Qu’est-ce qu’une dApp ?

L’Ethereum a connu une croissance fulgurante ces dernières années. Selon YCharts, la blockchain programmable compte désormais environ 220 millions d’adresses uniques. Liée à l’augmentation des utilisateurs est une explosion du nombre de dApps. Des entreprises et des startups du monde entier, de la finance, des ventes, des RH, de la comptabilité, de la chaîne d’approvisionnement et de la fabrication, utilisent des dApps pour rationaliser les processus et intégrer de nouveaux clients. Plusieurs cadres existent qui simplifient le processus de développement de dApp pour les développeurs Web2 qui souhaitent participer à Web3. Ce post examine quatre des plus populaires. Mais tout d’abord, qu’est-ce qu’une dApp?

Qu’est-ce qu’une dApp?

Une dApp, ou application décentralisée, est un logiciel sans serveur qui s’exécute sur un réseau décentralisé et utilise une blockchain programmable pour la sécurité, la transparence et l’immuabilité. Une dApp combine des contrats intelligents avec une interface utilisateur frontale (HTML5, React, Angular). Les dApps peuvent être utilisées dans une variété d’industries et de services, des médias sociaux à la gestion de la chaîne d’approvisionnement, au suivi des paiements, à la résolution des plaintes et à toutes sortes de services comptables et financiers (décentralisés).

Les frameworks pour le développement de dApps sont essentiels pour permettre aux développeurs Web2 de participer à Web3. Les frameworks fournissent une architecture commune pour le développement et le déploiement de dApps. Ils fournissent également des outils et des bibliothèques qui facilitent le processus de développement et permettent aux développeurs Web2 de se familiariser avec les technologies Web3. Quatre des frameworks les plus populaires sont Ethereum, Hyperledger Fabric, EOS et Corda. Chacun offre des caractéristiques uniques qui répondent aux besoins des développeurs Web2.

Les frameworks pour le développement de dApps sont essentiels pour permettre aux développeurs Web2 de participer à Web3. Ethereum est le framework le plus populaire et le plus mature pour le développement de dApps. Il offre une architecture modulaire qui permet aux développeurs de créer des applications complexes avec des contrats intelligents. Ethereum fournit également une variété d’outils et de bibliothèques qui facilitent le processus de développement et permettent aux développeurs Web2 de se familiariser avec les technologies Web3. Hyperledger Fabric est un autre framework populaire pour le développement de dApps. Il offre une architecture modulaire qui permet aux développeurs de créer des applications complexes avec des contrats intelligents. Hyperledger Fabric fournit également une variété d’outils et de bibliothèques qui facilitent le processus de développement et permettent aux développeurs Web2 de se familiariser avec les technologies Web3. EOS est un autre framework populaire pour le développement de dApps. Il offre une architecture modulaire qui permet aux développeurs de créer des applications complexes avec des contrats intelligents. EOS fournit également une variété d’outils et de bibliothèques qui facilitent le processus de développement et permettent aux développeurs Web2 de se familiariser avec les technologies Web3. Enfin, Corda est un framework populaire pour le développement de dApps. Il offre une architecture modulaire qui permet aux développeurs de créer des applications complexes

Source de l’article sur DZONE

/par
Restez à la Pointe des Tendances et Technologies en Science des Données.

Restez à la Pointe des Tendances et Technologies en Science des Données.

,

Restez à la pointe des tendances et technologies en science des données en suivant les dernières innovations et en développant vos compétences.

Restez à jour avec les tendances et technologies de la science des données

La science des données est une discipline en plein essor qui a le pouvoir de changer complètement la manière dont une entreprise mène ses affaires et aborde les problèmes. En tant qu’informaticien enthousiaste, il est crucial d’utiliser les techniques et outils les plus efficaces disponibles pour rester à la pointe des tendances et technologies les plus récentes.

Dans cet article, vous découvrirez des moyens de rester à jour des tendances et technologies les plus récentes en matière de science des données. Vous apprendrez les dernières tendances du secteur et vous assurerez de suivre le rythme des avancées dans le domaine. À la fin de cet article, vous aurez les connaissances et les ressources nécessaires pour rester à jour dans le monde de la science des données.

Afin de rester à jour des dernières technologies et tendances en matière de science des données, il est important de participer à des conférences, de lire des articles et de suivre des tutoriels. Les conférences sont une excellente façon de se tenir au courant des dernières informations et de rencontrer des experts du secteur. Il existe également de nombreux articles et tutoriels sur Internet qui peuvent vous aider à rester à jour. Enfin, il est important d’utiliser les outils et technologies les plus récents pour rester compétitif.

En conclusion, pour être un informaticien enthousiaste et compétent en matière de science des données, il est important de rester à jour des dernières tendances et technologies. Pour ce faire, vous devrez participer à des conférences, lire des articles et suivre des tutoriels, ainsi que vous familiariser avec les outils et technologies les plus récents.

Source de l’article sur DZONE

/par

How Does Routing Work?

,

Purpose of Routing

Routes are created to allow nodes to communicate data packets across networks. In order to route data packets to their destination, they travel along a series of links, each link having a single direction (one-way). A link is formed by joining two adjacent routers together; the router at either end of a link is called the ingress or egress router.

The purpose of routing is to find the best path between two points. Routers exchange information about what routes exist between them using standard protocols. When a packet of data arrives at a router, the router will examine its header to determine where it should send the packet. If the router does not know how to reach the specified destination address, it sends the message to an adjacent router via a neighboring node. Each router stores a table of addresses it knows about. These tables are known as routing tables.

Source de l’article sur DZONE

/par

How to Design an MVP Web Page

,

Learning how to design an MVP webpage or website could be one of the best things you can do as a site creator in today’s digital world.

In a fast-paced landscape, where customer preferences and technology are constantly changing, most companies don’t have time to dedicate months or years to each web project. The longer you take to complete your website, the more likely your creation will be outdated by the time you hit “publish.” That’s why countless creators are beginning to take a different approach.

To avoid wasting time, money, and effort on something that doesn’t deliver a significant return on investment, designers are now building “Minimum Viable Products,” or “MVPs.”

Here’s what you need to know about creating your MVP webpage.

What is MVP Web Design?

Typically, the “MVP” development process is most common in the app or software creation world. It refers to when a developer builds the simplest version of a technology capable of achieving specific goals. For instance, if a company wanted to create an ecommerce app, they would design a simple tool capable of listing products, enabling payments, and tracking orders.

After launching the MVP product, the company or developer would check to ensure it had the right impact on the target market and generated positive results. Using feedback and analytics, the developer would then begin to add new features one at a time.

MVP design aims to ensure you’re developing the best, most valuable product for your audience while getting your solution to market as quickly as possible.

The same strategy in MVP app and software design can also apply to website creation. Rather than building a highly complicated website with multiple features straightaway, the designer would focus on creating a single page equipped with the essential elements.

For instance, instead of building an entire site for your online course, you may develop a single-page website where customers can learn about the system, sign up, and pay for their membership. The great thing about an MVP web page is it allows companies to start advertising their solution, product, or service quickly, with the minimum initial investment.

How to Create an MVP Web Page

Creating an MVP web page is similar to designing any Minimum Viable Product. Throughout the project, the focus will be on keeping the development process simple while collecting as much feedback as possible.

Here’s how you’d get started with an MVP web page.

Step 1: Planning

Planning is an important stage in any web design project. It’s particularly crucial in the MVP landscape, where you need to define the most critical features of your webpage or website to ensure it’s “viable” for your needs. The initial planning stage can sometimes be the lengthiest part of the process, depending on the amount of research you need to do.

For the most part, web designers and companies will begin by conducting market research. This means examining crucial concepts intended to drive your strategy, such as:

  • Your target audience: Who are you trying to target with this web page, and what will they need from your site? A user persona can be helpful if you don’t already have one.
  • Competitors: Who are your main competitors in this space, and what do their web pages offer? Which features do you need to replicate or avoid?
  • Goal setting: What is the main objective of this web page? What do you need it to do, and what might it need to accomplish in the future?

The key to MVP web page planning is ensuring you look holistically at your project without thinking too far ahead. The site you create should be capable of scaling and expanding in the future, but it shouldn’t have too many features from day one.

Step 2: Creating Your Feature List

Once you’ve done your research and formed the foundations of your plan, it’s time to list all the features your MVP web page needs to have. Unfortunately, this is where the process can get a little complicated. It’s easy to start adding capabilities and components that aren’t necessary to make your site more exciting or competitive.

As worrying as it can feel to release a very basic web page, remember your focus is on rapid growth and development. With this in mind, concentrate on narrowing your feature lists down into:

  • Initial must-have capabilities: First, decide what your web page can’t thrive without. If the primary goal of your page is to sell software subscriptions, then you’ll need to implement tools for collecting member information and payments.
  • Next stage functionality: Consider the features you might add once you’ve confirmed your webpage is effective. This will allow you to ensure you’re creating a platform that can expand to suit future needs.
  • Possible future requirements: You can also list features that might be helpful in the future but don’t necessarily need to be implemented immediately. For instance, if you’re selling an online course, you might create a separate page where people can sign up to learn about future lessons.

Step 3: Finding the Right Software

Next, you’ll need to decide how to build your web page. There are several options available to today’s designers. An open-source solution is usually the best route for designers who need to create something specific from scratch. However, if the factor that makes your solution “viable” is unique, you may need access to code to bring your idea to life.

Alternatively, if you’re building a basic webpage capable of something like collecting customer email addresses or facilitating transactions, you might be able to use an off-the-shelf tool. CMS services for web designers can reduce the work and expense involved in creating a minimum viable product.

For instance, you might use a tool like Wix or Squarespace to edit a pre-existing template and simply drag-and-drop the features you need into the right places. On the other hand, if you’re planning on adding more functionality to your site down the line, it’s worth checking if any builder you will use has the right level of flexibility. Many tools will allow you access to code, advanced features, and essential module-based building functions.

Step 4: Implement Your Analytics

One of the essential parts of an MVP workflow is feedback. When you roll out your MVP, you’ll be looking for insights, guidance, and analytics to help you decide what your next steps are going to be. As a result, MVP workflows are based heavily on experimentation.

This means you’re going to need the right analytical tools in place to track crucial information. You can implement tools for collecting customer feedback directly. It’s also worth having a system in place for tracking metrics like:

  • Conversion rate;
  • Traffic numbers;
  • User behavior;
  • Most used/least used features;
  • Technical site performance;
  • Bounce rate;
  • Average time spent on the page.

While Google Analytics is one of the most popular tools for collecting insights in the MVP website design world, various other options are available. You can even find tools with in-built heatmaps to see how people navigate your site more effectively.

It’s also worth having A/B testing components in place. This will allow you to test the different “new” features you add to your web pages over time and examine how they influence your conversions and support your goals. For example, you can use A/B testing to explore the impact of everything from CTA button colors to webpage copy and offers.

Creating Your MVP Web Page

In the fast-paced web development and design world, the old-fashioned and slow approach to designing web pages is growing increasingly less common. Instead, an MVP strategy may be the best bet for companies looking to go to market faster, collect insights from their target audience, and accelerate growth.

Though getting used to this design strategy initially can be challenging, it can save you significant time, resources, and money in the long term.

 

HTML vector created by vectorjuice – www.freepik.com

Source

The post How to Design an MVP Web Page first appeared on Webdesigner Depot.

Source de l’article sur Webdesignerdepot

/par

Getting Started With Service Calls and Serverless Workflow

,

Workflows are great for orchestrating services, functions, or events. They provide out-of-the-box features to make your applications resilient, reliable, and simple.

But currently, each cloud vendor has its workflow solution. AWS has Step Functions, Google has Google Workflows, Microsoft has Azure Durable functions, and so on. The lack of a common way to define workflows becomes an issue when you need to migrate or host your applications on more than one cloud vendor. It also limits the potential for creating tools and infrastructures that support several platforms. This is what the Serverless Workflow specification addresses.

Source de l’article sur DZONE

/par

WordPress Website Analysis: Before & After ImageEngine

,


WordPress is by far the world’s most popular CMS. Not only does it dominate the CMS market with a 64% market share, but it also powers 39.6% of all websites. It has taken the internet by storm by democratizing the web for all. Now, anyone can build, manage, and host a successful website without needing a college degree or coding expertise.

However, while WordPress is great at managing many technical aspects, it still can’t do everything for you. Built mostly on PHP, there are often concerns regarding how performant WordPress is. And, with performance impacting everything from bounce rates to SEO rankings to conversions, it’s something that should be on your radar too.

If you don’t know it yet, images are one of the main causes of slow-loading websites. In recent years, WordPress has stepped up its efforts to try and help users with image optimization out-of-the-box.

Still, as we’ll show, it’s not a total solution, and there is still plenty you can do to deliver better experiences on your WordPress website through image optimization.

What is WordPress Image Optimization? Why is it Important?

Simply put, image optimization is anything you do to make images load faster on your website pages. Almost all websites that use images can benefit from some form of image optimization, even those using WordPress.

Why?

Well, performance is a hugely significant factor when it comes to the competitiveness of your website today.

Google has also made performance an increasingly important factor when it comes to SEO rankings. In fact, performance is a direct ranking signal that carries significant weight.

Google’s Page Experience Update that went live in 2021 has been the biggest move in that direction yet. Soon, Google might even use visual indicators in SERP results to distinguish high-performing websites from the rest.

In Google’s own words, “These signals measure how users perceive the experience of interacting with a web page and contribute to our ongoing work to ensure people get the most helpful and enjoyable experiences from the web.”

So, Why Should We Target Images For Performance Optimization?

According to Google, images are the largest contributor to page weight. Google has also singled out image optimization specifically as the factor with the most untapped potential for performance optimization.

This problem isn’t going away soon. According to data by the HTTP Archive, there are roughly 967.5 KB bytes of image data on desktop web pages and 866.3 KB of image data on mobile pages. This is an increase of 16.1% and 38.8%, respectively, over the last five years.

Thanks to popular e-commerce tools like Woocommerce, it’s estimated that up to 28% of all online sales happen on WordPress websites.

And don’t forget, images are both a key part of conveying information to the user and integral to the design of your website. If they take significantly longer to load than your text, for example, it will negatively impact the user experience in a variety of ways.

In summary, optimized images help your WordPress website by:

  • Improving user satisfaction.
  • Improving various traffic metrics, like bounce rates, time-on-page, etc.
  • Boosting your SEO rankings.
  • Contributing to higher conversions (and sales).

How Does Image Optimization in WordPress Work?

WordPress is so popular because it’s a CMS (content management system) that allows anyone to build, design, and manage a website without any coding or advanced technical experience. Advanced features can be installed with just a few clicks, thanks to plugins, and you rarely have to touch the code behind your website unless you want to make some unique modifications.

In short, using a CMS like WordPress shields you from many of the day-to-day technicalities of running a website.

WordPress Image Optimization: What It Can Do

As we mentioned, one of the main reasons WordPress is so popular is because it takes care of many of the technical aspects of running a website. With that in mind, many think that WordPress should also automatically take care of image optimization without them having to get involved at all.

Unfortunately, that’s not really the case.

True, WordPress does offer some built-in image optimization. Whenever you upload an image to WordPress, it currently compresses the quality to about 82% of the original (since v4.5).

In v4.4, WordPress also introduced responsive image syntax using the srcset attribute. This creates four breakpoints for each image you upload according to the default WordPress image sizes:

  • 150px square for thumbnails
  • 300px width for medium images
  • 768px max-width for medium_large images
  • 1024px max-width for large images.

Here you can see an example of the actual responsive syntax code generated by WordPress:

<img loading="lazy" src="https://bleedingcosmos.com/wp-content/uploads/2021/12/33-1024x683.jpg" alt="" class="wp-image-9" width="610" height="406" srcset="https://bleedingcosmos.com/wp-content/uploads/2021/12/33-1024x683.jpg 1024w, https://bleedingcosmos.com/wp-content/uploads/2021/12/33-300x200.jpg 300w, https://bleedingcosmos.com/wp-content/uploads/2021/12/33-768x512.jpg 768w, https://bleedingcosmos.com/wp-content/uploads/2021/12/33-1536x1024.jpg 1536w" sizes="(max-width: 610px) 100vw, 610px">

Depending on the screen size of the device from which a user visits your webpage, WordPress will let the browser pick the most appropriately sized image. For example, the smallest version for mobile displays or the largest for 4K Retina screens, like those of a Mac.

While this may seem impressive, it’s only a fraction of what can be achieved using a proper image optimization solution, as we’ll show later.

Lastly, WordPress implemented HTML native default lazy loading for all images starting with version 5.5.

So, in short, WordPress offers the following image optimization capabilities baked-in:

  • Quality compression (limited)
  • Responsive syntax (up to 4 breakpoints)
  • Lazy loading

WordPress Image Optimization: What it Cannot Do

There are other issues many have with both the implementation of image compression and responsive syntax as it’s used by WordPress. This leads to some users even purposefully deactivating WordPress’ built-in image optimization so they can fully take control of it themselves.

Here are some of the reasons why:

  • WordPress uses a very basic form of quality compression. It does not use advanced technologies like AI and machine learning algorithms to compress images while maintaining maximum visual quality. It’s also lossy compression, so the quality is lost for good. You can clearly see the difference between an original HD image and the compressed version created by WordPress.
  • WordPress only compresses most images by up to 20%, while advanced image optimization tools can reduce all image sizes intelligently by up to 80%.
  • Responsive syntax can provide significant performance improvements over simply uploading a single HD image to be served on all devices and screens. However, it’s still only limited to a set number of breakpoints (typically 3 or 4). Since it’s not dynamic, a whole spectrum of possible image sizes is not created or used.
  • Responsive syntax code is not scalable and can quickly lead to code that’s bloated, messy, and hard to read.
  • WordPress doesn’t accelerate image delivery by automatically caching and serving them via a global CDN, although this can be done using other tools.

Another important optimization feature that WordPress does not have is auto-conversion to next-gen image file formats. Different image formats offer different performance benefits on different devices. Some formats also enable higher levels of compression while maintaining visual fidelity.

Next-gen formats like WebP, AVIF, and JPEG-2000 are considered to be the most optimal formats on compatible devices. For example, until recently, WebP would be the optimal choice on Chrome browsers, while JPEG-4000 would be optimal on Safari browsers.

However, WordPress will simply serve images in the same formats in which they were originally uploaded to all visitors.

How to Measure the Image Performance of a WordPress Website?

As the undisputed king of search engines, we’ll base most of our performance metrics on guidelines established by Google.

Along with its various performance updates, Google has released a number of guidelines for developers as well as the tools to test and improve their websites according to said guidelines.

Google introduced Core Web Vitals as the primary metrics for measuring a web page’s performance and its effect on the user experience. Thus, Core Web Vitals are referred to as “user-centric performance metrics.” They are an attempt to give developers a testable and quantifiable way to measure an elusive and abstract concept such as “user experience.”

Combined with a number of other factors, Core Web Vitals constitute a major part of the overall page experience signal:

You can find a complete introduction to Core Web Vitals here. However, they currently consist of three main metrics:

  • LCP (Largest Contentful Paint): The time it takes the largest above-the-fold element on your page to load. This is typically a full-sized image or hero section.
  • FID (First Input Delay): The delay from the moment a user first interacts with an element on the page until it becomes responsive.
  • CLS (Cumulative Layout Shift): The visual stability with which the elements on a page load.

Here is an illustration of how these metrics are scored:

While these are the three most important metrics to optimize, they are not the only ones. Google still measures other metrics like the FCP (First Contentful Paint), SI (Speed Index), as well as the TTFB (Time to First Byte), TBT (Total Blocking Time), and TTI (Time to Interactive).

A number of these metrics are directly affected by the images used on your web pages. For example, LCP, FCP, and SI are direct indicators of how fast the content of your web page loads and depends on the overall byte size of the page. However, it can also indirectly affect FID by keeping the main thread busy with rendering large amounts of image content or the perceived CLS by delaying the time it takes large images to load.

These metrics apply to all websites, whether they are custom-made or built using a CMS like WordPress.

When using tools like Lighthouse or PageSpeed Insights, you’ll also get scored based on other flags Google deems important. Some of them are specific to images, such as properly sizing images and serving images in next-gen formats.

If you only use built-in WordPress image optimization, you’ll get flagged for the following opportunities for improvement:

Some of the audits it will pass, however, are deferring offscreen images (lazy loading) and efficiently coding images (due to compression):

A Better Way to Optimize WordPress Images: ImageEngine

Billions of websites are all vying for prime real estate on Google SERPs, as well as the attention of an increasingly fussy internet-using public. Every inch matters when it comes to giving your website a competitive advantage.

So, how can you eliminate those remaining performance flags and deliver highly optimized images that will keep both your visitors and Google happy?

Sure, you could manually optimize images using software like PhotoShop or GIMP. However, that will take you hours for each new batch of images. Plus, you still won’t benefit from any automated adaptive optimization.

A more reasonable solution in today’s fast-paced climate is to use a tool developed specifically for maximum image optimization: an image CDN like ImageEngine.

ImageEngine is an automated, cloud-based image optimization service using device detection as well as intelligent image compression using the power of AI and machine learning. It can reduce image payloads by up to 80% while maintaining visual quality and accelerating delivery around the world thanks to its CDN with geographically dispersed PoPs.

Why is ImageEngine Image Optimization Better Than WordPress?

When making a head-to-head comparison, here are the reasons why ImageEngine can deliver better performance:

  • Device Detection: ImageEngine features built-in device detection. This means it picks up what device a visitor to your website is using and tailors its optimization strategy to what’s best for that specific device.
  • Client hints: By supporting client hints, ImageEngine has access to even more information regarding the device and browser to make better optimization decisions.
  • Next-gen formats: Based on optimal settings, ImageEngine automatically converts and serves images in next-gen formats like WebP, AVIF, JPEG2000, and MP4 (for GIFs).
  • Save data header: When a Chrome user has save-data mode enabled, ImageEngine will automatically compress images more aggressively to save on data transfer.
  • CDN with dedicated edge servers: ImageEngine will automatically cache and serve your optimized image assets using its global CDN. Each edge server has device awareness built-in to bring down latency and accelerate delivery. You can also choose to prioritize specific regions.

So, the key differentiator is that ImageEngine can tailor optimizing images for what’s optimal for each of your visitors. ImageEngine is particularly good at serving mobile visitors thanks to WURFL device detection, which can dynamically resize images according to most devices and screen sizes in use today. As of now, this is a completely unique capability that none of its competitors offer.

It allows for far better and more fine-tuned optimization than WordPress’ across-the-board approach to compression and responsive syntax.

If you want, you could turn off WordPress responsive syntax and compression, and you would still experience a performance increase using ImageEngine. However, ImageEngine also plays nice with responsive syntax, so it’s not completely necessary unless you want to serve the highest-fidelity/low-byte-size images possible.

How Does ImageEngine Work with WordPress?

The process ImageEngine uses to integrate with WordPress can be broken down into a few easy steps:

  • Sign up for an ImageEngine account: ImageEngine offers three pricing plans depending on the scale and features you need as well as a no-commitment 30-day free trial.
  • Specify your image origin: This tells ImageEngine where to find the original versions of your images. For a WordPress website, you can just use your domain, e.g., https://mywordpresswebsite.com. ImageEngine will then automatically pull the images you’ve uploaded to your WordPress website.

  • Copy the Delivery Address: After you create an account and specify your image origin, ImageEngine will provide you with a Delivery Address. A Delivery Address is your own unique address that will be used in your <img> tags to point back to the ImageEngine service. Delivery Addresses may be on a shared domain (imgeng.in) or customized using a domain that you own. A Delivery Address typically looks something like {random_string}.cdn.imgeng.in. If your images are uploaded to the default WordPress folder /wp-content/uploads/, you can access your optimized images from ImageEngine simply by changing your website domain. For example, by typing {imageengine_domain}.cdn.imgeng.in/wp-content/uploads/myimage.jpg into your browser, you’ll see the optimized version of that image. Just press the copy button next to the Delivery Address and use it in the next step configuring the plugin.

  • Install the ImageEngine Optimizer CDN plugin: The plugin is completely free and can be installed just like any other plugin from the WordPress repository.
  • Configure and enable ImageEngine Plugin in WordPress: Just go to the plugin under “ImageEngine” in the main navigation menu. Then, copy and paste in your ImageEngine “Delivery Address,” tick the “Enabled” checkbox, and click “Save Changes” to enable ImageEngine:

Now, all ImageEngine basically does is replace your WordPress website domain in image URLs with your new ImageEngine Delivery Address. This makes it a simple, lightweight, and non-interfering plugin that works great with most other plugins and themes. It also doesn’t add unnecessary complexity or weight to your WordPress website pages.

ImageEngine vs Built-in WordPress Image Optimization

So, now let’s get down to business by testing the performance improvement you can expect from using ImageEngine to optimize your image assets.

To do this test, we set up a basic WordPress page containing a number of high-quality images. I then used PageSpeed Insights and the Lighthouse Performance Calculator to get the performance scores before and after using ImageEngine.

Importantly, we conducted this test from a mobile-first perspective. Not only has mobile internet traffic surpassed desktop traffic globally, but Google themselves have committed to mobile-first indexing as a result.

Here is a PageSpeed score using the Lighthouse calculator for WordPress with no image optimization:

As we can see, both Core Web Vitals and other important metrics were flagged as “needs improvement.” Specifically, the LCP, FCP, and TBT. In this case, both the LCP and FCP were a high-res featured image at the top of the page.

If we go to the opportunities for improvement highlighted by PageSpeed, we see where the issues come from. We could still save as much as 4.2s of loading time by properly resizing images and a further 2.7s by serving them in next-gen formats:

So, now let’s see how much ImageEngine can improve on that.

The same test run on my WordPress website using ImageEngine got the following results:

As you can see, we now have a 100 PageSpeed score. I saved roughly 2.5s on the SI (~86%) as well as roughly 1.7s on the LCP (~60%). There was also a slight improvement in the FCP.

Not only will you enjoy a stronger page experience signal from Google, but this represents a tangible difference to visitors regarding the speed with which your website loads. That difference will lead to lower bounce rates, increased user satisfaction, and more conversions.

There was also a 53% overall reduction in the total image payload. This is impressive, considering that it’s on top of WordPress’ built-in compression and responsive syntax.

Conclusion

So, as someone with a WordPress website, what can you take away from this?

Well, first of all, WordPress does feature some basic image optimization. And while not perfect, it should help you offer reasonable levels of performance, even if you use a lot of image content.

However, the caveat is that WordPress applies aggressive, across-the-board compression, which will lead to a noticeable reduction in visual quality. If you use WordPress for any type of website where premium quality images are important, this is a concern — for example, as a photography portfolio, exhibition, or image marketplace like Shutterstock.

By using ImageEngine, you can reduce image payloads and accelerate delivery even further without compromising too harshly on visual quality. What’s more, ImageEngine’s adaptive image optimization technology will provide greater improvements to more of your visitors, regardless of what device(s) they use to browse the web.

Whether or not you still want to use WordPress’ built-in optimizations, ImageEngine will deliver significant improvements to your user experience, traffic metrics, and even conversions.

Plus, true to the spirit of WordPress, it’s extremely simple to set up without any advanced configuration. Just sign up for ImageEngine in 3 easy steps, install the plugin, integrate ImageEngine by copy/pasting your image domain, and you’re good to go.

 

[ This is a sponsored post on behalf of ImageEngine ]

Source

The post WordPress Website Analysis: Before & After ImageEngine first appeared on Webdesigner Depot.

Source de l’article sur Webdesignerdepot

/par

Fantastic Symbols and Where to Find Them (Part 1)

,

Symbolization is a technique that allows you to translate machine memory addresses to human-readable symbol information (symbols).

Why do we need to read what programs do anyways? We usually do not need to translate everything to a human-readable format when things run smoothly. But when things go south, we need to understand what is going on under the hood. Symbolization is needed by introspection tools like debuggers, profilers, core dumps, or any other program that needs to trace the execution of another program. While a target program is executing on a machine, these types of programs capture the stack traces of the program that is being executed.

Source de l’article sur DZONE

/par