JSJ 334: “Web Performance API” with Dan Shappir
JavaScript Jabber9 Loka 2018

JSJ 334: “Web Performance API” with Dan Shappir

Panel: Special Guests: Dan Shappir (Tel Aviv)In this episode, the panel talks with Dan Shappir who is a computer software developer and performance specialist at Wix.com. As Dan states, his job is to make 100 million websites (hosted on the Wix platform) load and execute faster! Past employment includes working for companies, such as: Ericom, Ericom Software, and BackWeb. He studied at Technion Institute of Management and currently lives in Tel Aviv, Israel. The panel talks about web performance API among other things. Check it out!Show Topics:1:29 – Charles: Let us know who you are and why you’re famous!1:39 – “Hello!” from Dan Shappir.2:25 – Charles: You should say that you go to EACH site EVERY day out of the millions of sites out there.2:53 – Charles: My mom mentioned Wix to me at first. My mom teaches High School Math.3:16 – Dan: Yes that is our mission statement. That everyone can get a website without the knowledge of how to build a website.3:52 – Aimee makes her comments.3:59 – Dan: On our platform we try to offer people flexibility. There are bounds and limits, but people can do their very own thing, though. To make Wix faster because as we add more features and functionality that is our goal.4:40 – Chuck: Okay, I know how to make X perform a little bit better. You are looking at a platform that controls TONS of sites, how do you even go about that?4:58 – Dan: It is more difficult then that. We have millions of users leveraging the platform but there are a lot of developers in Wix who are developing the platform. I don’t think anyone at Wix has a total grasp of the complexity of the platform that we built. We have hundreds of frontend people working on our platform. All of them have pieces to the kingdom. We have processes in place with code reviews and whatnot, but there is so much going on. There is a change every 2 minutes, 24/7. We need to make sure progressing instead of regressing. 6:54 – Aimee: I think it was interesting in one of the links you sent over. Because you know when something is getting worse you consider that a bug.7:15 – Dan: It is more than a bug because if we see regression in performance then that is a problem. I can literally see any part of the organization and say, “stop” if it will7:57 – Chuck: We are talking about performance, but what does that mean? What measures are there?8:15: Dan: We are looking at performance can mean different things in different contents. User sites, for example, most important aspect is load time. How quickly the page loads and gets open to the viewer to that specific site. When they click something they want it instantly and no drag time. It does change in different contexts.9:58 – Chuck: People do talk about load time. People have different definitions of it.10:12: Dan: Excellent question. When you look at the different sites through Wix. Different people who build sites – load time can mean something else to everybody. It can mean when you see the MAIN text or the MAIN image. If it’s on an ECON site then how soon can they purchase or on a booking site, how long can the person book X product.I heard someone at a conference say that load time is when: HERO TEXT And HERO IMAGE are displayed.12:14 – Chuck: What is faster React or Vue?12:21 – NEW HOST: Not sure. It all depends.12:34 – Dan: We are big into React. We are one of the big React users outside of Facebook. I joined Wix four years ago, and even back then we were rebuilding our framework using React. One of our main modifications is because we wanted to do server-side rendered.13:27 – Christopher asks Dan a question.14:16 – Dan: We are in transition in this regard. Before we were totally client-site rendered, and that was the case until middle of last year. Then we deployed...Dan: We are 100% server-side rendered now. Some things we are still using JavaScript. We have another project going on now and it’s fully CSS, and little JavaScript as possible. What you might want to do with that site is...You might get in a few months every Wix site will be visible even if JavaScript is disabled.16:26 – Aimee adds in her comments and observations to this topic.16:55 – Dan: We don’t want things displayed incorrectly before it lays out. We hide the content while it’s downloading then make it visible. They lay-outing are done faster, because...17:44 – Christopher asks Dan a question.18:04 – Dan: I got into API...Either you are moving forward or are you moving back. AKA – You are either progressing or regressing.Different stages:1.) Development stage2.) Pre-Production (automated tools that check the performance with specific use cases)3.) Check it out!It’s beneficial to use these APIs.21:11 – Christopher: What is performance APIs?21:38 – Dan: There is a working group – Todd from Microsoft and others who are exposing the information (that is available in the browser) out into the browser. When the browser downloads a certain source (image, font, etc.) it can measure the various stages of downloading that feature. You have these different sages of downloading this resource. The browser can measure each of these stages and then expose them to you. Basically it’s for the browser to expose this information to you and in a way that is coherent and uniform. It essentially maintains this buffer that puts performance entries sequentially.Dan continues explaining this topic in detail.25:55 – Dan: You have this internal buffer...28:45 – Advertisement – Sentry – They support opensource.29:39 – Christopher: everything you are saying seems that I can use this or that tab right now...Why would I prefer the API to something visual, hypothetically?30:03 – Dan: Three Different Stages. (See above.)This information is very, very helpful during the developmental stage. Say you got a link from someone...Dan mentions: Performance.mark 34:04 – Aimee: When you were talking about resource-ends. Many people don’t know what this is. Can you spend 2-3 minutes about how you guys are using these? Are there people can add for big bang for their buck?34:41 – Dan: This might want to be a topic for its own podcast show.Dan gives a definition of what a resource-end means.Go back to fonts as an example.Pre-connect for example, too.39:03 – Dan: Like I said, it’s a huge topic.You have to exercise some care. Bandwidth is limited. Make sure you aren’t blocking other resources that you do need right now.40:02 – Aimee: Sounds like a lot of great things to tap into. Another question I have is about bundling.40:27 – Dan: One of the things that we try to do (given that we are depending on the JavaScript we are downloading) we need to download JavaScript content to the client side. It has been shown often that JS is the most impactful resources that you need to download. You really want to be as smart as possible with that. What is even more challenging is the network protocols are changing.Dan continues to go in-depth about this topic. Dan: What we have found is that you want to strive to bundle resources together.44:10 – Aimee: Makes sense.44:15 – Dan continues talking about this topic.45:23 – Chuck asks two questions. (First question is now and second question is at 51:32.)2 Questions:1. You gather information from web performance AI - What system is that?45:42 – Dan: I am not the expert in that. I will try not to give misleading information. Actually let me phrase it different. There are 3rd party tools that you can use leverage in your website. IF you are building for commercial reasons I highly recommend that you use performance-monitoring solution. I am not going to advertise one because there are tons out there. We ended up rolling out our own infrastructure because our use case is different than most.At a conference I talked with a vendor and we talked about...51:32 – 2nd Question from Charles to Dan: Now you’ve gathered this information now what to you do? What patterns? What do you look for? And how do you decide to optimize things?54:23 – Chuck: Back to that question, Dan. How should they react to it and what are they looking for54:41 – Dan: Three main ways: 1.) Generate alerts 2.) See trends over long period of time 3.) Looking at real-time graphs.Frontend developer pro is that likely being woken up in the middle of the night is lower. We might be looking at the real time graph after we deployed...57:31 – Advertisement – Get a Coder Job!58:10 – Picks!Links:

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Jaksot(725)

What's New in JavaScript: Latest Language Updates and Features - JSJ 666

What's New in JavaScript: Latest Language Updates and Features - JSJ 666

Hey, everyone. Welcome back to another exciting episode of JavaScript Jabber, part of the Top End Devs Network. I'm your host, Charles Max Wood, joined by our amazing panelist, Dan Shappir. In this episode, we dive into the latest developments in the world of JavaScript as we kick off a new year. You might recall we covered this topic about a year and a half ago in episode 590.  Today, we're revisiting the updates to see what's progressed and what's newly introduced in the JavaScript standard.Dan Shappir offers his expertise as we explore features that have recently been added to the language. From promise.allSettled, a feature that's been around for about five years but often underutilized, to array method enhancements like .at and Object.hasOwn, there's a ton to unpack. We'll also delve into exciting new library additions like findLast for arrays, efficient array copying methods and improvements in set operations that make JavaScript more powerful and developer-friendly than ever.The episode isn't just about the features that have already landed; we'll also touch on what's in the pipeline with proposals in various stages of development, including exciting concepts like temporal for better date and time handling. Whether you're a JavaScript pro or just keen to stay updated on the latest trends, this discussion is packed with insights to level up your coding game.So, grab your headphones, stay tuned, and let's explore the exciting world of new JavaScript features together!Become a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

22 Tammi 1h 26min

Reflections on Technology Trends, AI Impact, and Memorable Episodes - JSJ 665

Reflections on Technology Trends, AI Impact, and Memorable Episodes - JSJ 665

Welcome to another riveting episode of Top End Devs! In today's "Year in Review" special, hosts Charles, AJ, Dan, and Steve Edwards take you on a retrospective journey through their most memorable moments and thought-provoking discussions of the year. From the amusing and insightful exchanges with influential guests like Rich Harris and Kyle Simpson to their deep dives into emerging tech trends like Svelte 5 and AI integration in development, this episode has it all.They also explore Charles's experience transitioning from a Mac to a high-performance System76 machine, Dan's favorite and least favorite tech trends, and AJ's admiration for profitable and customer-focused approaches in the industry. Expect a blend of technical expertise, humor with those beloved dad jokes, and personal reflections that make this podcast uniquely engaging.So, get ready as we reflect on the year's highlights, laugh at the dad jokes that have become fan favorites, and look forward to exciting developments in the tech world with your favorite panelists.PicksAJ - 100 Days of Rejection (Therapy)AJ - https://www.youtube.com/playlist?list=PLamouX6QxWIuTHuaArIOzdorWoYaF6cU5AJ - John Sonmez: Eye Contact & SmirkingAJ - John Sonmez: How to Become a ManAJ - EvalPlus LeaderboardAJ - OllamaCharles -HeatCharles - Heat: Pedal to the MetalCharles - Hit Refresh by Satya NadellaCharles -  American Icon by Bryce HoffmanCharles - System76Charles - Wizard's First Rule (Sword of Truth, Book 1) (Sword of Truth, 1)Dan - A Man on the Inside (TV Series 2024Dan - The Best Syria Breakdown You'll Ever Hear - Thomas SmallDan - Master of the Five MagicsBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

7 Tammi 2h 5min

Innovation and Framework Adoption - JSJ 664

Innovation and Framework Adoption - JSJ 664

In this episode, Charles, AJ, and Dan explore the intricacies of team dynamics, technological choices, and the challenges of web development with our distinguished panel. Joining them is a very special guest, the legendary Uncle Bob Martin. They delve into team collaboration and decision-making, with Uncle Bob emphasizing the importance of reasonable debates and team buy-in when it comes to mental models and project directives. Dan discusses how, in startups, the initial developer often ends up making key decisions.They also touch on technological choices, including the complications of inheriting decisions from previous team members and the ever-topical debate on relational databases influenced by marketing pressures. Uncle Bob shares his seasoned insights into React Framework inconsistencies and the philosophy behind state-driven design.They tackle the separation of business logic from frameworks to maintain purity and independence in code. There's also a lively discussion about starting with functional prototypes, and the influence of Apple’s focus on UI on their success.Additionally, they explore Uncle Bob’s controversial stance on web frameworks, the dynamics of framework adoption, and the role of technical decisions in hiring. There are fascinating comparisons between framework popularity and historical tech stories, including the evolution of Apple’s innovations and the contributions from Xerox PARC.Finally, as they wrap up, they have insightful pick recommendations from the panelists, covering everything from the NBA season and engaging TV series to board games and book recommendations—a little something for everyone.Join them for an enlightening journey through the nuances of modern development practices, historical tech anecdotes, and personal insights from some of the industry's top minds. This episode promises to be a treasure trove of knowledge and experience for any developer. Let's get started!SocialsLinkedIn: Robert MartinPicksAJ - How to Start a Startup - A course Y Combinator taught at StanfordCharles - MLEM: Space Agency | Board GameDan - NBA SeasonDan - The Day of the Jackal (TV Series 2024Uncle Bob - 'The Cloud Fugitive' | David Heinemeier Hansson | NTK # 001Become a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

31 Joulu 20241h 45min

Revolutionizing API Syntax and Schema Management with Jazz Framework - JSJ 663

Revolutionizing API Syntax and Schema Management with Jazz Framework - JSJ 663

In today's episode, Charles and AJ are joined by Anselm Eickhoff, a trailblazing full-stack software engineer. Anselm delves into the world of "Local First" software development and the innovative tool he’s developed, "Jazz." They explore how Jazz leverages schema information for type inference and runtime validation, enabling real-time collaboration and seamless offline functionality. They dive into the simplifications brought by Jazz's API changes, the flexibility offered through open protocols, and the local-first approach using CRDTs.They also tackle Jazz’s impressive backend infrastructure and its shift to direct disk storage, along with insights into the challenges and emerging support structures faced by early adopters. Anselm shares real-world applications, advanced analytics capabilities, and the future outlook for Jazz, emphasizing performance, resilience, and data privacy.Plus, stay tuned for a lighthearted detour into board games and TV recommendations, as well as updates on Charles’ AI Dev Boot Camp and exciting developments on the Top End Devs platform. This episode is packed with cutting-edge insights and practical advice for developers looking to integrate advanced real-time features and streamline their app development processes. SocialsLinkedIn: Anselm EickhoffPicksAJ - Dune 2-Film Collection (Blu-Ray + Digital)Charles - Imperial Miners | Board GameBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

24 Joulu 20241h 25min

Painting Roses, Eating Marshmallows and Network Protocols - JSJ 662

Painting Roses, Eating Marshmallows and Network Protocols - JSJ 662

Welcome to another insightful episode of the JavaScript Jabber podcast, hosted by Charles alongside our expert panelists Dan and AJ. Today, they are thrilled to be joined by Avishai Ish-Shalom a seasoned technologist with an eye for challenging conventions in the tech world. In this episode, Avishai takes us through fascinating discussions comparing industrial food products to technological abstractions, including his unique perspective on the “marshmallow effect” and the evolving complexities of virtualization.They delve into the challenges of backward compatibility in modern tech, using real-world parallels like AWS virtual storage options, and discuss the impact of technologies like Docker and cloud services on our understanding of underlying infrastructures. Charles shares his upgrade journey from an aging Mac laptop to a powerful System76 desktop for AI tasks, reflecting the changing demands on development environments.Listen in as they explore the nuances of binary vs. textual protocols, the importance of future-proofing legacy systems, and Avishai's compelling arguments in his articles "Don't Paint the Roses" and "The Marshmallow Effect." Plus, they discuss Avishai's career evolution and the intellectual challenges faced by today’s engineers in the rapidly advancing tech landscape. Whether you’re a casual listener or a tech enthusiast, this episode promises to offer valuable insights and thought-provoking discussions. Stay tuned!SocialsLinkedIn: Avishai Ish-ShalomPicksAJ - Deku Deals Avishai - marimo | a next-generation Python notebookCharles - Challengers! Beach Cup | Board GameDan - The Penguin (TV Mini Series 2024)Dan - BlueskyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

17 Joulu 20241h 33min

Structuring Node.js Applications Part 2: Dependency Management, Package Managers, Proper API Usage, etc.- JSJ 661

Structuring Node.js Applications Part 2: Dependency Management, Package Managers, Proper API Usage, etc.- JSJ 661

This is the second part of the deep dive into the essential practices and principles for successful Node.js development. Our esteemed guests, Michael Dawson, James Snell, Matteo Collina, and Natalia Venditto, bring their extensive expertise to the table, discussing key topics like how to manage dependencies in a Node.js project.SocialsLinkedIn: James SnellLinkedIn: Michael DawsonLinkedIn: Matteo CollinaLinkedIn: Natalia VendittoPicksCharles - Gnome Hollow | Board GameCharles - Reacher (TV Series 2022Michael - MakerWorld: Download Free 3D Printing Models Become a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

11 Joulu 20241h 22min

TypeScript Success: Integration, Type Checking, and Generics - JSJ 660

TypeScript Success: Integration, Type Checking, and Generics - JSJ 660

In this episode, Dan sits down with TypeScript expert Matt Pocock to dive deep into the world of TypeScript migration, learning curves, and developer challenges. They explore why having a TypeScript "wizard" is crucial for teams transitioning from JavaScript and how TypeScript's integration with development environments like Visual Studio Code has been a game changer.Dan and Matt discuss the importance of real-time typechecking, the community's role in TypeScript's success, and practical strategies for migrating large codebases to TypeScript. You'll hear about Matt's journey from drama school to becoming a DevRel expert, his contributions to the XState library, and his philosophy of type-driven development. Together, they highlight TypeScript's advantages, such as enhanced code reliability and the nuanced benefits of explicit vs. inferred types.Whether you're a seasoned developer or just starting with TypeScript, this episode offers valuable insights and actionable advice to help you harness the full power of static typing in your projects. Tune in for a fascinating discussion that underscores the value of "boring" code, the need for continual learning, and the ongoing evolution of software development practices. Stay with us as we unravel the intricacies of TypeScript and share practical tips to elevate your coding journey.SocialsLinkedIn: Matt PocockBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

3 Joulu 20241h 20min

React and Beyond: The Importance of Learning DOM APIs - JSJ 659

React and Beyond: The Importance of Learning DOM APIs - JSJ 659

In today's episode, Charles, AJ and Steve are joined by guests Corey Brown for a rich discussion on the importance of understanding foundational concepts in software development. They explore the balance between leveraging high-level frameworks like React and the necessity of grasping the underlying technologies to troubleshoot effectively and build robust applications. They emphasize the value of comprehending core language features to write better software and solve problems efficiently. Corey reflects on the passion within the software development community and the hidden costs of over-relying on third-party dependencies like the infamous "left pad" incident.As the conversation unfolds, they debate whether sticking to frameworks or delving into deeper technologies leads to long-term success. They share practical insights on the benefits of reading source code, continuously learning, and the significance of core platform APIs. Additionally, the episode includes light-hearted "picks" from the panelists, including humorous resources and personal anecdotes. Join them as they dissect these critical perspectives and share valuable advice for both novice and seasoned developers alike. Let's get started!PicksAJ - Grug BrainAJ - Creeds of CraftsmanshipAJ - AJQuery v3.0.3Cory - Palm Paradise #206Become a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

26 Marras 20241h 23min

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