This document provides tips and tricks for optimizing web page performance and security. It discusses topics like:
- Psychological time durations and the 20% rule for perceivable time differences
- Techniques for preloading content to improve perceived performance
- The importance of response times under 100ms and rendering at 60 frames/second
- Optimizing images, fonts, CSS, JavaScript, and HTTP caching headers
- Defenses against cross-site scripting (XSS) attacks like HTTP headers and content security policy
- Mitigations for clickjacking using X-Frame-Options response headers
This document discusses strategies for improving mobile application performance through caching and reducing API requests. It recommends caching responses from APIs and content delivery networks to reduce load on servers. Developer should add Cache-Control headers to responses to ensure caching by clients. The document also provides tips for organizing files in Amazon S3 buckets to optimize storage and retrieval performance.
This is my latest version of my client side performance presentations. This has been presented at TechEd NZ 2009 & to a couple of .NET user groups around NZ. This presentation focuses on the basics of client-side performance tuning.
Presenter - Mary White
Mary is the owner of MW for Designs (MWforDesigns.com) and she teaches website design with Html, CSS , Dreamweaver and WordPress in the Johnson County Community College continuing education department.
• Learn why you NEED to optimize your website
• Learn how to check your website speed
• Learn all the "small things" you can do to speed up your website
• Discover the most useful WordPress plugins to optimize your website
• Need more? Get some advanced tips to speed up your site
• Learn basic maintenance techniques to KEEP your site running fast
Metrics, metrics everywhere (but where the heck do you start?)Tammy Everts
You want a single, unicorn metric that magically sums up the user experience, business value, and numbers that DevOps cares about, but so far, you're just not getting it. So where do you start? In this talk at the 2015 Velocity conference in Santa Clara, Cliff Crocker and I walked through various metrics that answer performance questions from multiple perspectives -- from designer and DevOps to CRO and CEO.
Service workers your applications never felt so goodChris Love
If you have not heard of service workers you must attend this session. Service Workers encompass new browser capabilities, along with shiny new version of AJAX called Fetch. If you have every wanted your web applications to experience many native application features, such as push notifications, service workers is the gateway to your happiness. Have you felt confused by application cache and going offline? Well service workers enable offline experiences in a much cleaner way. But that is not all! If you want to see some of the cool new, advanced web platform features that you will actually use come to this session!
https://love2dev.com/blog/what-is-a-service-worker/
Web Performance in the Age of HTTP2 - Topconf Tallinn 2016 - Holger BartelHolger Bartel
Web performance optimisation has been gaining ground and is slowly getting more of its deserved recognition.
Nevertheless, much of our time on the web is still used up by waiting. To decrease our wait time and improve the web’s overall performance, this integral part of user experience needs further promotion.
Waiting and the perception of time itself, is reason enough to explore some of the psychological effects time has on our users, too.
Passing time also plays a big role in the evolution of technologies. Through the history of HTTP we have reached the latest version as HTTP/2, which will turn some of our existing web performance best practices on their head and into the new anti-patterns of today.
This document discusses strategies for improving mobile application performance through caching and reducing API requests. It recommends caching responses from APIs and content delivery networks to reduce load on servers. Developer should add Cache-Control headers to responses to ensure caching by clients. The document also provides tips for organizing files in Amazon S3 buckets to optimize storage and retrieval performance.
This is my latest version of my client side performance presentations. This has been presented at TechEd NZ 2009 & to a couple of .NET user groups around NZ. This presentation focuses on the basics of client-side performance tuning.
Presenter - Mary White
Mary is the owner of MW for Designs (MWforDesigns.com) and she teaches website design with Html, CSS , Dreamweaver and WordPress in the Johnson County Community College continuing education department.
• Learn why you NEED to optimize your website
• Learn how to check your website speed
• Learn all the "small things" you can do to speed up your website
• Discover the most useful WordPress plugins to optimize your website
• Need more? Get some advanced tips to speed up your site
• Learn basic maintenance techniques to KEEP your site running fast
Metrics, metrics everywhere (but where the heck do you start?)Tammy Everts
You want a single, unicorn metric that magically sums up the user experience, business value, and numbers that DevOps cares about, but so far, you're just not getting it. So where do you start? In this talk at the 2015 Velocity conference in Santa Clara, Cliff Crocker and I walked through various metrics that answer performance questions from multiple perspectives -- from designer and DevOps to CRO and CEO.
Service workers your applications never felt so goodChris Love
If you have not heard of service workers you must attend this session. Service Workers encompass new browser capabilities, along with shiny new version of AJAX called Fetch. If you have every wanted your web applications to experience many native application features, such as push notifications, service workers is the gateway to your happiness. Have you felt confused by application cache and going offline? Well service workers enable offline experiences in a much cleaner way. But that is not all! If you want to see some of the cool new, advanced web platform features that you will actually use come to this session!
https://love2dev.com/blog/what-is-a-service-worker/
Web Performance in the Age of HTTP2 - Topconf Tallinn 2016 - Holger BartelHolger Bartel
Web performance optimisation has been gaining ground and is slowly getting more of its deserved recognition.
Nevertheless, much of our time on the web is still used up by waiting. To decrease our wait time and improve the web’s overall performance, this integral part of user experience needs further promotion.
Waiting and the perception of time itself, is reason enough to explore some of the psychological effects time has on our users, too.
Passing time also plays a big role in the evolution of technologies. Through the history of HTTP we have reached the latest version as HTTP/2, which will turn some of our existing web performance best practices on their head and into the new anti-patterns of today.
Cache is King discusses the importance of caching for website performance. It shows that enabling caching through techniques like setting Cache-Control headers can reduce page load times significantly. Specifically, using max-age to set expiration times for cacheable assets avoids unnecessary HTTP requests. For dynamic content, no-cache must be used to prevent caching. The document advocates being explicit with caching directives and measuring caching behavior to identify opportunities to optimize websites for cached access.
Optimizing web performance (Fronteers edition)Dave Olsen
Today, a web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our web sites look good across that spectrum of devices we may forget that we need to make sure that our web sites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet.
In this session we’ll look at the tools that can help you understand, measure and improve the web performance of your web sites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply.
Stress Test Drupal on Amazon EC2 vs. RackSpace cloudAndy Kucharski
RackSpace vs Amazon EC2 stress evaluation of responding to user registration on a Drupal 6 ubercart ecommerce site test using LoadStorm.
We have stood up an eCommerce site built with Drupal6 and ubercart and stood it up on two most popular cloud providers. We then built a stress test using LoadStorm and tried to push the sites and servers to the limit. Here are the results of our experiment.
This document discusses ways to improve the speed of a website. It identifies several methods: checking loading times; selecting an appropriate hosting provider; optimizing content like images; removing unnecessary plugins; employing caching; using a content delivery network; and optimizing the database. Faster sites boost rankings, conversions and traffic. Regular maintenance is needed to ensure optimal performance over time.
There's no question about it. A slow website will cost you sales. WordPress website speed can sometimes be difficult to tackle.
We've put together a guide on improving your WordPress website loading times. Our WordPress speed guide is perfect for those who want to learn how to speed up their WordPress website in 2019.
Let us know what you think!
The document discusses various challenges in test automation scripting and proposes solutions. It addresses issues like spending too much time on scripting, lack of maintainability due to copy-pasting code, synchronization between the browser and scripts, handling dynamic elements, ensuring maintainability of scripts, and coding without QA. The proposed solutions include using page object model to reduce scripting time, introducing intermediary classes to avoid copy-pasting, using explicit waits to synchronize scripts and browser, locating elements based on tags for dynamic elements, separating definition from implementation for maintainability, and running test cases multiple times to eliminate need for separate QA.
According to HTTPArchive.org the average web page is now larger than the original DOOM installation application. Today's obese web is leading to decreased user satisfaction, customer engagement and increased cost of ownership. Research repeatedly tells us customers want faster user experiences. Search engines reward faster sites with better rankings. Small, fast sites are cheaper to develop, maintain and operate.
- Why has the web become obese?
- What actions can developers and stakeholders do to combat their morbid obesity?
- Are these actions expensive or hard to implement?
This session reviews what customers want and how to identify your web site's love handles. More importantly you will learn simple techniques to eliminate the fat and create a healthy, maintainable, affordable web development lifestyle that produces the user experiences your customers want to engage with over and over.
Web performance optimization can be done at three levels - general, server-side, and technology. At the general level, techniques include minimizing HTTP requests, optimizing images, minifying files, avoiding redirects and empty sources. Server-side optimizations involve techniques like content delivery networks, cookie-free domains, caching, and gzip compression. At the technology level for dynamic sites like Joomla, optimizations include flushing buffers early and optimizing database queries. Performance can be measured using various online tools.
The document discusses the frontend single point of failure (SPOF) problem caused by blocking JavaScript and CSS files. It provides examples of popular websites, code libraries, widgets, and content management systems that contribute to frontend SPOFs. The document recommends solutions for browsers, widget owners, CMS developers, and site owners to address this issue through asynchronous loading of resources and better monitoring of frontend performance.
Measuring Web Performance (HighEdWeb FL Edition)Dave Olsen
Today, a web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our web sites look good across that spectrum of devices we may forget that we need to make sure that our web sites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet.
In this session we’ll look at the tools that can help you understand, measure and improve the web performance of your web sites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply.
This presentation builds upon Dave’s “Optimization for Mobile” chapter in Smashing Magazine’s “The Mobile Book.”
This talk was given at HighEdWeb Florida.
1. CMP.LY is a venture-funded startup that offers social media monitoring, measurement, and compliance solutions for Fortune 100 companies. Their tool, CommandPost, allows users to track, measure, analyze, and optimize social media engagement and address compliance needs.
2. The presentation discusses performance tuning of MongoDB deployments. Common issues addressed include concurrency, unindexed queries, increasing replication lag, and a plummeting oplog window. MongoDB Management Service (MMS) helps identify and diagnose these issues.
3. Solutions to the issues included schema changes, message queues, sharding, adding appropriate indexes, and making updates smaller to reduce replication lag and improve the oplog window. MMS alerts and backups
How to Flip a Switch for 55% Web Performance GainsCloudflare
Join Cloudflare and FlySafair, the most on-time-airline in the world that rapidly grew to take 30% of the South African market in its young 3 year existence. Learn about the steps FlySafair took to improve the user experience of its e-commerce web presence and how Cloudflare Argo smart routed 4 million website requests and saved 15 days of load time per month.
implement lighthouse-ci with your web development workflowWordPress
This presentation is about implementing the performance as first approach in web development and a bit of real case study. Then implement the Lighthouse-CI in the development workflow to keep the site performance high.
Measuring What Matters - Fluent Conf 2018Cliff Crocker
Cliff Crocker discusses best practices for measuring what matters and applying an understandable methodology that achieves what we are all after: happier users.
Implementing a Responsive Image StrategyChris Love
Applications must implement responsive web design strategies today. However most developers are not experienced in responsive techniques. More over images have provided a difficult hurdle for developers and business stakeholders to make responsive.
A proper responsive web design strategy increases return on investment, reduces long term maintenance requirements and improves application performance. Images create many challenges in implementing responsive design.
This session will explain what responsive images are. How new web standards have enabled manageable responsive image practices. We will go over tooling and techniques to enable responsive images in your developer and line of business workflows.
When you leave this session you will have actionable knowledge of responsive images, techniques, tooling and workflow options you can apply to your projects now.
Performance Tuning On the Fly at CMP.LY Using MongoDB Management ServiceMichael De Lorenzo
Using MongoDB, you’re able to develop and deploy applications quickly. But how do you maintain high performance when you have a small team and are developing at a breakneck pace? At CMP.LY, we tune our applications on the fly using key performance metrics from MongoDB Management Service. Identifying bottlenecks before they become production issues let’s us keep our focus on our application. You’ll walk away from this talk with a clear understanding of how to leverage MMS and key performance metrics to keep your application, and team, humming as your MongoDB usage grows.
Website speed is a crucial aspect of on page SEO everyone can control. Your goal is to be interactive in under 3 seconds, even on a basic phone over a 3G connection.
However, most web sites have so many requests and large payloads this time limit or budget cannot be achieved. In fact, the average web page takes 22 seconds to load, according to Google's research.
But what if I told you there is a way to offload or even avoid loading page assets until they are needed?
This can give your website a distinct advantage over your competition because not only will Google like your pages better so will your visitors!
Speed up your site! #wcmtl2015 by Meagan HanesMeagan Hanes
7 ways to speed up a website are discussed: choosing a lightweight theme, disabling unnecessary plugins, optimizing files by minifying CSS/JS and image compression, implementing caching, using a content delivery network (CDN), cleaning up the database, and optimizing theme and plugin performance. The document provides details on each method, emphasizing measuring site speed before and after changes, using appropriate tools, and backing up the site when making optimizations. The overall message is that many small improvements can significantly increase site speed.
The technology landscape is changing with every passing year. The technology landscape is changing with every passing year. More people than ever before are now online. It also means that the ways that people are accessing the web all over the world are changing, too.
In this talk, I talk about the different techniques coupled with few case studies on how to improve front-end performance.
The document discusses website performance and optimization. It notes that nearly half of users expect a site to load within 2 seconds and will abandon a site taking longer than 3 seconds. Common issues causing poor performance are bloated templates, unnecessary code, and too many HTTP requests. Suggested optimizations include minimizing assets, prioritizing visible content, image optimization, caching, compression, and lazy loading. Case studies show significant speed improvements after implementing optimizations. Metrics like Speed Index measure how quickly visible content displays to influence perceived performance.
BD Conf: Visit speed - Page speed is only the beginningPeter McLachlan
How can we beat the speed of light and make visits faster? Pre-fetching is one way we can make resources available before they're needed. This talk explores challenges in mobile visit performance and discusses the design of a generic pre-fetching system.
Cache is King discusses the importance of caching for website performance. It shows that enabling caching through techniques like setting Cache-Control headers can reduce page load times significantly. Specifically, using max-age to set expiration times for cacheable assets avoids unnecessary HTTP requests. For dynamic content, no-cache must be used to prevent caching. The document advocates being explicit with caching directives and measuring caching behavior to identify opportunities to optimize websites for cached access.
Optimizing web performance (Fronteers edition)Dave Olsen
Today, a web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our web sites look good across that spectrum of devices we may forget that we need to make sure that our web sites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet.
In this session we’ll look at the tools that can help you understand, measure and improve the web performance of your web sites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply.
Stress Test Drupal on Amazon EC2 vs. RackSpace cloudAndy Kucharski
RackSpace vs Amazon EC2 stress evaluation of responding to user registration on a Drupal 6 ubercart ecommerce site test using LoadStorm.
We have stood up an eCommerce site built with Drupal6 and ubercart and stood it up on two most popular cloud providers. We then built a stress test using LoadStorm and tried to push the sites and servers to the limit. Here are the results of our experiment.
This document discusses ways to improve the speed of a website. It identifies several methods: checking loading times; selecting an appropriate hosting provider; optimizing content like images; removing unnecessary plugins; employing caching; using a content delivery network; and optimizing the database. Faster sites boost rankings, conversions and traffic. Regular maintenance is needed to ensure optimal performance over time.
There's no question about it. A slow website will cost you sales. WordPress website speed can sometimes be difficult to tackle.
We've put together a guide on improving your WordPress website loading times. Our WordPress speed guide is perfect for those who want to learn how to speed up their WordPress website in 2019.
Let us know what you think!
The document discusses various challenges in test automation scripting and proposes solutions. It addresses issues like spending too much time on scripting, lack of maintainability due to copy-pasting code, synchronization between the browser and scripts, handling dynamic elements, ensuring maintainability of scripts, and coding without QA. The proposed solutions include using page object model to reduce scripting time, introducing intermediary classes to avoid copy-pasting, using explicit waits to synchronize scripts and browser, locating elements based on tags for dynamic elements, separating definition from implementation for maintainability, and running test cases multiple times to eliminate need for separate QA.
According to HTTPArchive.org the average web page is now larger than the original DOOM installation application. Today's obese web is leading to decreased user satisfaction, customer engagement and increased cost of ownership. Research repeatedly tells us customers want faster user experiences. Search engines reward faster sites with better rankings. Small, fast sites are cheaper to develop, maintain and operate.
- Why has the web become obese?
- What actions can developers and stakeholders do to combat their morbid obesity?
- Are these actions expensive or hard to implement?
This session reviews what customers want and how to identify your web site's love handles. More importantly you will learn simple techniques to eliminate the fat and create a healthy, maintainable, affordable web development lifestyle that produces the user experiences your customers want to engage with over and over.
Web performance optimization can be done at three levels - general, server-side, and technology. At the general level, techniques include minimizing HTTP requests, optimizing images, minifying files, avoiding redirects and empty sources. Server-side optimizations involve techniques like content delivery networks, cookie-free domains, caching, and gzip compression. At the technology level for dynamic sites like Joomla, optimizations include flushing buffers early and optimizing database queries. Performance can be measured using various online tools.
The document discusses the frontend single point of failure (SPOF) problem caused by blocking JavaScript and CSS files. It provides examples of popular websites, code libraries, widgets, and content management systems that contribute to frontend SPOFs. The document recommends solutions for browsers, widget owners, CMS developers, and site owners to address this issue through asynchronous loading of resources and better monitoring of frontend performance.
Measuring Web Performance (HighEdWeb FL Edition)Dave Olsen
Today, a web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our web sites look good across that spectrum of devices we may forget that we need to make sure that our web sites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet.
In this session we’ll look at the tools that can help you understand, measure and improve the web performance of your web sites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply.
This presentation builds upon Dave’s “Optimization for Mobile” chapter in Smashing Magazine’s “The Mobile Book.”
This talk was given at HighEdWeb Florida.
1. CMP.LY is a venture-funded startup that offers social media monitoring, measurement, and compliance solutions for Fortune 100 companies. Their tool, CommandPost, allows users to track, measure, analyze, and optimize social media engagement and address compliance needs.
2. The presentation discusses performance tuning of MongoDB deployments. Common issues addressed include concurrency, unindexed queries, increasing replication lag, and a plummeting oplog window. MongoDB Management Service (MMS) helps identify and diagnose these issues.
3. Solutions to the issues included schema changes, message queues, sharding, adding appropriate indexes, and making updates smaller to reduce replication lag and improve the oplog window. MMS alerts and backups
How to Flip a Switch for 55% Web Performance GainsCloudflare
Join Cloudflare and FlySafair, the most on-time-airline in the world that rapidly grew to take 30% of the South African market in its young 3 year existence. Learn about the steps FlySafair took to improve the user experience of its e-commerce web presence and how Cloudflare Argo smart routed 4 million website requests and saved 15 days of load time per month.
implement lighthouse-ci with your web development workflowWordPress
This presentation is about implementing the performance as first approach in web development and a bit of real case study. Then implement the Lighthouse-CI in the development workflow to keep the site performance high.
Measuring What Matters - Fluent Conf 2018Cliff Crocker
Cliff Crocker discusses best practices for measuring what matters and applying an understandable methodology that achieves what we are all after: happier users.
Implementing a Responsive Image StrategyChris Love
Applications must implement responsive web design strategies today. However most developers are not experienced in responsive techniques. More over images have provided a difficult hurdle for developers and business stakeholders to make responsive.
A proper responsive web design strategy increases return on investment, reduces long term maintenance requirements and improves application performance. Images create many challenges in implementing responsive design.
This session will explain what responsive images are. How new web standards have enabled manageable responsive image practices. We will go over tooling and techniques to enable responsive images in your developer and line of business workflows.
When you leave this session you will have actionable knowledge of responsive images, techniques, tooling and workflow options you can apply to your projects now.
Performance Tuning On the Fly at CMP.LY Using MongoDB Management ServiceMichael De Lorenzo
Using MongoDB, you’re able to develop and deploy applications quickly. But how do you maintain high performance when you have a small team and are developing at a breakneck pace? At CMP.LY, we tune our applications on the fly using key performance metrics from MongoDB Management Service. Identifying bottlenecks before they become production issues let’s us keep our focus on our application. You’ll walk away from this talk with a clear understanding of how to leverage MMS and key performance metrics to keep your application, and team, humming as your MongoDB usage grows.
Website speed is a crucial aspect of on page SEO everyone can control. Your goal is to be interactive in under 3 seconds, even on a basic phone over a 3G connection.
However, most web sites have so many requests and large payloads this time limit or budget cannot be achieved. In fact, the average web page takes 22 seconds to load, according to Google's research.
But what if I told you there is a way to offload or even avoid loading page assets until they are needed?
This can give your website a distinct advantage over your competition because not only will Google like your pages better so will your visitors!
Speed up your site! #wcmtl2015 by Meagan HanesMeagan Hanes
7 ways to speed up a website are discussed: choosing a lightweight theme, disabling unnecessary plugins, optimizing files by minifying CSS/JS and image compression, implementing caching, using a content delivery network (CDN), cleaning up the database, and optimizing theme and plugin performance. The document provides details on each method, emphasizing measuring site speed before and after changes, using appropriate tools, and backing up the site when making optimizations. The overall message is that many small improvements can significantly increase site speed.
The technology landscape is changing with every passing year. The technology landscape is changing with every passing year. More people than ever before are now online. It also means that the ways that people are accessing the web all over the world are changing, too.
In this talk, I talk about the different techniques coupled with few case studies on how to improve front-end performance.
The document discusses website performance and optimization. It notes that nearly half of users expect a site to load within 2 seconds and will abandon a site taking longer than 3 seconds. Common issues causing poor performance are bloated templates, unnecessary code, and too many HTTP requests. Suggested optimizations include minimizing assets, prioritizing visible content, image optimization, caching, compression, and lazy loading. Case studies show significant speed improvements after implementing optimizations. Metrics like Speed Index measure how quickly visible content displays to influence perceived performance.
BD Conf: Visit speed - Page speed is only the beginningPeter McLachlan
How can we beat the speed of light and make visits faster? Pre-fetching is one way we can make resources available before they're needed. This talk explores challenges in mobile visit performance and discusses the design of a generic pre-fetching system.
Web Performance tuning presentation given at http://www.chippewavalleycodecamp.com/
Covers basic http flow, measuring performance, common changes to improve performance now, and several tools and techniques you can use now.
AD113 Speed Up Your Applications w/ Nginx and PageSpeededm00se
My slide deck from my session, AD113: Speed Up Your Applications with Nginx + PageSpeed, at MWLUG 2015 in Atlanta, GA at the Ritz-Carlton.
For more, see:
- https://edm00se.io/self-promotion/mwlug-ad113-success
- https://github.com/edm00se/AD113-Speed-Up-Your-Apps-with-Nginx-and-PageSpeed
Supercharge Application Delivery to Satisfy UsersNGINX, Inc.
Users expect websites and applications to be quick and reliable. A slow user experience can have a significant impact on your business. Join us for this webinar where we will show you a number of ways you can use NGINX and other tools and techniques to supercharge your application delivery, including:
- Client Caching
- Content Delivery Networks (CDN)
- OCSP stapling
- Dynamic Content Caching
View full webinar on demand at http://bit.ly/nginxsupercharge
Pearls and Must-Have Tools for the Modern Web / .NET DeveloperOfer Zelig
We are all flooded with information: blogs, videos, millions of open source projects. In this presentation I share my insights: what are the must-know and must-have tools, frameworks and techniques you can use today (or at least know about) in order to be up-to-date.
AWS re:Invent 2016: Amazon CloudFront Flash Talks: Best Practices on Configur...Amazon Web Services
In this series of 15-minute technical flash talks you will learn directly from Amazon CloudFront engineers and their best practices on debugging caching issues, measuring performance using Real User Monitoring (RUM), and stopping malicious viewers using CloudFront and AWS WAF.
Best Practices for WordPress in EnterpriseTaylor Lovett
10up open sourced their WordPress Best Practices (PHP, JavaScript, tools, and workflows) in late 2014. As the Director of Web Engineering at 10up, I drove this project and am the lead contributor to the docs. These Best Practices allow developers to build sites that scale, perform, and are secure one sites receiving millions of page views per day. They also standardize development practices in such a way that facilitates team collaboration. This talk will highlight some important parts of the Best Practices and reveal some valuable tips about how we (10up) engineer some of the most complex and most viewed WordPress sites in the world.
Pagespeed measures how fast the content of a page loads. Core Web Vitals is a set of metrics that measure real-world user experience for loading performance, interactivity, and visual stability of the page.
“Progressive Web Apps (PWAs) are web applications that load like regular web pages or websites but can offer the user functionality such as working offline, push notifications, and device hardware access traditionally available only to native mobile applications. PWAs are an emerging technology that combine the open standards of the web offered by modern browsers to provide benefits of a rich mobile experience”
Lets look at an example of what a performant website can look like. This discuss what concepts should we be considering when looking at website performance. Next we will go over two areas pertaining to website performance: 1) website performance tweaks that you as a web developer can directly make 2) website performance tweaks that you may have to work with your hosting provider or IT department to achieve
This document discusses best practices for using WordPress in an enterprise setting. It covers topics like caching, database queries, browser performance, maintainability, security, third party code, and team workflows. The presentation was given by Taylor Lovett, who is the Director of Web Engineering at 10up and a WordPress plugin creator and core contributor.
Ensuring your site is usable by any user, anywhere in the world, on their device, with their network speed by focusing on uptime, speed and performance, critical content, accessibility, and usability.
Progressive Web Apps (PWAs) provide an app-like user experience on the web by making use of modern web capabilities. PWAs use a web app manifest and service workers to work offline, receive push notifications, and load quickly. The web app manifest allows developers to define how the app should appear to users, while service workers cache assets to provide an app-shell experience regardless of network availability. Tools like sw-precache and sw-toolbox help generate service worker code and implement common caching strategies. By following best practices for manifests, service workers, and other features, web apps can achieve many of the benefits of native mobile apps without needing to be installed from an app store.
In this presentation, Neera Prajapati of Valuebound has discussed on performance optimization in Drupal 8. She has also talked about a range of topics like why website loading time matters? Importance of web performance and how to boost it? and others.
My talking points for the presentation on optimization of modern web applications. It is a huge topic, and I concentrated mostly on technical aspects of it.
10 things you can do to speed up your web app today stir trek editionChris Love
Why is Web Performance Optimization Important and what are some things developers can do to ensure their applications perform well and please end users?
Similar to Tips tricks deliver_high_performing_secure_web_pages (20)
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
This presentation provides valuable insights into effective cost-saving techniques on AWS. Learn how to optimize your AWS resources by rightsizing, increasing elasticity, picking the right storage class, and choosing the best pricing model. Additionally, discover essential governance mechanisms to ensure continuous cost efficiency. Whether you are new to AWS or an experienced user, this presentation provides clear and practical tips to help you reduce your cloud costs and get the most out of your budget.
GraphRAG for Life Science to increase LLM accuracyTomaz Bratanic
GraphRAG for life science domain, where you retriever information from biomedical knowledge graphs using LLMs to increase the accuracy and performance of generated answers
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Salesforce Integration for Bonterra Impact Management (fka Social Solutions A...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on integration of Salesforce with Bonterra Impact Management.
Interested in deploying an integration with Salesforce for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Trusted Execution Environment for Decentralized Process MiningLucaBarbaro3
Presentation of the paper "Trusted Execution Environment for Decentralized Process Mining" given during the CAiSE 2024 Conference in Cyprus on June 7, 2024.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
TrustArc Webinar - 2024 Global Privacy SurveyTrustArc
How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/temporal-event-neural-networks-a-more-efficient-alternative-to-the-transformer-a-presentation-from-brainchip/
Chris Jones, Director of Product Management at BrainChip , presents the “Temporal Event Neural Networks: A More Efficient Alternative to the Transformer” tutorial at the May 2024 Embedded Vision Summit.
The expansion of AI services necessitates enhanced computational capabilities on edge devices. Temporal Event Neural Networks (TENNs), developed by BrainChip, represent a novel and highly efficient state-space network. TENNs demonstrate exceptional proficiency in handling multi-dimensional streaming data, facilitating advancements in object detection, action recognition, speech enhancement and language model/sequence generation. Through the utilization of polynomial-based continuous convolutions, TENNs streamline models, expedite training processes and significantly diminish memory requirements, achieving notable reductions of up to 50x in parameters and 5,000x in energy consumption compared to prevailing methodologies like transformers.
Integration with BrainChip’s Akida neuromorphic hardware IP further enhances TENNs’ capabilities, enabling the realization of highly capable, portable and passively cooled edge devices. This presentation delves into the technical innovations underlying TENNs, presents real-world benchmarks, and elucidates how this cutting-edge approach is positioned to revolutionize edge AI across diverse applications.
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
FREE A4 Cyber Security Awareness Posters-Social Engineering part 3Data Hops
Free A4 downloadable and printable Cyber Security, Social Engineering Safety and security Training Posters . Promote security awareness in the home or workplace. Lock them Out From training providers datahops.com
1. Tips & Tricks
to deliver high performing and secure web pages
GauravVerma, Harsh Agarwal
2. Why?
• Why do time and
performance matter?
• Why don’t we like to wait?
• Why does faster not always
mean better in the online
world?
3. PERFORMANCE OPTIMIZATION
process of improving the delivery speed of services, feedback or any
other type of response action in order to meet a user’s expectation.
4. Psychological time durations
• 0.1 to 0.2 seconds: range of the
maximum acceptable response time to
simulate instantaneous behavior
• 0.5 to 1 seconds: maximum
response time for immediate behavior
• 2 to 5 seconds: flow or optimal
experience as a state when people
experience concentration, absolute
absorption in an activity
• 5 to 10 seconds: user would still be
focused on their task but would
become easily distracted
10 seconds as the
absolute maximum time
of a user’s attention span
5. 20% RULE
• In 1834, Ernst Heinrich Weber,
postulated a law that defines
“Just Noticeable
Difference” (JND) as the
minimum difference in
stimulation that a person can
detect most of the time.
• Fechner applied the law to
the measurement of
sensations, setting the basis for
the science of psychophysics.
6. 20% RULE
• This work by Weber and
Fechner is known to us as
the Weber-Fechner Law.
• Practical experiments in
psychophysics show that
time intervals are prone to
a JND of between 7% to
18% on average for shorter
periods
7. 20% RULE
• Good rule of thumb is to
simplify the Weber-Fechner
Law into a 20% rule.
• In order for users to barely
see a difference in time
duration, it has to be
changed by a minimum of
20%
10. Regression allowance
• Technique also works in the
opposite direction
• If you are developing a feature that
slows down your web page, you
could apply the 20% rule to
determine whether the
performance decrease will be
noticed by users at all.
• Allowing our code to be a bit
slower without harming the user
experience is called regression
allowance.
11. Neutralization
Time neutralization occurs when the time difference between two services is
noticeable but does not influence the user’s preference of one service over another
12. • We cannot decrease the
search response time to 2
seconds.
• If 2 seconds is out of reach,
the next best solution would
be to use the 20%
• Rule of regression allowance
relative to the competitor’s
time: 2 seconds + 20% = 2.4
seconds.
But if we cannot achieve 2 seconds, then 2.4 seconds is probably also
out of reach.
13. • Thankfully, there exists a
“magical” psychological
threshold.
• Time durations longer than
this threshold will be
perceived by the user as
being closer to 5 seconds.
• Time durations shorter
than that threshold will be
perceived as being closer to
2 seconds.
This threshold proved to be predictable and is found at the
geometric mean, instead of an arithmetical one.
√(2 × 5) ≈ 3.2 seconds
15. Preemptive start
• dns-prefetch:This is useful for pre-resolving
domain names that are found lower down on
the page.
• preconnect:This hint is used not only to pre-
resolve a domain name, but to initiate a full
connection handshake.
• prefetch:This hint has the lowest priority and is
used to prefetch assets or resources required
for future navigation.
• prerender:This enables background pre-
rendering of an entire page, with all of its assets.
17. • Instantaneous (0.1–0.2s): No
need for any activity indicator.
• Immediate (0.5–1s): spinners or
very basic progress indicator
• Optimal experience (1.0-5.0s):
optimal indicator would be a class D
or a simplified class A indicator –
there is no need to draw a user’s
attention to additional information.
• Attention Span (5-10s): we
should show a dynamic indicator of
class A or B where the advance of
the process is clear.
19. Be 20% faster than your fastest competitor.
• Focus on important metrics
other than full-page loading
time.
• First meaningful paint - the
time required for a page to
display its primary content
• Time to interactive - the
time at which a page
appears to be ready
enough that a user can
interact with it
UsefulTools:
•WebpageTest
•Lighthouse by Google
•Pagespeed Insights
20. 100-millisecond response time, 60 frames per second.
• Do your best to provide
feedback in less than 100
milliseconds after initial
input.
• Each frame of animation
should be completed in less
than 16 milliseconds,
thereby achieving 60 frames
per second
• Because the browser needs
time to paint the new
frame to the screen your
code should finish executing
before hitting the 16.6
milliseconds mark.
21. First meaningful paint under 1.25 seconds
• Your ultimate goal should
be a start rendering time
under 1.0 second and a
SpeedIndex value under
1000 (on a fast connection)
• For the first meaningful
paint, count on 1250
milliseconds at most.
• For mobile, a start
rendering time under 3
seconds for 3G on a mobile
device is acceptable.
22. Progressive enhancement
• Keeping progressive
enhancement as the guiding
principle of your front-end
architecture and
deployment is a safe bet
• Design and build the core
experience first, and then
enhance the experience
with advanced features for
capable browsers
23. Accelerated Mobile Page
• You can achieve good
performance without them,
but AMP does provide a
solid performance
framework with a free
content delivery network
(CDN)
• You could build progressive
web AMPs, too.
24. Consider micro-optimization and progressive booting
• Display skeleton screens instead
of loading indicators.
• Look for modules and
techniques to speed up the
initial rendering time
• Use server-side rendering to
get a quick first meaningful
paint.
• Also include some minimal
JavaScript to keep the time-to-
interactive close to the first
meaningful paint.
25. Are HTTP cache headers set properly?
• Double-check that expires,
cache-control, max-age and
other HTTP cache headers
have been set properly.
• If resources are static, they
should be cached
indefinitely - you can just
change their version in the
URL when needed.
• If possible, use Cache-
control: immutable,
designed for fingerprinted
static resources, to avoid
revalidation *
* Support only in Firefox
26. Limit third-party libraries, and load JavaScript asynchronously.
• As developers, we have to
explicitly tell the browser
not to wait and to start
rendering the page.
• The way to do this for
scripts is with the defer and
async attributes in HTML
• In practice, it turns out we
should prefer defer to async
• limit the impact of third-
party libraries and scripts,
especially with social sharing
buttons and <iframe>
embeds
27. Are images properly optimized?
• As far as possible, use
responsive images with
srcset, sizesand the
<picture> element
• mozJPEG improves the
start rendering time by
manipulating scan levels
• Pingo for PNG, Lossy GIF
for GIF and SVGOMG for
SVG.
For background images,
exporting photos from
Photoshop with 0 to 10% quality
can be absolutely acceptable as
well.
28. Are web fonts optimized?
• start rendering text in the fallback right away, and load fonts
asynchronously
• You might be able to get away with locally installed OS fonts as
well.
• If you can’t serve fonts from your server and are relying on
third-party hosts, make sure to use Web Font Loader
29. Push critical CSS quickly
• To ensure that browsers
start rendering your page as
quickly as possible, add
critical CSS inline in the
<head> of the page.
• With HTTP/2, critical CSS
could be stored in a
separate CSS file and
delivered via a server push
without bloating the HTML.
30. 14 Rules for Faster-Loading Web Sites
• Make Fewer HTTP Requests
• Use a Content Delivery
Network
• Add an Expires Header
• Gzip Components
• Put Stylesheets at theTop
• Put Scripts at the Bottom
• Avoid CSS Expressions
• Make JavaScript and CSS
External
• Reduce DNS Lookups
• Minify JavaScript
• Avoid Redirects
• Remove Duplicate Scripts
• Configure ETags
• Make AJAX Cacheable
33. WHAT IS XSS ?
• XSS refers to client-side code injection attack
• Occurs when a web application makes use of
unvalidated or unencoded user input within the
output it generates.
• Most commonly using a script in JS.
• TwoType : Reflected, Persistent
34. HOW XSS WORKS ?
1.The attacker injects a payload in the website’s database by
submitting a vulnerable form with some malicious JavaScript
35. HOW XSS WORKS ?
2.The victim requests the web page from the website.
36. HOW XSS WORKS ?
3.The website serves the victim’s browser the page with the
attacker’s payload as part of the HTML body.
37. HOW XSS WORKS ?
4.The victim’s browser will execute the malicious script inside the
HTML body.
38. HOW XSS WORKS ?
In this case it would send the victim’s cookie to the attacker’s
server, after which the attacker can use the victim’s stolen cookie
for impersonation.
43. WHY CSP ?
• CSP gives you a language to define where the
browser can load resources from.
• You can white list origins for scripts, images, fonts,
stylesheets, etc in a very granular manner.
48. WHY?
• Clickjacking is a thing
• Eg: Sharing or liking links on Facebook
• PlayingYouTube videos to gain views
• Downloading and running a malware
• Making users follow someone onTwitter
52. WHAT DOES IT DO?
• MIME sniffing is browser feature.
• Browsers inspect the contents while ignoring the
content type header.
• This might open XSS vulnerability.
• X-Content-Type-Options overrides the default
browser behaviour.
55. THE FINE PRINT
• There are three different options for cookies that
you should be aware of.
• secure; will only be served over HTTPS only
• HttpOnly; prevents js from accessing cookies
• SameSite; helps defend against CSRF attacks.
56. THE FINER PRINT
• SameSite cookies are still experimental and not
yet supported by all browsers.
• If you use a cookie only to identify a server-side
session, the HttpOnly flag should be set.
60. HOWTO STOP IT ?
• SynchronizerTokens
• Any state changing operation requires a secure
random token
• Token is unique per user session
• Cryptographically secure large random value