The document discusses optimizing Magento hosting to increase online sales. It describes a case study of a travel website that experienced a catastrophic event due to a locked database from high query volumes. The root cause was identified and a solution was implemented using a "McManus Magic Shield" to block cache rebuilds if one was already in progress. Load testing results showed that code quality and site configuration are major factors in Magento performance. Best practices for development like reducing requests and using caching can significantly improve scalability. Faster page loading directly correlates to increased conversion rates.
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.
Building faster websites: web performance with WordPressJohannes Siipola
Nobody likes a slow website. Faster sites lead to happier users, and happier users lead to more conversions and revenue. That’s why you should take performance into account in your WordPress project. Learn what practical techniques and WordPress plugins to use in order to optimize your site for speed.
Walmart proves the obvious, devknob wonders why people don't understand why page speed matters. This has been true and known to be true since the beginning of the internet. Do you think people won't get distracted easily and bounce when they're surfing on 2g, 3g and even 4g connections? Page speed matters, devknob is probably the best page speed optimizer in the world so if you need conversion optimization, you may want to visit devknob online at devknob.com
Presentation from June 2013, Surrey, BC, Drupal Group meetup.
- Some tips how to improve Drupal 7 performance.
- Get Drupal 7 working faster
- Optimize code in order to get proper responses
- Use cache (memcache, APC cache, entity cache, varnish)
- Scale Drupal horizontally in order to balance load
Metrics, Metrics Everywhere (but where the heck do you start?)SOASTA
Not surprisingly, there’s no one-size-fits-all performance metric (though life would be simpler if there were). Different metrics will give you different critical insights into whether or not your pages are delivering the results you want — both from your end user’s perspective and ultimately from your organization’s perspective. Join Tammy Everts, and walk through various metrics that answer performance questions from multiple perspectives. You’ll walk away with a better understanding of your options, as well as a clear understanding of how to choose the right metric for the right audience.
This document provides tips and best practices for optimizing Magento performance. It discusses the importance of caching, both full page caching and object caching using Redis or Memcache. It also recommends using a CDN, PHP accelerators like OpCache, and monitoring tools like New Relic and Google Analytics to analyze site performance. The key sections discuss optimizing categories, product pages, and checkout through extensive caching and techniques like image optimization.
The document discusses strategies for improving front-end performance, especially for users on slow connections or mobile devices. It recommends dynamically adjusting content like images, scripts, and ads based on connection speed. Both client-side techniques using JavaScript and service workers as well as server-side methods like analyzing request headers and response times can help optimize the experience. Browsers are also intervening more aggressively to prioritize resources and content loading. The goal is to make websites faster and more usable for all users regardless of their network conditions.
Magento performance & optimisation best practicesPhilippe Humeau
This slide deck covers some of our Magento performances and optimisation best practices as we know them. We (NBS System) host 1800+ Magento shops since 2008, we hope this will help a lot of you to get good performances and enhance your conversion rate. It's not 100% complete coverage since it was a slide deck made for a 1H conference, but if you need more insights, contact us. Happy e-Commerce everyone!
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.
Building faster websites: web performance with WordPressJohannes Siipola
Nobody likes a slow website. Faster sites lead to happier users, and happier users lead to more conversions and revenue. That’s why you should take performance into account in your WordPress project. Learn what practical techniques and WordPress plugins to use in order to optimize your site for speed.
Walmart proves the obvious, devknob wonders why people don't understand why page speed matters. This has been true and known to be true since the beginning of the internet. Do you think people won't get distracted easily and bounce when they're surfing on 2g, 3g and even 4g connections? Page speed matters, devknob is probably the best page speed optimizer in the world so if you need conversion optimization, you may want to visit devknob online at devknob.com
Presentation from June 2013, Surrey, BC, Drupal Group meetup.
- Some tips how to improve Drupal 7 performance.
- Get Drupal 7 working faster
- Optimize code in order to get proper responses
- Use cache (memcache, APC cache, entity cache, varnish)
- Scale Drupal horizontally in order to balance load
Metrics, Metrics Everywhere (but where the heck do you start?)SOASTA
Not surprisingly, there’s no one-size-fits-all performance metric (though life would be simpler if there were). Different metrics will give you different critical insights into whether or not your pages are delivering the results you want — both from your end user’s perspective and ultimately from your organization’s perspective. Join Tammy Everts, and walk through various metrics that answer performance questions from multiple perspectives. You’ll walk away with a better understanding of your options, as well as a clear understanding of how to choose the right metric for the right audience.
This document provides tips and best practices for optimizing Magento performance. It discusses the importance of caching, both full page caching and object caching using Redis or Memcache. It also recommends using a CDN, PHP accelerators like OpCache, and monitoring tools like New Relic and Google Analytics to analyze site performance. The key sections discuss optimizing categories, product pages, and checkout through extensive caching and techniques like image optimization.
The document discusses strategies for improving front-end performance, especially for users on slow connections or mobile devices. It recommends dynamically adjusting content like images, scripts, and ads based on connection speed. Both client-side techniques using JavaScript and service workers as well as server-side methods like analyzing request headers and response times can help optimize the experience. Browsers are also intervening more aggressively to prioritize resources and content loading. The goal is to make websites faster and more usable for all users regardless of their network conditions.
Magento performance & optimisation best practicesPhilippe Humeau
This slide deck covers some of our Magento performances and optimisation best practices as we know them. We (NBS System) host 1800+ Magento shops since 2008, we hope this will help a lot of you to get good performances and enhance your conversion rate. It's not 100% complete coverage since it was a slide deck made for a 1H conference, but if you need more insights, contact us. Happy e-Commerce everyone!
Why your slow loading website is costing you sales and how to fix itRobert Flournoy
Learn: Why your website MUST be fast to be competitive, how a page is loaded by the browser, how to measure page speed and 5 simple ways to speed up YOUR website
.
Why your slow loading website is costing you sales and how to fix itstrommen
This document discusses how slow loading websites can negatively impact business by reducing conversions and increasing abandonment. It covers:
1. Research showing websites that load faster increase donations, click-through rates, and conversions while decreasing abandonment.
2. How browsers load pages over TCP and HTTP, including how objects like JavaScript, CSS, images are retrieved.
3. Methods for measuring page speed like load time, start render time, and speed index.
4. Techniques for speeding up websites like GZip compression, caching, optimizing images, bundling resources, and minimizing web fonts.
Selecting and deploying automated optimization solutionsPatrick Meenan
This document discusses various methods for automating front-end optimization. It describes how HTML rewriting solutions can optimize HTML through proxies or in-app plugins. It also discusses when certain optimizations are best done by machines versus humans. The document outlines different architectures for front-end optimization solutions, including cloud-based and on-premises options, and considers when each is most appropriate. It emphasizes the importance of testing solutions before deploying and of monitoring performance after deployment.
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.
Studies have identified speed as the single most critical factor for e-commerce conversion. There are lots of changes you could make to your website, but none of them are as risk-free as increasing speed. Some people like yellow, some like blue, but nobody likes slow. This talk will explain how to measure speed, and how to make your site much faster with minimal effort.
Navigating SAP’s Integration Options (Mastering SAP Technologies 2013)Sascha Wenninger
Provides an overview of popular integration approaches, maps them to SAP's integration tools and concludes with some lessons learnt in their application.
AJAX allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes, allowing parts of a page to change without reloading the entire page. Tuenti uses AJAX extensively to update parts of their single-page application, caching content on both client and server sides for scalability. They route requests to different server farms based on client location and cache content to improve performance. Tuenti serves billions of images per day using multiple CDNs and pre-fetches content to minimize load times.
20130714 php matsuri - highly available phpGraham Weldon
Graham Weldon discusses building highly available and scalable PHP systems. He outlines different system architectures from simple single server setups to load balanced solutions with failover. Key aspects in scaling PHP applications include using Nginx as a web server, PHP-FPM for processing, a clustered database, and caching with Varnish. Session handling requires a common storage like Redis. Weldon also promotes Rakuten's hiring needs for engineers interested in scalable architecture and DevOps.
Building a DevOps pipeline for Serverless by using Mocha, GitHub and TravisExove
Node.js Café 7.12.2016 presentation by James & Sami / MaaS Global
Life on the bleeding edge is not always easy. In building the Whim service with Serverless, we ended up building a DevOps pipeline, too. Here we’ll show how it works.
Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site Delivery
The document discusses how CBC/Radio-Canada optimized caching and reduced origin infrastructure using Akamai site delivery. Some of the key strategies used were setting default blanket caching rules, heavy leveraging of conditional GET requests, categorizing content into different TTL buckets, and enabling last mile acceleration. These techniques helped reduce origin costs and footprint while still maintaining a high level of content freshness and performance.
Facebook uses a combination of PHP, MySQL, and Memcache (LAMP stack) for their web and application tier. They have also developed various services and tools like Thrift, Scribe, and ODS to handle tasks like logging, monitoring, and communication between systems. Their architecture is designed for scale using principles like simplicity, optimizing for performance, and distributing load. Key components include caching data in Memcache, distributing MySQL databases, and developing services in higher performing languages when needed beyond the capabilities of PHP.
Magento Optimization – Challenges and Solutions
• Major challenges for optimization of Magento in detail
• Best possible solutions to overcome the major
challenges
• Complete process understanding with help of work flow for Magento optimization
• Roles and benefits of Cloud Server for Magento optimization through our own experience (Amazon Cloud Server)
The document discusses how HHVM (HipHop Virtual Machine), a just-in-time compiler created by Facebook, can improve the performance of PHP-based websites like WordPress by compiling PHP to bytecode faster than traditional PHP processing. It provides benchmarks showing HHVM's performance advantages over PHP-FPM and describes tools like XHProf that can help optimize WordPress sites to take advantage of HHVM's capabilities. While HHVM has risks with poorly coded themes/plugins, its performance gains make it worth considering as an alternative PHP processor.
This document discusses optimizing WordPress performance. It recommends minimizing frontend assets like CSS and images, using caching plugins to improve load times, optimizing themes and plugins, and choosing a fast web server like Nginx. Real-world tests show Nginx outperforming Apache. Specific tips include simplifying themes, deleting unused plugins, moving scripts to the bottom, and using a CDN with caching plugins to serve static assets quickly. The document emphasizes improving perceived performance through responsiveness, feedback and progressive loading.
Gowebbaby is a global web design company that has designed over 500 custom WordPress websites and 1000 blogs. There are several major issues that can cause a WordPress website to run slowly, including unwanted plugins, lack of caching, poor hosting, database optimization issues, and using an outdated version of WordPress. The document provides tips in each area to improve website speed, such as disabling unused plugins, installing a caching plugin, choosing a fast hosting provider, optimizing the database, and upgrading to the latest version.
CDNs improve content delivery over the internet by replicating popular content on servers located close to users. This allows users to retrieve content from nearby CDN nodes rather than distant origin servers, reducing latency. CDNs select the optimal server using policies like geographic proximity, load balancing, and performance monitoring. They redirect clients to CDN nodes using techniques like DNS responses and HTTP redirection. This improves the end user experience through faster delivery, lowers network congestion, and increases the scalability and fault tolerance of popular websites.
The document discusses strategies for optimizing WordPress performance and scalability as website traffic grows. It recommends optimizing the WordPress configuration, disabling heavy or unnecessary plugins, enabling caching plugins like WP Super Cache, and using a content delivery network to offload assets. As traffic increases, the document suggests moving from shared hosting to virtual private servers or dedicated servers to allow configuration changes. It advises a scale-out approach adding more web servers behind a load balancer and scaling databases for redundancy as needed. The key is optimizing WordPress for performance early and scaling infrastructure ahead of traffic growth.
SharePoint Performance - Best Practices from the Field Jason Himmelstein
Want to avoid the performance mistakes before you make them? This in-depth session we will discuss how to properly position your SharePoint farm for success beginning with "hardware" and ending with troubleshooting methodologies to maximize performance. Find the pitfalls before you hit them from someone who has climbed out of the deep dark holes in the wild. Best Practices from the Field combines recommendations from Microsoft with the experience of trial & error.
Este documento describe diferentes tipos de conglomerantes utilizados en la construcción. Define conglomerantes como materiales que unen fragmentos de otras sustancias dándoles cohesión. Explica que los más comunes son el yeso, la cal y el cemento, y los clasifica en primarios, secundarios y materiales bituminosos. Resume las propiedades y usos del yeso, cemento, mortero, hormigón, betún y asfalto.
The document discusses how to generate more sales through an integrated ecommerce email marketing setup. It recommends four techniques: 1) personalizing content to drive sales, 2) using vouchers for customer retention, 3) activating abandoned shopping carts to improve sales, and 4) retaining customers through a loyalty program. Implementing these techniques through an integrated platform can increase revenue by more than 20% by enabling personalized, automated experiences across channels.
Why your slow loading website is costing you sales and how to fix itRobert Flournoy
Learn: Why your website MUST be fast to be competitive, how a page is loaded by the browser, how to measure page speed and 5 simple ways to speed up YOUR website
.
Why your slow loading website is costing you sales and how to fix itstrommen
This document discusses how slow loading websites can negatively impact business by reducing conversions and increasing abandonment. It covers:
1. Research showing websites that load faster increase donations, click-through rates, and conversions while decreasing abandonment.
2. How browsers load pages over TCP and HTTP, including how objects like JavaScript, CSS, images are retrieved.
3. Methods for measuring page speed like load time, start render time, and speed index.
4. Techniques for speeding up websites like GZip compression, caching, optimizing images, bundling resources, and minimizing web fonts.
Selecting and deploying automated optimization solutionsPatrick Meenan
This document discusses various methods for automating front-end optimization. It describes how HTML rewriting solutions can optimize HTML through proxies or in-app plugins. It also discusses when certain optimizations are best done by machines versus humans. The document outlines different architectures for front-end optimization solutions, including cloud-based and on-premises options, and considers when each is most appropriate. It emphasizes the importance of testing solutions before deploying and of monitoring performance after deployment.
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.
Studies have identified speed as the single most critical factor for e-commerce conversion. There are lots of changes you could make to your website, but none of them are as risk-free as increasing speed. Some people like yellow, some like blue, but nobody likes slow. This talk will explain how to measure speed, and how to make your site much faster with minimal effort.
Navigating SAP’s Integration Options (Mastering SAP Technologies 2013)Sascha Wenninger
Provides an overview of popular integration approaches, maps them to SAP's integration tools and concludes with some lessons learnt in their application.
AJAX allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes, allowing parts of a page to change without reloading the entire page. Tuenti uses AJAX extensively to update parts of their single-page application, caching content on both client and server sides for scalability. They route requests to different server farms based on client location and cache content to improve performance. Tuenti serves billions of images per day using multiple CDNs and pre-fetches content to minimize load times.
20130714 php matsuri - highly available phpGraham Weldon
Graham Weldon discusses building highly available and scalable PHP systems. He outlines different system architectures from simple single server setups to load balanced solutions with failover. Key aspects in scaling PHP applications include using Nginx as a web server, PHP-FPM for processing, a clustered database, and caching with Varnish. Session handling requires a common storage like Redis. Weldon also promotes Rakuten's hiring needs for engineers interested in scalable architecture and DevOps.
Building a DevOps pipeline for Serverless by using Mocha, GitHub and TravisExove
Node.js Café 7.12.2016 presentation by James & Sami / MaaS Global
Life on the bleeding edge is not always easy. In building the Whim service with Serverless, we ended up building a DevOps pipeline, too. Here we’ll show how it works.
Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site Delivery
The document discusses how CBC/Radio-Canada optimized caching and reduced origin infrastructure using Akamai site delivery. Some of the key strategies used were setting default blanket caching rules, heavy leveraging of conditional GET requests, categorizing content into different TTL buckets, and enabling last mile acceleration. These techniques helped reduce origin costs and footprint while still maintaining a high level of content freshness and performance.
Facebook uses a combination of PHP, MySQL, and Memcache (LAMP stack) for their web and application tier. They have also developed various services and tools like Thrift, Scribe, and ODS to handle tasks like logging, monitoring, and communication between systems. Their architecture is designed for scale using principles like simplicity, optimizing for performance, and distributing load. Key components include caching data in Memcache, distributing MySQL databases, and developing services in higher performing languages when needed beyond the capabilities of PHP.
Magento Optimization – Challenges and Solutions
• Major challenges for optimization of Magento in detail
• Best possible solutions to overcome the major
challenges
• Complete process understanding with help of work flow for Magento optimization
• Roles and benefits of Cloud Server for Magento optimization through our own experience (Amazon Cloud Server)
The document discusses how HHVM (HipHop Virtual Machine), a just-in-time compiler created by Facebook, can improve the performance of PHP-based websites like WordPress by compiling PHP to bytecode faster than traditional PHP processing. It provides benchmarks showing HHVM's performance advantages over PHP-FPM and describes tools like XHProf that can help optimize WordPress sites to take advantage of HHVM's capabilities. While HHVM has risks with poorly coded themes/plugins, its performance gains make it worth considering as an alternative PHP processor.
This document discusses optimizing WordPress performance. It recommends minimizing frontend assets like CSS and images, using caching plugins to improve load times, optimizing themes and plugins, and choosing a fast web server like Nginx. Real-world tests show Nginx outperforming Apache. Specific tips include simplifying themes, deleting unused plugins, moving scripts to the bottom, and using a CDN with caching plugins to serve static assets quickly. The document emphasizes improving perceived performance through responsiveness, feedback and progressive loading.
Gowebbaby is a global web design company that has designed over 500 custom WordPress websites and 1000 blogs. There are several major issues that can cause a WordPress website to run slowly, including unwanted plugins, lack of caching, poor hosting, database optimization issues, and using an outdated version of WordPress. The document provides tips in each area to improve website speed, such as disabling unused plugins, installing a caching plugin, choosing a fast hosting provider, optimizing the database, and upgrading to the latest version.
CDNs improve content delivery over the internet by replicating popular content on servers located close to users. This allows users to retrieve content from nearby CDN nodes rather than distant origin servers, reducing latency. CDNs select the optimal server using policies like geographic proximity, load balancing, and performance monitoring. They redirect clients to CDN nodes using techniques like DNS responses and HTTP redirection. This improves the end user experience through faster delivery, lowers network congestion, and increases the scalability and fault tolerance of popular websites.
The document discusses strategies for optimizing WordPress performance and scalability as website traffic grows. It recommends optimizing the WordPress configuration, disabling heavy or unnecessary plugins, enabling caching plugins like WP Super Cache, and using a content delivery network to offload assets. As traffic increases, the document suggests moving from shared hosting to virtual private servers or dedicated servers to allow configuration changes. It advises a scale-out approach adding more web servers behind a load balancer and scaling databases for redundancy as needed. The key is optimizing WordPress for performance early and scaling infrastructure ahead of traffic growth.
SharePoint Performance - Best Practices from the Field Jason Himmelstein
Want to avoid the performance mistakes before you make them? This in-depth session we will discuss how to properly position your SharePoint farm for success beginning with "hardware" and ending with troubleshooting methodologies to maximize performance. Find the pitfalls before you hit them from someone who has climbed out of the deep dark holes in the wild. Best Practices from the Field combines recommendations from Microsoft with the experience of trial & error.
Este documento describe diferentes tipos de conglomerantes utilizados en la construcción. Define conglomerantes como materiales que unen fragmentos de otras sustancias dándoles cohesión. Explica que los más comunes son el yeso, la cal y el cemento, y los clasifica en primarios, secundarios y materiales bituminosos. Resume las propiedades y usos del yeso, cemento, mortero, hormigón, betún y asfalto.
The document discusses how to generate more sales through an integrated ecommerce email marketing setup. It recommends four techniques: 1) personalizing content to drive sales, 2) using vouchers for customer retention, 3) activating abandoned shopping carts to improve sales, and 4) retaining customers through a loyalty program. Implementing these techniques through an integrated platform can increase revenue by more than 20% by enabling personalized, automated experiences across channels.
Costas Tjiapouras has over 20 years of experience in IT management, project management, and network administration. He has worked for various companies in Cyprus, including Cybarco Ltd, Lanitis Group of Companies, and IBM. He currently serves as IT Manager for Cybarco Ltd and Cybarco Development Ltd, and is the President of the PMI Cyprus Chapter. He has a Master's degree in Electrical Engineering and an MBA, and holds several professional certifications including PMP, MCSE, and CCNA.
The document discusses how teachers can use podcasts in education. It defines podcasts as digital audio files that are compatible with Windows and Apple devices and do not require an iPod. It then outlines the basic steps to create a podcast which include recording audio using Audacity or GarageBand, sharing the recording to iTunes to create an MP3 file, tagging the MP3 with relevant information, and uploading the file to a podcast hosting service. The document encourages teachers to reflect on creative ways to integrate podcasts into their classrooms.
This document provides 10 examples of informal fallacies with brief descriptions of each. Students are instructed to work with a partner to identify the fallacy in each example and provide a 1-2 sentence explanation of it. They are to submit their answers on a half sheet of paper. The examples cover common fallacies such as appeal to authority, hasty generalization, red herring, slippery slope, and straw man.
Optimizing magento e commerce sites for increased sales and customer satisfac...George White
http://www.zerolag.com
An e-commerce web site’s performance, measured technically, financially, and by customer satisfaction, is based on its ability to merchandise products effectively, present information quickly, transact orders efficiently, and provide an enjoyable user experience. Magento has the potential to fulfill all of these requirements.
http://www.zerolag.com/magento-hosting | ZeroLag’s hosting services for Magento Enterprise Edition (EE) and Community Edition (CE) provide the highest levels of performance, reliability and security.
E-commerce involves the buying and selling of goods and services over electronic systems like the internet. There are several business-to-business models, including B2B where businesses purchase from other businesses, and business-to-consumer models where companies sell directly to individual consumers. E-commerce provides benefits like lower costs, 24/7 access, and a larger customer reach, but also disadvantages like an inability to physically examine products and reliance on internet connectivity.
This document discusses challenges in B2B e-commerce and strategies to address them. It highlights three main challenges that companies face: 1) optimizing distribution channels in the changing landscape, 2) reducing costs through empowering customers with self-service online, and 3) improving sales of complex products. The document then elaborates on each challenge and provides examples of companies that have successfully addressed them, such as how Dermalogica established cooperation across its distribution channels and empowered customers with an online store.
Las políticas de ciencia y tecnología han tenido un impacto limitado en Colombia. Durante los gobiernos de 1995-2001 y 2010-2014, hubo altibajos en la inversión, aunque aumentó algo durante el gobierno de Uribe. A pesar del aumento en la inversión reciente, todavía es poca en comparación con otros países. Las políticas propuestas han tenido poco efecto real en mejorar la educación y llevar la tecnología a zonas rurales. Se necesitan mayores esfuerzos del gobierno y la sociedad para al
Este documento presenta las promociones de julio de 2014 de Grupo Estratec, incluyendo descuentos en equipos nuevos y usados, así como cartuchos compatibles. La empresa ofrece equipos de impresión, copiado, escaneo y trituración a bajo costo, con servicio técnico, para ayudar a las empresas a mejorar su productividad.
This document discusses absolute advantage and comparative advantage as they relate to international trade. Absolute advantage refers to when one country can produce goods more cheaply than another. Comparative advantage refers to a country specializing in producing goods where its opportunity costs are lowest. The key points are: (1) comparative advantage means that even if one country is less efficient, there are still gains from trade if opportunity costs differ; (2) countries should export goods where their comparative advantage is greatest and import goods where it is least; (3) factors like resource availability and combinations impact comparative advantage.
Este documento compara las principales pruebas nacionales e internacionales de evaluación educativa. Describe las características, ventajas y desventajas de pruebas como el ICFES, las Pruebas Saber, ECAES, PISA, SERCE, TIMSS, PIRLS e ICSS, que evalúan diferentes áreas académicas y grados en Colombia y a nivel internacional. El objetivo es analizar cómo estas pruebas miden la calidad educativa y proveen información para mejorar los sistemas educativos.
From Zero to Performance Hero in Minutes - Agile Testing Days 2014 PotsdamAndreas Grabner
As a Tester you need to level up. You can do more than functional verification or reporting Response Time
In my Performance Clinic Workshops I show you real life exampls on why Applications fail and what you can do to find these problems when you are testing these applications.
I am using Free Tools for all of these excercises - especially Dynatrace which gives full End-to-End Visibility (Browser to Database). You can test and download Dynatrace for Free @ http://bit.ly/atd2014challenge
This document discusses web performance optimization and provides tips to improve performance. It emphasizes that performance is important for user experience, search engine optimization, conversion rates, and costs. It outlines common causes of performance issues like round-trip times, payload sizes, browser rendering delays, and inefficient JavaScript. Specific recommendations are given to optimize images, stylesheets, scripts, and browser rendering through techniques like compression, caching, deferred loading, and efficient coding practices. A variety of tools for measuring and improving performance are also listed.
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
Make Drupal Run Fast - increase page load speedAndy Kucharski
What does it mean when someone says “My Site is slow now”? What is page speed? How do you measure it? How can you make it faster? We’ll try to answer these questions, provide you with a set of tools to use and explain how this relates to your server load.
We will cover:
- What is page load speed? – Tools used to measure performance of your pages and site – Six Key Improvements to make Drupal “run fast”
++ Performance Module settings and how they work
++ Caching – biggest gainer and how to implement Boost
++ Other quick hits: off loading search, tweaking settings & why running crons is important
++ Ask your host about APC and how to make sure its set up correctly
++ Dare we look at the database? Easy changes that will help a lot!
- Monitoring Best practices – what to set up to make sure you know what is going on with your server – What if you get slashdoted? Recommendation on how to quickly take cover from a rhino.
What is Nginx and Why You Should to Use it with Wordpress HostingWPSFO Meetup Group
Floyd Smith and the team from NGINX presented at the Wordpress San Francisco MeetUp group in June 2016. In this presentation, he illustrated how NGINX can vastly improve your Wordpress hosting performance.
DrupalCamp LA 2014 - A Perfect Launch, Every TimeSuzanne Aldrich
Launches are tough on a new developer. Everyone remembers the lump in their throats around launch time; the rush to finish content, make final theme tweaks, adjust for sudden browser weirdness. As momentum picks up, the odd change request always appears, databases are slingshot hither and yon, while everyone scrambles to resolve merge conflicts like a Tokyo train at rush hour.
We emerge scarred but smarter, intent on making the next launch less painful. But with different teams launching different sites, it can be hard to establish an iterative process. Especially as new work accumulates in the backlog, we reap what we sow in technical debt from rushed launches, quick & dirty choices made under the gun, and unimplemented ideas from retrospectives.
Pantheon, however, has the same Customer Success team launching several enterprise sites per week, while assisting hundreds of self serve customers when they need a hand. Because we need to work effectively, we have developed the tools and process to ensure:
* Great Site Performance - On Day One
* Less problems over the long run
* Clear Expectations from Informed Stakeholders
The session will cover other key areas:
* Preparing For Launch for the PM, Stakeholder, Developer & Sys Admin
* Auditing the Site for landmines, carnivorous acid pool islands, and deadweight
* Load Testing to obliterate surprises with actionable results
This session is Platform Agnostic; whether you use PAAS, shared hosting, or wield your own hardware, PMs, developers, and clients will leave with new tools in their belt to launch with less agita. We will share some of our challenges and how we overcame them, and hopefully hear from you about how you overcame yours!
This is episode 4 of the building the perfect PHP app for the enterprise webinar series. Nothing is faster than a frustrated user clicking away from your site or abandoning your service. Avoid attrition by learning how to tune your applications towards lightning-fast page loads and response times. Learn: the basic principles behind enterprise PHP performance management; How to optimize workloads through background jobs and caching; How to measure performance and make data-driven decisions.
Make Drupal Run Fast - increase page load speedPromet Source
What does it mean when someone says “My Site is slow now”? What is page speed? How do you measure it? How can you make it faster? We’ll try to answer these questions, provide you with a set of tools to use and explain how this relates to your server load.
We will cover:
- What is page load speed? – Tools used to measure performance of your pages and site – Six Key Improvements to make Drupal “run fast”
++ Performance Module settings and how they work
++ Caching – biggest gainer and how to implement Boost
++ Other quick hits: off loading search, tweaking settings & why running crons is important
++ Ask your host about APC and how to make sure its set up correctly
++ Dare we look at the database? Easy changes that will help a lot!
- Monitoring Best practices – what to set up to make sure you know what is going on with your server – What if you get slashdoted? Recommendation on how to quickly take cover from a rhino.
Basics of Web App Systems Architecture
General Web Software Optimization Strategies
Defining a Goal for Performance
Performance Metrics, tools
Performance Debugging Techniques
What Can You Control?
What Is Caching?
Drupal Performance modules
Optimizing Drupal
Custom Coded Projects - When picking up a project you have many choices to make. Do you go for a premium theme and already builded plugins or will you write parts yourself. I will discuss what impacts custom building a project can have. I will focus on time, cost and speed to help you out with your decision making with future projects.
Web performance optimization - MercadoLibrePablo Moretti
The document provides techniques and tools for improving web performance. It discusses how reducing response times can directly impact revenues and user experience. It then covers various ways to optimize the frontend, including reducing time to first byte through DNS optimization and caching, using content delivery networks, HTTP compression, keeping connections alive, parallel downloads, and prefetching. It also discusses optimizing images, JavaScript loading, and introducing new formats like WebP. The overall document aims to educate on measuring and enhancing web performance.
The document is a presentation on high performance PHP. It discusses profiling PHP applications to identify bottlenecks, code-level optimizations that can provide gains, and big wins like upgrading PHP versions and using APC correctly. It also covers load testing tools like JMeter and key takeaways like focusing on big wins and caching.
10 Things You Can Do to Speed Up Your Web App TodayChris Love
Web Performance is a serious issues these days. 80% of web performance issues are in the client. Many developers either do not realize what they are leaving on the table and how that affects the success of their application. These are 10 things any web developer can do in about 30-60 minutes to drastically increase page load times and thus increase the application's profitability.
An introduction to the context of performance optimization for web applications. Touches upon the idea of performance for web applications, tools for monitoring and techniques for optimizing performance.
Single Page Applications: Your Browser is the OS!Jeremy Likness
Single Page Applications have gained tremendous popularity over the past few years and have prompted the creation of several frameworks to support their development. Unlike traditional web applications, most of the heavy lifting for SPA happens on the client side in your web browser. These applications rely on hundreds of lines of JavaScript coupled with asynchronous web service calls to provide a desktop-like experience that is accessible from virtually any device.
Join Principal Architect, Jeremy Likness, to learn more about SPA, including how to determine when you should choose this approach, how SPA compares and contrasts with traditional server-based approaches including ASP.NET WebForms and MVC, and what frameworks and tools (such as jQuery, AngularJS, and Aurelia) make building SPA easier. Discover how single page applications powered by HTML5 and JavaScript transform your browser into a web-based operating system.
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?
DrupalSouth 2015 - Performance: Not an AfterthoughtNick Santamaria
Nick Santamaria's performance and scalability presentation from DrupalSouth 2015.
https://melbourne2015.drupal.org.au/session/performance-not-afterthought
Jerry Lewis, VP of an IBM practice, discusses website performance and scalability for eCommerce. He shares horror stories of performance issues causing major revenue losses and customer complaints. Website performance is important because slow sites hurt sales and customer experience. Common causes of bad performance include inefficient code, database issues, and third party integration problems. To achieve good performance, websites must be designed with performance in mind from the start, with strategies like caching, efficient database usage, and infrastructure tuning.
The document discusses scaling a web application called Wanelo that is built on PostgreSQL. It describes 12 steps for incrementally scaling the application as traffic increases. The first steps involve adding more caching, optimizing SQL queries, and upgrading hardware. Further steps include replicating reads to additional PostgreSQL servers, using alternative data stores like Redis where appropriate, moving write-heavy tables out of PostgreSQL, and tuning PostgreSQL and the underlying filesystem. The goal is to scale the application while maintaining PostgreSQL as the primary database.
Similar to Imagine 2014: The Devil is in the Details How to Optimize Magento Hosting to Increase Online Sales (20)
1. Elemental Economics - Introduction to mining.pdfNeal Brewster
After this first you should: Understand the nature of mining; have an awareness of the industry’s boundaries, corporate structure and size; appreciation the complex motivations and objectives of the industries’ various participants; know how mineral reserves are defined and estimated, and how they evolve over time.
Lecture slide titled Fraud Risk Mitigation, Webinar Lecture Delivered at the Society for West African Internal Audit Practitioners (SWAIAP) on Wednesday, November 8, 2023.
[4:55 p.m.] Bryan Oates
OJPs are becoming a critical resource for policy-makers and researchers who study the labour market. LMIC continues to work with Vicinity Jobs’ data on OJPs, which can be explored in our Canadian Job Trends Dashboard. Valuable insights have been gained through our analysis of OJP data, including LMIC research lead
Suzanne Spiteri’s recent report on improving the quality and accessibility of job postings to reduce employment barriers for neurodivergent people.
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Independent Study - College of Wooster Research (2023-2024) FDI, Culture, Glo...AntoniaOwensDetwiler
"Does Foreign Direct Investment Negatively Affect Preservation of Culture in the Global South? Case Studies in Thailand and Cambodia."
Do elements of globalization, such as Foreign Direct Investment (FDI), negatively affect the ability of countries in the Global South to preserve their culture? This research aims to answer this question by employing a cross-sectional comparative case study analysis utilizing methods of difference. Thailand and Cambodia are compared as they are in the same region and have a similar culture. The metric of difference between Thailand and Cambodia is their ability to preserve their culture. This ability is operationalized by their respective attitudes towards FDI; Thailand imposes stringent regulations and limitations on FDI while Cambodia does not hesitate to accept most FDI and imposes fewer limitations. The evidence from this study suggests that FDI from globally influential countries with high gross domestic products (GDPs) (e.g. China, U.S.) challenges the ability of countries with lower GDPs (e.g. Cambodia) to protect their culture. Furthermore, the ability, or lack thereof, of the receiving countries to protect their culture is amplified by the existence and implementation of restrictive FDI policies imposed by their governments.
My study abroad in Bali, Indonesia, inspired this research topic as I noticed how globalization is changing the culture of its people. I learned their language and way of life which helped me understand the beauty and importance of cultural preservation. I believe we could all benefit from learning new perspectives as they could help us ideate solutions to contemporary issues and empathize with others.
OJP data from firms like Vicinity Jobs have emerged as a complement to traditional sources of labour demand data, such as the Job Vacancy and Wages Survey (JVWS). Ibrahim Abuallail, PhD Candidate, University of Ottawa, presented research relating to bias in OJPs and a proposed approach to effectively adjust OJP data to complement existing official data (such as from the JVWS) and improve the measurement of labour demand.
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Vicinity Jobs’ data includes more than three million 2023 OJPs and thousands of skills. Most skills appear in less than 0.02% of job postings, so most postings rely on a small subset of commonly used terms, like teamwork.
Laura Adkins-Hackett, Economist, LMIC, and Sukriti Trehan, Data Scientist, LMIC, presented their research exploring trends in the skills listed in OJPs to develop a deeper understanding of in-demand skills. This research project uses pointwise mutual information and other methods to extract more information about common skills from the relationships between skills, occupations and regions.
4. Outline
1. Case study: Zarpo.com solution engineering
2. Load testing results: lab vs. real-world testing
3. Best practices for Magento-optimized development
4. The link between performance and conversion
5. Case Study: Mystery of the Locked DB
• Zarpo.com is the first and largest flash sale travel
website in Latin America
• Based in
o Paulo Brazil
• Zarpo’s objective is to provide the best online user
experience to demanding Latin American travelers
• Running a highly customized deployment of Magento
Enterprise Edition
6. Case Study: Mystery of the Locked DB
Monday, January 13, 2014 – Catastrophic Event
• 12:37 PM: Critical ticket opened with ZeroLag Support –
“Zarpo is badly down”
• 12:48 PM: Initial trouble analysis complete – MySQL crash
– Extremely high volume of queries locked up the DB
• 1:04 PM: ZeroLag engineer kills queries and restarts SQL –
site back online
• 1:22 PM: Queries continue to pound SQL for reasons
unknown. ZeroLag staff keeps SQL online
7. Case Study: Mystery of the Locked DB
Monday, January 13, 2014
• 4:27 PM: Root cause deep dive begins
– Team is assembled: DBA and senior Magento / Linux engineers
8. Case Study: Mystery of the Locked DB
Monday, January 13, 2014
• 5:00 PM: DB diagnostics and configuration analysis begins
• 6:18 PM: Test environment is set up to focus on DB cache
under load
9. Case Study: Mystery of the Locked DB
Tuesday, January 14, 2014
• 8:15 AM: Root cause identified
– An AJAX call checks a custom cache
– When a travel deal gets sold or updated the cache is cleared
and the next AJAX call kicks off a recache
– If a cache has not been built by the time next AJAX call
happens, another cache rebuild gets launched
– Zarpo had recently released its mobile application and usage
increased 800% causing a massive log jam of cache rebuilds
10. Case Study: Mystery of the Locked DB
Tuesday, January 14, 2014
• 9:18 AM: Solution engineering begins
11. Case Study: Mystery of the Locked DB
Tuesday, January 14, 2014
• Developer briefing: ZeroLag recommends solution
– Add Ajax code that blocks all rebuilds if a rebuild is already in progress
• The Ajax call puts up a “loading new deals” clock for users during cache rebuilds
• As an added benefit, the clock contributes to the user experience by helping build
customer anticipation for deals, consistent with the flash sale business model
12. Case Study: Mystery of the Locked DB
Tuesday, January 14, 2014
Zarpo names the successful solution “The McManus Magic Shield”
13. Case Study: Mystery of the Locked DB
Skype Room Chat Report from Zarpo
[1/24/14, 9:41:45 AM] Alexis Manach: excellent
news
[1/24/14, 9:41:56 AM] Alexis Manach: the
McManus magic shield is on..
[1/24/14, 9:42:09 AM] Alexis Manach: and
working beautifully..
[1/24/14, 9:42:43 AM] Alexis Manach: this
morning i triggered this big event recache with
over 550 concurrent users online and site did
not even move a little bit.
14. About ZeroLag
Get the power of 1:1
• Magento Platinum Hosting Partner
• Founded April 1999
• Founder, CEO Greg Strelzoff
• 80 Employees
• We never throw developers
under the bus!
16. Purpose
• To observe Magento performance under varying store
sizes, cache configurations, and traffic levels
– Directly relates to questions we get asked on a weekly basis
during the pre-sale process
17. Lab and store test setup
• Environment: single load test server
– Tool: Gatling
– Method: Blind test (unbiased)
– Tiers: Single web & DB, Dual web & DB
– Code: stock Magento EE 1.13, no plugins
• Test grid:
– Cache: Memcached, Redis
– Store sizes: 1K, 100K, 500K products
– Traffic: 100, 200, 300, 400, 500 concurrent browsers
• Success rate: 99% to consider valid test
19. Environment Response Time vs. Traffic
At 100 concurrent browsers, the “smaller” environment
performed best…
It depends on where the bottlenecks are!
• At low levels, CPU is not strained
• No benefit of extra CPU power from
two web servers
• 50ms overhead due to shared PHP
sessions (Memcached) and file
system (NFS)
21. Lab Load Test Recap
• Environment sizing is important to performance
• Stock Magento is fast and scalable when deployed with
best practices
• Memcached and Redis have similar performance
profiles when under load
• This establishes a baseline on which we can compare
some real-world sites
22. Real-World Testing
• Selected 5 representative Magento sites
• Tested during off-peak hours
• Abort testing at >1% failure rate
• Generate Gatling install script for each site
• Same testing procedure as Lab tests
24. Client Response Time vs. Traffic
• Performs worse than the baseline
• Enabled Enterprise Edition Full Page
Cache, but not fully utilized
• Replaced stock Magento frontend with
Expression Engine
www www
db
25. Client Response Time vs. Traffic
• Performs better than the baseline
• Enabled a number of custom plugins
• Using Varnish and third-party plugin
www
26. Client Response Time vs. Traffic
• Performs better than the baseline
• Front-end designed for Magento
• Using Enterprise Edition FPC
• Using local HTTP Accelerator
www www
www
db
27. Client Response Time vs. Traffic
• Best scalability of all tested sites
• Most consistent performance
• Front-end designed for Magento
• Using Enterprise Edition FPC
• Using cloud-based HTTP accelerator
www www
db
29. Client Response Time vs. Traffic
www
db
• Great single-user experience
• Very poor scalability
• A large number of complex plugins
• Significant development issues
• Multiple developers working on the site
• File-based Magento fast cache
• DB-based PHP sessions
• FPC incompatible with plugins/code
• CPU intensive site
30. Real-World Load Test Recap
• Code quality is the single greatest factor in determining
performance of a Magento site
– Frontend
– Plugins
– Custom Code
• FPC, HTTP accelerators, clustering, and in-memory
fast cache are excellent ways to improve scalability
31. Best Practices in
Magento Development
03
Doug Goldberg
Vice President,
Magento Solutions
32. Common Bottlenecks
Poorly Optimized Frontend
– Making performance-impacting changes
– Very large images
– Hundreds of very small images
– Uncombined JavaScript/CSS
– JavaScript/CSS out of order
– No browser caching
– Performance-intensive uncached page elements
33. Best Practices
• Reduce the number of HTTP requests, limit external requests
– Base install of Magento has < 40 calls
– Most Magento sites I have seen: 100+ calls
• Compress files
– JavaScript, images, HTML, CSS, etc.
– Images should not be over 50KB
• Minify JS
– Removes unnecessary spaces, tabs, and other
selected characters
– Reduces overall size of the file
• Combine or merge JS and CSS
34. Best Practices, cont.
• Load CSS first, JavaScript last
– Page appears to be loaded on the user’s machine while JavaScript is catching
up and loading in the background
• Add expiration headers for static graphic files (Browser cache)
– 80% of page load time is downloading scripts, images, and CSS, which
normally don’t change very often
• Use CSS sprites
– Can cut page load time by reducing the amount of HTTP requests your page
makes to the server, through the consolidation of your CSS background
images
35. Best Practices, cont.
• Avoid redirects
– Site loads a header with a blank page, then loads
new page
– Increases the time it takes to get the user to the
page they actually want
• Use cache very aggressively
– Including Magento FPC if on Enterprise Edition
• Use CDN
– And even multiple zones for parallel downloads
37. HipHop Virtual Machine
• HipHop for PHP: a series of execution engines
and improvements created by Facebook
– Original motivation: save server resources
given large PHP codebase of facebook.com
– As development progressed: realization that
HipHop could substantially increase the speed
of PHP applications in general
• Current version open-sourced in late 2011
– Known as HHVM (HipHop Virtual Machine)
38. Case Study – Magento and HHVM
• Car Part Kings
• Wanted to run HHVM and fpm on the
same production site to compare
performance
• How do you do that?
– Query parameter strings (?h=1)
39. What does that look like?
• fpm
– carpartkings.com/mann-cabin-air-filter-cu-2949-2.html
• HHVM
– carpartkings.com/mann-cabin-air-filter-cu-2949-2.html?h=1
40. How did it perform?
• fpm page load time = 2.16 seconds
• HHVM page load time = 1.14 seconds
• On the first day, conversion increased by
500% over the similar fpm pages
• Facebook has seen increases in web
page generation throughput by factors of
up to 6x vs. Zend PHP
41. Is HHVM ready for primetime?
• Not quite yet
– Car Part Kings, ZeroLag and the HHVM consultant got it working
– But it needed to be restarted 4 to 5 times a day
• Currently deactivated
– HHVM consultant working on a solution to eliminate crashes
42. The Link Between
Performance and Conversion
05
Aaron Koch
Vice President,
Direct Sales
43. How performance impacts your business
Why is performance critical?
Studies show users are more likely to convert on a faster site
− Slow sites subconsciously erode user confidence
− User Experience is everything and there are two components:
• Visible user experience - look and feel of the site along with
information architecture
• Invisible user experience - the passage of time itself
• Front-end innovation combined with back-end performance
optimization delivers the best User Experience possible
46. How performance impacts your business
• Consciously or not, visitors expect pages to load in two
seconds or less
• A one-second delay reduces conversions by 7%*
• Even seemingly tolerable delays can add up to substantial
lost revenue
– For example, a site which sells $100,000 per day can lose as much as
$2.5 million annually for every extra second of page load delay*
• Small changes in site speed can have a huge impact on
e-commerce sales
*According to research conducted by Akamai and Gomez Advisors (now Compuware)
48. Evaluating your site
Use free tools to analyze your Magento sites
• Knowing is half the battle
WebPagetest (webpagetest.org)
• TTFB, image compression,
caching, CDN
• Compare web sites’ page load
times
49. Evaluating your site
Use free tools to analyze your Magento sites
• Knowing is half the battle
Gtmetrix (gtmetrix.com)
• Breakdown 25+ page speed
components
• Provides performance
improvement recommendations
• Also, Magento-specific
recommendations
50. Evaluating your site
Use free tools to analyze your Magento sites
• Knowing is half the battle
YSlow (yslow.org)
• Waterfall chart shows each call
to build the page, with
associated load time
• Open Source; also available as
browser plugin for Chrome,
Firefox, more
51. Leave this room with a plan
• Choose a hosting company that you think will best
support your business
• Implement a multi-layered strategy for
optimization and caching
• Communicate with your hosting company
and your solution partner; work together
to improve performance
• Remember that your website is a tool, not a canvas