Presentation by @aaronpeters at Dutch Web Performance Meetup on August 22 2012.
The presentation covers new stuff in WPT UI, the WPT API, scripting and hidden gems. Awesome tool, but also room for improvement.
Presentation from Velocity NYC 2014 on setting up private WebPagetest instances
Video: https://www.youtube.com/playlist?list=PLWa0Ky8nXQTaFXpT_YNvLElTEpHUyaZi4
Slides for my tutorial from Velocity 2014 on some of the more advanced features in WebPagetest.
Video is available on Youtube:
Part 1: http://youtu.be/6UeRMMI_IzI
Part 2: http://youtu.be/euVYHee1f1M
Presentation from Velocity NYC 2014 on setting up private WebPagetest instances
Video: https://www.youtube.com/playlist?list=PLWa0Ky8nXQTaFXpT_YNvLElTEpHUyaZi4
Slides for my tutorial from Velocity 2014 on some of the more advanced features in WebPagetest.
Video is available on Youtube:
Part 1: http://youtu.be/6UeRMMI_IzI
Part 2: http://youtu.be/euVYHee1f1M
Google's Go is a relatively new systems programming language that has recently gained a lot of traction with developers. It brings together the ease and efficiency of development in modern interpreted languages like Python, Perl, and Ruby with the efficiency and safety of a statically typed, compiled language like C/C++ and Java.
On top of that, Go is a language built for modern hardware and problems. With built-in support for concurrency, programmers can easily build software to scale up to today's many-core beasts. Programming in Go is really nice, and in this tutorial, you will learn why.
We will cover an introduction to the Go programming language, and together we will build a multi-user network service demonstrating all of the major principles of programming in Go.
Make It Fast - Using Modern Browser Performance APIs to Monitor and Improve t...Nicholas Jansma
Make It Fast
Using Modern Browser Performance APIs to Monitor and Improve the Performance of your Web Apps.
Presented at CodeMash 2015.
Performance matters. How fast your site loads — not just on your development machine, but from your actual customers, across the globe — has a direct impact on your visitors’ happiness and conversion rate. Today’s browsers provide several new cutting-edge performance APIs that can give you Real User Metrics (RUM) of your live site’s performance. Whether you run a small blog or a top-1K site, monitoring and understanding your performance is the key to giving your visitors a better experience. We will be discussing the NavigationTiming, ResourceTiming and UserTiming performance APIs, which are available in the majority of modern browsers. You’ll walk away with a better understanding of what problem these APIs solve and how to start using them today. We’ll also go through both D.I.Y. and commercial options that utilize these APIs to help you better monitor and improve the performance of your websites.
Asynchronous Web Programming with HTML5 WebSockets and JavaJames Falkner
(Talk originally given @ KCDC - http://kcdc.info ).
Over the last decade, advances in web computing have removed many of the barriers to entry for developers. New languages, frameworks, and development methodologies have kickstarted new ideas and new ways to develop web applications to make modern life easier and more efficient. WebSockets (introduced as part of HTML5) is one such technology that enables a new class of scalable, super-responsive, collaborative, and real-time web applications with a wide range of uses.
In this talk, we will first cover the basics of asynchronous web programming using WebSockets, including predecessors such as polling and long-polling, applications of WebSockets, its limitations and potential bottlenecks, and potential future improvements.
Next, we will demo and dissect a real-world use case for realtime social data analytics, using the Apache Tomcat implementation of WebSockets and the Java-based Liferay Portal Server. This will include a discussion about development of WebSocket endpoints, its lifecycle within the application container and browser, debugging WebSockets, and scalability topics.
Presentation from webinar held on August 19th, 2020, with Xdebug developer Derick Rethans and Seravo CEO Otto Kekäläinen.
This presentation shows you how to use Xdebug (which is very easy with the Seravo WordPress development environment!) to make a record of what the WordPress PHP code does during a website page load, and how to use that information to optimize the performance of your WordPress site.
For a video recording and Dericks presentation see https://seravo.com/blog/webinar-xdebug-profile-php/
Find Site Performance from the server to WordPress. A look at how some good performance gains can be made in tuning MySQL and APC and getting the most of out W3 Total Cache.
Metrics, metrics everywhere (but where the heck do you start?)Tammy Everts
There’s no one-size-fits-all approach to metrics. In this session, Cliff Crocker and I walk through various metrics that answer performance questions from multiple perspectives — from designer and DevOps to CRO and CEO. 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.
WebPageTest is a great tool for testing and analysing how quickly web pages load.
Many people just use it as a simple testing tool, but it has advanced scripting capabilities for multi-page testing, completing forms etc.
It also has an API so performance testing can be integrated into Continuous Integration processes, used for monitoring and analysing how the web is built.
These slides explore some of these capabilities in more detail.
There are bonus slides after the "Thank You" slide
Week 5 Whats The Big Idea - Emma DicksUCT Upstarts
This workshop will take you through identifying a real human need, brainstorming techniques and idea generation methods, and finally evaluating the crazy, brilliant ideas you come up with.
Google's Go is a relatively new systems programming language that has recently gained a lot of traction with developers. It brings together the ease and efficiency of development in modern interpreted languages like Python, Perl, and Ruby with the efficiency and safety of a statically typed, compiled language like C/C++ and Java.
On top of that, Go is a language built for modern hardware and problems. With built-in support for concurrency, programmers can easily build software to scale up to today's many-core beasts. Programming in Go is really nice, and in this tutorial, you will learn why.
We will cover an introduction to the Go programming language, and together we will build a multi-user network service demonstrating all of the major principles of programming in Go.
Make It Fast - Using Modern Browser Performance APIs to Monitor and Improve t...Nicholas Jansma
Make It Fast
Using Modern Browser Performance APIs to Monitor and Improve the Performance of your Web Apps.
Presented at CodeMash 2015.
Performance matters. How fast your site loads — not just on your development machine, but from your actual customers, across the globe — has a direct impact on your visitors’ happiness and conversion rate. Today’s browsers provide several new cutting-edge performance APIs that can give you Real User Metrics (RUM) of your live site’s performance. Whether you run a small blog or a top-1K site, monitoring and understanding your performance is the key to giving your visitors a better experience. We will be discussing the NavigationTiming, ResourceTiming and UserTiming performance APIs, which are available in the majority of modern browsers. You’ll walk away with a better understanding of what problem these APIs solve and how to start using them today. We’ll also go through both D.I.Y. and commercial options that utilize these APIs to help you better monitor and improve the performance of your websites.
Asynchronous Web Programming with HTML5 WebSockets and JavaJames Falkner
(Talk originally given @ KCDC - http://kcdc.info ).
Over the last decade, advances in web computing have removed many of the barriers to entry for developers. New languages, frameworks, and development methodologies have kickstarted new ideas and new ways to develop web applications to make modern life easier and more efficient. WebSockets (introduced as part of HTML5) is one such technology that enables a new class of scalable, super-responsive, collaborative, and real-time web applications with a wide range of uses.
In this talk, we will first cover the basics of asynchronous web programming using WebSockets, including predecessors such as polling and long-polling, applications of WebSockets, its limitations and potential bottlenecks, and potential future improvements.
Next, we will demo and dissect a real-world use case for realtime social data analytics, using the Apache Tomcat implementation of WebSockets and the Java-based Liferay Portal Server. This will include a discussion about development of WebSocket endpoints, its lifecycle within the application container and browser, debugging WebSockets, and scalability topics.
Presentation from webinar held on August 19th, 2020, with Xdebug developer Derick Rethans and Seravo CEO Otto Kekäläinen.
This presentation shows you how to use Xdebug (which is very easy with the Seravo WordPress development environment!) to make a record of what the WordPress PHP code does during a website page load, and how to use that information to optimize the performance of your WordPress site.
For a video recording and Dericks presentation see https://seravo.com/blog/webinar-xdebug-profile-php/
Find Site Performance from the server to WordPress. A look at how some good performance gains can be made in tuning MySQL and APC and getting the most of out W3 Total Cache.
Metrics, metrics everywhere (but where the heck do you start?)Tammy Everts
There’s no one-size-fits-all approach to metrics. In this session, Cliff Crocker and I walk through various metrics that answer performance questions from multiple perspectives — from designer and DevOps to CRO and CEO. 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.
WebPageTest is a great tool for testing and analysing how quickly web pages load.
Many people just use it as a simple testing tool, but it has advanced scripting capabilities for multi-page testing, completing forms etc.
It also has an API so performance testing can be integrated into Continuous Integration processes, used for monitoring and analysing how the web is built.
These slides explore some of these capabilities in more detail.
There are bonus slides after the "Thank You" slide
Week 5 Whats The Big Idea - Emma DicksUCT Upstarts
This workshop will take you through identifying a real human need, brainstorming techniques and idea generation methods, and finally evaluating the crazy, brilliant ideas you come up with.
User Experience Mentoring (Ideabox Indonesia)Dian Soraya
The objective of the talk is to show the teams the proper methodologies in user research. The ultimate aim is to help the teams in building good UX for their apps, because good UX design only comes from good user research.
The School of Chemical Sciences, Dublin City University, is one of Ireland's most progressive and highest achieving Schools with outstanding facilities, housed within a modern and dynamic city campus.
Our goal is to help our students to develop the ability to critically evaluate, and then to solve, chemical and pharmaceutical problems, preparing students for the challenges of the modern industrial or research laboratory.
The School is also one of the most successful Chemistry Schools in Ireland for attracting large scale research funding, with our researchers having significant roles within nationally significant university/industry collaborative initiatives.
Try to imagine the amount of time and effort it would take you to write a bug-free script or application that will accept a URL, port scan it, and for each HTTP service that it finds, it will create a new thread and perform a black box penetration testing while impersonating a Blackberry 9900 smartphone. While you’re thinking, Here’s how you would have done it in Hackersh:
“http://localhost” \
-> url \
-> nmap \
-> browse(ua=”Mozilla/5.0 (BlackBerry; U; BlackBerry 9900; en) AppleWebKit/534.11+ (KHTML, like Gecko) Version/7.1.0.346 Mobile Safari/534.11+”) \
-> w3af
Meet Hackersh (“Hacker Shell”) – A new, free and open source cross-platform shell (command interpreter) with built-in security commands and Pythonect-like syntax.
Aside from being interactive, Hackersh is also scriptable with Pythonect. Pythonect is a new, free, and open source general-purpose dataflow programming language based on Python, written in Python. Hackersh is inspired by Unix pipeline, but takes it a step forward by including built-in features like remote invocation and threads. This 120 minute lab session will introduce Hackersh, the automation gap it fills, and its features. Lots of demonstrations and scripts are included to showcase concepts and ideas.
One-Man Ops with Puppet & Friends.
If you're getting started in Amazon AWS here's 7 tools that will help you be successful, a few tips to make your life easier and some common pitfalls to avoid.
Customize and Secure the Runtime and Dependencies of Your Procedural Language...VMware Tanzu
Customize and Secure the Runtime and Dependencies of Your Procedural Languages Using PL/Container
Greenplum Summit at PostgresConf US 2018
Hubert Zhang and Jack Wu
Advanced Eclipse Workshop (held at IPC2010 -spring edition-)Bastian Feder
So wie sich PHP weiterentwickelt, so entwickelt sich auch die Art der Programmierung weiter. Die Zeiten sind vorbei, in denen PHP nur von Hobbyprogrammierern genutzt wurde. Doch mit dem Anspruch an die Projekte steigt auch der Anspruch bei der Entwicklung. Schnell wird hierbei auf eine leistungsstarke IDE wie Eclipse PDT, Zend Studio oder Netbeans zurückgegriffen. Doch wie sieht eine anspruchsvolle Entwicklung mit solch einer IDE aus? Dieser Workshop wird Ihnen am Beispiel von der IDE Eclipse PDT demonstrieren, wie solch eine Entwicklung aussehen kann. Im Detail wird Ihnen gezeigt, wie Sie mittels SVN und Subversive Ihren Code mit mehreren Leuten gemeinsam pflegen und entwickeln und wie Sie die Entwicklungsumgebung Ihren Bedürfnissen anpassen, um z.B. mittels phing eigene Build-Prozesse anstoßen zu können. Damit Sie direkt eigene Erfahrungen sammeln können, würden wir Ihnen herzlich anraten, Ihren Laptop mitzubringen. Um zeitraubenden Installationen vorzubeugen, wird Ihnen ein Ubuntu in Form einer Live-CD bereitgestellt. Teilnehmer mit bestehender Linux-Installation und entsprechenden Rechten können ihr System während des Workshops direkt für den täglichen Gebrauch einrichten.
Nagios Conference 2012 - Dan Wittenberg - Case Study: Scaling Nagios Core at ...Nagios
Dan Wittenberg's presentation on using Nagios at a Fortune 50 Company
The presentation was given during the Nagios World Conference North America held Sept 25-28th, 2012 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/nwcna
(phpconftw2012) PHP as a Middleware in Embedded Systemssosorry
It is used by sosorry at PHPConf Taiwan 2012. In this presentation, we will see that why we need a middleware in embedded systems, and how PHP can play this role. Besides, some tasks about architecture design, porting libraries, development & debug, and performance tunning would be included.
A talk about methods and tools to automate deployment of Plone sites. With a few steps an environment is prepared for a new Plone site on a test, staging or production layer. These steps take a couple of minutes, doing this manually took around one hour.
We use Puppet to prepare our hosts/clusters to get an environment to deploy to. Fabric is used to deploy Plone on this environment and to extend the webserver configuration under the hood. These complementary techniques provide a complete solution to get a working Plone site, including rollbacks.
Presentation by: Pawel Lewicki and Kim Chee Leong
Embedded Recipes 2019 - Testing firmware the devops wayAnne Nicolas
ITRenew is selling recertified OCP servers under the Sesame brand, those servers come either with their original UEFI BIOS or with LinuxBoot. The LinuxBoot project is pushing the Linux kernel inside bios flash and using userland programs as bootloader.
To achieve quality on our software stack, as any project, we need to test it. Traditional BIOS are tested by hand, this is 2019 we need to do it automatically! We already presented the hardware setup behind the LinuxBoot CI, this talk will focus on the software.
We use u-root for our userland bootloader; this software is written in Go so we naturally choose to use Go for our testing too. We will present how we are using and extending the Go native test framework `go test` for testing embedded systems (serial console) and improving the report format for integration to a CI.
Julien Viard de Galbert
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
10. Capture Network Log (Chrome)
Returns big TXT file with JSON … then what?
Pat: “You probably don't want to use the
network log - it was added for the Chrome
team themselves to debug the browser :-)”
13. Getting started
Get an API key from Pat (required)
Know your requests will have low prio /getLocations.php
Basic process:
1. Submit request via POST or GET
2. Poll for the test status (or use pingback)
3. Fetch test results
4. Fetch objects (charts, screen shots, ...)
14. Submitting requests
Send a POST or GET to
http://www.webpagetest.org/runtest.php
url is only required parameter
Defaults: Dulles DSL, 1 run, first & repeat
view, public, no video
Overview of parameters
15. Results
Example XML
It has it all, incl.
1. PageSpeed version & results
2. Page <title>
3. Links to pages/files for everything in UI
4. Video frame URLs & Speed Index score !
20. Commands you'll likely use
Command Description
navigate Navigate to next page, wait for it to complete
logData Set to 0 to not record anything; 1 = record!
setValue Sets the value attribute of the given DOM element to the
provided value.
submitForm Triggers a submit event for the identified form.
setDOMElement Sets the attribute of a DOM element that is required for
the next event to complete successfully.
block Blocks individual requests from loading
combineSteps Causes multiple script steps to be combined into a single
"step" in the results
setViewportSize Changes size of visible browser window
firefoxPref Allows you to specify arbitrary preferences that will be
configured before launching the browser. Eg.
firefoxPref network.http.pipelining false
setDNS Allows for overriding the IP address for a host name.
21. Why did the test fail?
Can be very hard to troubleshoot, esp. on
large scripts
24. &iq=90
Specify a jpeg compression level (30-10095)
for the screen shots and video capture
iq=default
iq=90
Video!
25. &pngss=1
Set to 1 to save a full-resolution version of
the fully loaded screen shot as a png
Normal JPG
Big PNG24
26. &f=json
Format. Set to "xml" to request an XML
response instead of a redirect ("json" is also
provisionally supported)
27. &plr=50
Packet loss rate - percent of packets to drop
(used when specifying a custom connectivity
profile)
plr=0
plr=50
No diff !
Location
specific
issue?