Go debugging and troubleshooting tips - from real life lessons at SignalFxSignalFx
Exploring tips and advice on writing production Go systems that are easy to debug and troubleshoot. Jack Lindamood from SignalFx presents patterns that facilitate this process.
Jack addresses tools built into Go you can take advantage of, build process techniques they've learned over time, and open source tools and libraries you can use that help troubleshoot your production code when things go wrong.
Read more here: http://blog.signalfx.com/a-pattern-for-optimizing-go
Go debugging and troubleshooting tips - from real life lessons at SignalFxSignalFx
Exploring tips and advice on writing production Go systems that are easy to debug and troubleshoot. Jack Lindamood from SignalFx presents patterns that facilitate this process.
Jack addresses tools built into Go you can take advantage of, build process techniques they've learned over time, and open source tools and libraries you can use that help troubleshoot your production code when things go wrong.
Read more here: http://blog.signalfx.com/a-pattern-for-optimizing-go
Playing With Fire - An Introduction to Node.jsMike Hagedorn
node.js is an evented server-side Javascript framework powered by the Google V8 Javascript engine. It is a platform ideal for creating highly scalable web applications. It has the same simplicity of frameworks such as Sinatra, but is designed to be more peformant from the ground up. This performance is achieved by making all network I/O non blocking and all file I/O asynchronous. We will go over how that impacts the development experience, and walk through a simple web application. Javascript is foundational to this type of I/O because it is already evented by design. We will also take a brief look a similar evented frameworks such as ruby`s EventMachine.
RUM isn’t just for page level metrics anymore. Thanks to modern browser updates and new techniques we can collect real user data at the object level, finding slow page components and keeping third parties honest.
In this talk we will show you how to use Resource Timing, User Timing, and other browser tricks to time the most important components in your page. We’ll also share recipes for several of the web’s most popular third parties. This will give you a head start on measuring object level performance on your own site.
Presentation to the MIT IAP HTML5 Game Development Class on Debugging and Optimizing Javascript, Local storage, Offline Storage and Server side Javascript with Node.js
All you need to know about the JavaScript event loopSaša Tatar
Learn the difference between JavaScript Engine, JavaScript Runtime, what is JavaScript event loop and why we should care.
At the end the presentation goes through a couple of examples and implementations of throttle and debounce utility functions.
Droidcon Berlin 2021 - With coroutines being the de facto way of exposing async work and streams of changes for Kotlin on Android, developers are obviously attempting to use the same approaches when moving their code to Multiplatform.
But due to the way the memory model differs between JVM and Kotlin Native, it can be a painful experience.
In this talk, we will take a deep dive into the Coroutine API for Kotlin Multiplatform. You will learn how to expose your API with Coroutines while working with the Kotlin Native memory model instead of against it, and avoid the dragons along the way.
Pushing symfony events in real time to your clients
This talk, held at the symfony live Paris unconference, gives an overview about how events thrown in symfony can be dispatched in real time to web clients. It describes the architecture of the solution and provides examples using the open source comet server APE
연구자 및 교육자를 위한 계산 및 분석 플랫폼 설계 - PyCon KR 2015Jeongkyu Shin
현대 과학 연구에는 컴퓨터를 이용한 계산 및 분석 작업이 필수적입니다. 그러나 거대 스케일의 계산 및 분석 작업을 수행할 경우 컴퓨팅 리소스의 적절한 관리 및 확장 용이성을 확보하는 것은 많은 리소스를 필요로 합니다. 우리는 컴퓨터 계산 작업 및 분석 작업을 표준화하고 클라우드에서 처리하는 파이썬3 기반의 오픈소스 플랫폼을 설계 및 개발하고 있습니다. 또한 이 플랫폼 위에서 돌아가는 교육 / 연구 플랫폼을 함께 설계하고 있습니다.
새로운 서비스를 변화하는 환경에 맞추어 개발하는 일은 즐거운 경험인 동시에, "무엇을" "어떻게" "왜" 로 이어지는 지뢰밭을 거니는 일이기도 합니다. "무엇을" 만들지 고민하고 토론하며 결정하고, 설계하고, 토론하고, 목표가 바뀌는 과정이 일어납니다. "어떻게" 만드느냐의 지뢰들로는 python 2에서 python 3 로의 전환, 웹 프레임웍인 Django와 프론트엔드 프레임웍들과의 충돌, 아마존 elastic computing cloud와 docker를 사용한 디플로이 시나리오 등 삽질 중에 발생하는 일들이 있습니다. "왜"에 대한 질문들은 무겁지만 피해갈 수 없습니다. "왜 하필 파이썬인가?" "왜 하필 그런 서비스를 만드려 하는가" 등의 질문은, 무엇인가를 만들기로 결심한 사람들에게 주어지는 가장 중요한 질문이자 보상이기도 합니다.
저희는 지난 2개월동안 이 과정을 통해 우리가 배운 것들을 공유하고자 합니다. 구체적으로는 개발 중인 플랫폼 구조, 설계 과정의 경험 및 python 3 기반의 플랫폼 개발시 주의할 점들에 대해 이야기하고, 그와 함께 지뢰밭을 걷게 만든 '원동력' 에 대해 함께 이야기할 수 있는 자리가 되었으면 합니다.
Domains were added to Node.js in 0.8, but their use and workings have been a relative mystery. In short, domains are a structured way of reacting to uncaught exceptions; for example, when creating an HTTP server, you can use domains to send 500 errors when exceptions occur instead of crashing your server. This talk will go over what domains are, how to use them, and some of the subtleties behind how they work.
(Presented at JSConf US 2013. Be sure to check out the speaker notes!)
Frustration, a rant, a test suite, a gist. Then, community awesomeness. Boom! Promises/A+ was born.
Promise are an old idea for abstracting asynchronous code, but have only recently made their way into JavaScript. We'll look at the power they provide via two striking examples that go beyond the usual "escape from callback hell" snippets. First we'll show how, with ES6 generators, they can act as shallow coroutines to give us back code just as simple as its synchronous counterpart. Then we'll look at how they can be used as proxies for remote objects, across <iframe>, worker, or web socket boundaries.
However, the most interesting aspect of Promises/A+ is not just the code it enables, but how we worked to create it. We didn't join a standards body, but instead formed a GitHub organization. We had no mailing list, only an issue tracker. We submitted pull requests, made revisions, debated versions tags, etc.—all in the open, on GitHub. And, we succeeded! Promises/A+ is widely used and implemented today, with its extensible core forming the starting point of any discussions about promises. Indeed, this community-produced open standard has recently been informing the incorporation of promises into ECMAScript and the DOM. I'd like to share the story of how this happened, the lessons we learned along the way, and speculate on the role such ad-hoc, community-driven, and completely open specifications have for the future of the web.
Presentation from Django User Group London, June 2017
How to run Django on AWS Lambda - with demo of getting a hello world deployed in less than 10 minutes
node.js and native code extensions by examplePhilipp Fehre
Over the last years node.js has evolved to be a great language to build web applications. The reason for this is not only that it is based on JavaScript which already is established around "the web" but also that it provides excellent facilities for extensions, not only via JavaScript but also integration of native C libraries. Couchbase makes a lot of use of this fact making the Couchbase node.js SDK (Couchnode) a wrapper around the C library providing a node.js like API, but leveraging the power of a native C library underneat. So how is this done? How does such a package look like? Let me show you how integration of C in node.js works and how to "read" a package like Couchnode.
Playing With Fire - An Introduction to Node.jsMike Hagedorn
node.js is an evented server-side Javascript framework powered by the Google V8 Javascript engine. It is a platform ideal for creating highly scalable web applications. It has the same simplicity of frameworks such as Sinatra, but is designed to be more peformant from the ground up. This performance is achieved by making all network I/O non blocking and all file I/O asynchronous. We will go over how that impacts the development experience, and walk through a simple web application. Javascript is foundational to this type of I/O because it is already evented by design. We will also take a brief look a similar evented frameworks such as ruby`s EventMachine.
RUM isn’t just for page level metrics anymore. Thanks to modern browser updates and new techniques we can collect real user data at the object level, finding slow page components and keeping third parties honest.
In this talk we will show you how to use Resource Timing, User Timing, and other browser tricks to time the most important components in your page. We’ll also share recipes for several of the web’s most popular third parties. This will give you a head start on measuring object level performance on your own site.
Presentation to the MIT IAP HTML5 Game Development Class on Debugging and Optimizing Javascript, Local storage, Offline Storage and Server side Javascript with Node.js
All you need to know about the JavaScript event loopSaša Tatar
Learn the difference between JavaScript Engine, JavaScript Runtime, what is JavaScript event loop and why we should care.
At the end the presentation goes through a couple of examples and implementations of throttle and debounce utility functions.
Droidcon Berlin 2021 - With coroutines being the de facto way of exposing async work and streams of changes for Kotlin on Android, developers are obviously attempting to use the same approaches when moving their code to Multiplatform.
But due to the way the memory model differs between JVM and Kotlin Native, it can be a painful experience.
In this talk, we will take a deep dive into the Coroutine API for Kotlin Multiplatform. You will learn how to expose your API with Coroutines while working with the Kotlin Native memory model instead of against it, and avoid the dragons along the way.
Pushing symfony events in real time to your clients
This talk, held at the symfony live Paris unconference, gives an overview about how events thrown in symfony can be dispatched in real time to web clients. It describes the architecture of the solution and provides examples using the open source comet server APE
연구자 및 교육자를 위한 계산 및 분석 플랫폼 설계 - PyCon KR 2015Jeongkyu Shin
현대 과학 연구에는 컴퓨터를 이용한 계산 및 분석 작업이 필수적입니다. 그러나 거대 스케일의 계산 및 분석 작업을 수행할 경우 컴퓨팅 리소스의 적절한 관리 및 확장 용이성을 확보하는 것은 많은 리소스를 필요로 합니다. 우리는 컴퓨터 계산 작업 및 분석 작업을 표준화하고 클라우드에서 처리하는 파이썬3 기반의 오픈소스 플랫폼을 설계 및 개발하고 있습니다. 또한 이 플랫폼 위에서 돌아가는 교육 / 연구 플랫폼을 함께 설계하고 있습니다.
새로운 서비스를 변화하는 환경에 맞추어 개발하는 일은 즐거운 경험인 동시에, "무엇을" "어떻게" "왜" 로 이어지는 지뢰밭을 거니는 일이기도 합니다. "무엇을" 만들지 고민하고 토론하며 결정하고, 설계하고, 토론하고, 목표가 바뀌는 과정이 일어납니다. "어떻게" 만드느냐의 지뢰들로는 python 2에서 python 3 로의 전환, 웹 프레임웍인 Django와 프론트엔드 프레임웍들과의 충돌, 아마존 elastic computing cloud와 docker를 사용한 디플로이 시나리오 등 삽질 중에 발생하는 일들이 있습니다. "왜"에 대한 질문들은 무겁지만 피해갈 수 없습니다. "왜 하필 파이썬인가?" "왜 하필 그런 서비스를 만드려 하는가" 등의 질문은, 무엇인가를 만들기로 결심한 사람들에게 주어지는 가장 중요한 질문이자 보상이기도 합니다.
저희는 지난 2개월동안 이 과정을 통해 우리가 배운 것들을 공유하고자 합니다. 구체적으로는 개발 중인 플랫폼 구조, 설계 과정의 경험 및 python 3 기반의 플랫폼 개발시 주의할 점들에 대해 이야기하고, 그와 함께 지뢰밭을 걷게 만든 '원동력' 에 대해 함께 이야기할 수 있는 자리가 되었으면 합니다.
Domains were added to Node.js in 0.8, but their use and workings have been a relative mystery. In short, domains are a structured way of reacting to uncaught exceptions; for example, when creating an HTTP server, you can use domains to send 500 errors when exceptions occur instead of crashing your server. This talk will go over what domains are, how to use them, and some of the subtleties behind how they work.
(Presented at JSConf US 2013. Be sure to check out the speaker notes!)
Frustration, a rant, a test suite, a gist. Then, community awesomeness. Boom! Promises/A+ was born.
Promise are an old idea for abstracting asynchronous code, but have only recently made their way into JavaScript. We'll look at the power they provide via two striking examples that go beyond the usual "escape from callback hell" snippets. First we'll show how, with ES6 generators, they can act as shallow coroutines to give us back code just as simple as its synchronous counterpart. Then we'll look at how they can be used as proxies for remote objects, across <iframe>, worker, or web socket boundaries.
However, the most interesting aspect of Promises/A+ is not just the code it enables, but how we worked to create it. We didn't join a standards body, but instead formed a GitHub organization. We had no mailing list, only an issue tracker. We submitted pull requests, made revisions, debated versions tags, etc.—all in the open, on GitHub. And, we succeeded! Promises/A+ is widely used and implemented today, with its extensible core forming the starting point of any discussions about promises. Indeed, this community-produced open standard has recently been informing the incorporation of promises into ECMAScript and the DOM. I'd like to share the story of how this happened, the lessons we learned along the way, and speculate on the role such ad-hoc, community-driven, and completely open specifications have for the future of the web.
Presentation from Django User Group London, June 2017
How to run Django on AWS Lambda - with demo of getting a hello world deployed in less than 10 minutes
node.js and native code extensions by examplePhilipp Fehre
Over the last years node.js has evolved to be a great language to build web applications. The reason for this is not only that it is based on JavaScript which already is established around "the web" but also that it provides excellent facilities for extensions, not only via JavaScript but also integration of native C libraries. Couchbase makes a lot of use of this fact making the Couchbase node.js SDK (Couchnode) a wrapper around the C library providing a node.js like API, but leveraging the power of a native C library underneat. So how is this done? How does such a package look like? Let me show you how integration of C in node.js works and how to "read" a package like Couchnode.
Helloo
General sense of my application I need money for :
intensive language course and plane ticket to Portugal
links:
Polish
http://www.stypendiumzwyboru.pl/fundacja/kandydaci-2011/0457-blondynka-w-portugalii
english
http://translate.google.ca/translate?hl=en&u=http://stypendiumzwyboru.pl/fundacja/kandydaci-2011/0457-blondynka-w-portugalii
Writing concurrent program is hard; maintaining concurrent program even is a nightmare. Actually, a pattern which helps us to write good concurrent code is available, that is, using “channels” to communicate.
This talk will share the channel concept with common libraries, like threading and multiprocessing, to make concurrent code elegant.
It's the talk at PyCon TW 2017 [1] and PyCon APAC/MY 2017 [2].
[1]: https://tw.pycon.org/2017
[2]: https://pycon.my/pycon-apac-2017-program-schedule/
Aplicações Assíncronas no Android com Coroutines e JetpackNelson Glauber Leal
Para usufruir dos múltiplos núcleos existentes nos processadores dos smartphones atuais, podemos realizar chamadas assíncronas de modo a paralelizar o fluxo de execução da aplicação. Normalmente isso é feito por meio de threads e callbacks que acabam por adicionar uma complexidade ao código que pode comprometer sua leitura e manutenção. Nessa apresentação, veremos como utilizar a API de Coroutines do Kotlin em conjunto com diversas bibliotecas do Jetpack do Android de modo a implementar programação assíncrona forma simples e eficiente.
Golang Performance : microbenchmarks, profilers, and a war storyAerospike
Slides for Brian Bulkowski's talk about Golang performance:
microbenchmarks, profilers, and a war story about optimizing the Aerospike Database Go client.
http://www.meetup.com/Go-lang-Developers-NYC/events/216650022/
1. what is the different unbuffered and buffered channel?
2. how to implement a job queue in golang?
3. how to stop the worker in a container?
4. Shutdown with Sigterm Handling
5. Canceling Workers without Context
6. Graceful shutdown with worker
7. How to auto-scaling build agent?
8. How to cancel the current Job?
NDC Sydney 2019 - Async Demystified -- Karel ZikmundKarel Zikmund
NDC Sydney 2019 conference in Sydney, AU - 2019/10/15
Talk: War stories from .NET team by Karel Zikmund
https://sessionize.com/s/karel-zikmund/async-demystified/24175
https://www.youtube.com/watch?v=TgUYcZV-foM
Page freeze, glitchy animation, and slow scrolling. They follow us everywhere, and we'd like them to stop. This talk will get to the bottom of these issues by delving into the Javascript engine and concepts like task, call-stack, and event-loops. I will also introduce several ways to tackle these problems and walk you through a demo to help you understand.
Go is a language developed by Google with multi-core in mind. Differ from other languages, concurrency is a first-class primitive in Go. This talk covers some useful patterns for dealing with concurrency.
A presentation for the Reactive Programming Enthusiasts Denver meet-up.
http://www.meetup.com/Reactive-Programming-Enthusiasts-Denver/
How Reactive Mongo helps utilize your hardware better and achieve a non-blocking application from the bottom up.
Getting property based testing to work after struggling for 3 yearsSaurabh Nanda
Slides for my talk at Functional Conf 2019 where I shared our journey of struggling with property based testing and finally getting **something** to work with the Hedgehog library.
Succeeding with Secure Access Service Edge (SASE)Cloudflare
With the emergence of the Secure Access Service Edge (SASE), network and security professionals are struggling to build a migration plan for this new platform that adapts to the distributed nature of users and data.
SASE promises to reduce complexity and cost, improve performance, increase accessibility and enhance security. The question is: How do you gain these benefits as you work towards implementing a SASE architecture? View to learn:
-Why SASE should be less complicated than many vendors are making it
-What to look for when evaluating a migration to a SASE platform
-A 3 month, 6 month, and 12 month roadmap for implementation
-How Cloudflare One, a purpose-built SASE platform, delivers on these promised benefits
Close your security gaps and get 100% of your traffic protected with CloudflareCloudflare
The Gaming & Gambling industry has been the target of increasingly sophisticated cyber attacks in recent years, ranging from automated bots carrying out credential stuffing and intellectual property scraping to Layer 3 DDoS attacks, which can result in reduced network speed and performance, and in some cases loss of business when such incidents occur.
View this presentation from Cloudflare security experts Stephane Nouvellon, Principal Solutions Engineer and Philip Björkman, Strategic Vertical Account Executive (EMEA Gaming & Gambling) to learn about:
-How you can protect your business and improve the performance and reliability of your infrastructure, globally
-Solutions to secure your organization's online traffic (all OSI layers) against bots and cyber attacks whilst improving the performance of your applications.
Why you should replace your d do s hardware applianceCloudflare
Watch this webinar to learn how to:
Protect and accelerate your networks
Reduce the total cost of ownership (TCO) in your data centers, and
Increase your operational agility with easy deployment and management of network services
Don't Let Bots Ruin Your Holiday Business - Snackable WebinarCloudflare
Bot attacks to look out for this holiday season including:
Account takeover/Credential stuffing, inventory hoarding, price scraping, fake account creation, credit card stuffing.
Why Zero Trust Architecture Will Become the New Normal in 2021Cloudflare
The COVID-19 pandemic brought changes no IT team was ready for: employees were sent home, customer interaction models changed, and cloud transformation efforts abruptly accelerated. Cloudflare recently commissioned Forrester Consulting to explore the impact of 2020 disruptions on security strategy and operations among companies of all sizes. To do so, they surveyed 317 global security decision makers from around the world.
Join our guest Forrester VP, Principal Analyst, Chase Cunningham, and Cloudflare Go-To-Market Leader, Brian Parks, for an in-depth discussion of the survey results, followed by practical guidance for next year’s planning.
HARTMANN and Cloudflare Learn how healthcare providers can build resilient in...Cloudflare
Join this webinar to learn how Paul Hartmann, a leading manufacturer of medical and healthcare products, leverages Cloudflare to strengthen its security posture and deliver a superior online experience to its customers
Zero trust for everybody: 3 ways to get there fastCloudflare
The COVID-19 pandemic has exposed the weaknesses of the traditional ‘castle-and-moat’ security model. Remote work has expanded attack surfaces infinitely outwards, and more than ever, organizations need to start from the assumption that their ‘castle’ is already compromised. Zero Trust has emerged as a compelling security framework to address the failures of existing perimeter-based security approaches. It’s aspirational, but not unachievable.
At Cloudflare, we’re making complicated security challenges easier to solve. Since 2018, Cloudflare Access has helped thousands of organizations big and small take their first steps toward Zero Trust.
In this presentation, Cloudflare will share their perspective on what the most successful organizations do first on their journey to Zero Trust.
We’ll cover:
-The Zero Trust framework, and our recommended ZT security model
-How 3 organizations of differing size and security maturity have implemented Zero Trust access
-Cloudflare’s Zero Trust implementation and lessons learned
LendingTree and Cloudflare: Ensuring zero trade-off between security and cust...Cloudflare
Maintaining the right balance between security and customer experience is always challenging for online businesses. This challenge becomes even more relevant during this crisis as businesses face unprecedented levels of traffic and attacks.
Tune in to learn how LendingTree leverages Cloudflare to strengthen their security posture while ensuring a superior online experience for their customers. Listen to security experts from LendingTree and Cloudflare as they discuss:
Emerging attack vectors and tactics impacting online platforms
Best practices for online businesses to overcome these threats
How LendingTree leverages Cloudflare to maintain the right balance between security and business objectives
Network Transformation: What it is, and how it’s helping companies stay secur...Cloudflare
Rahul Deshmukh, Product Marketing at Cloudflare, & Varun Mehta, Solutions Engineer at Cloudflare, discuss how several companies have approached network transformation to improve the security, performance, and reliability of their infrastructure
Scaling service provider business with DDoS-mitigation-as-a-serviceCloudflare
During the webinar, Vivek Ganti, Product Marketing Manager for Cloudflare, & Jim Hodges, Chief Analyst of Cloud and Security at Heavy Reading, discussed how service providers are regular targets of DDoS attacks, and how these attacks directly impact their uptime, availability, and revenue.
Application layer attack trends through the lens of Cloudflare dataCloudflare
The past few months have seen significant changes in how attackers target the application layer—through injection attacks, malicious bots, DDoS, API vulnerability exploits, and more. We can observe these changes by analyzing traffic from Cloudflare’s global network, which blocks an average of 45 billion threats per day for over 27 million Internet properties.
Watch this webinar to explore data on:
Which attack vectors have become more and less common
How those changes vary by region and industry
The business and societal trends behind these attacks
Strategies for addressing these latest attack tactics
Recent DDoS attack trends, and how you should respondCloudflare
The past few months have seen significant changes in global DDoS tactics. We can observe these changes in detail by analyzing traffic patterns from Cloudflare’s global network, which protects more than 27 million Internet properties and blocks 45 billion cyber threats every day. What approaches are DDoS attackers using right now, and what are forward-thinking organizations doing in response?
Cloudflare DDoS product experts Omer Yoachimik, and Vivek Ganti will explore new data on DDoS trends and discuss ways to counter these tactics.
Cybersecurity 2020 threat landscape and its implications (AMER)Cloudflare
Cybersecurity decisions have direct implications to individuals, enterprises and organizations but also have broader societal implications than ever before. In 2020 and beyond, technology promises to change our own experience and enhance our way of life, and those of our customers, significantly. This reliance and targeting have been magnified during COVID19, where the cybercriminals have sunk to new lows at the same time as that reliance on tech has increased.
This session will explore how these technologies are going to change the experiences of our lives for the better and for the worse. It will explore the most recent cybersecurity breaches, predict the key security issues for 2020 and discuss current security priorities.
Strengthening security posture for modern-age SaaS providersCloudflare
Businesses become more resilient in times of crises. This is especially true for SaaS businesses that are facing unprecedented challenges in this environment. While some are catering to a surge in traffic, others are figuring out innovative solutions to retain their customers. In addition, increasing malicious attacks are straining the resources of these SaaS businesses.
Now more than ever, it is important for SaaS providers to deliver an uninterrupted experience. One that is fast, secure, and reliable to their customers in a cost effective manner.
Join this webcast to learn more about how ActiveCampaign leverages Cloudflare to deliver meaningful services to their end users.
Kentik and Cloudflare Partner to Mitigate Advanced DDoS AttacksCloudflare
DDoS attacks are evolving. Detecting and mitigating attacks quickly and accurately is a key strategy to ensure business continuity.
Join this webinar to learn about:
- What is a DDoS attack and what it can cost you
- Global DDoS attack trends and what it means to you
- How Cloudflare Magic Transit and Kentik together monitor and mitigate DDoS attacks of all sizes and kinds
In this webinar, learn from Cloudflare’s DDoS Protection Product Manager, Omer Yoachimik, about the recent attacks (both large and small) and how Cloudflare is uniquely positioned to help protect Internet properties on its network from DDoS attacks and cyber threats.
In this webinar, you will learn:
- DDoS attack trends to watch out for in 2020
- How Cloudflare detects & mitigates DDoS attacks
- How can you protect your website and networks against DDoS attacks
It’s 9AM... Do you know what’s happening on your network?Cloudflare
If you manage a corporate network, you’re responsible for protecting users from risky and malicious content online. Doing that well requires insight into the requests on your network, and the power to block risky content before it impacts your users. Legacy solutions have addressed this challenge by forcing the Internet through hardware onsite.
Cloudflare has a better way. The all-new Cloudflare Gateway (part of the Cloudflare for Teams family), provides secure, intelligent DNS powered by the world’s fastest public DNS resolver. With Gateway, you can visualize your Internet traffic in one place. And with 100+ security and content filters at your fingertips, you can apply comprehensive Internet intelligence to protect global office networks in a matter of minutes.
Join Irtefa, Product Manager for Cloudflare Gateway and AJ Gerstenhaber, Go to Market for Cloudflare for Teams, to discover a new way to protect your offices and teams from malware - no legacy firewalls required.
Bring speed and security to the intranet with cloudflare for teamsCloudflare
Cloudflare was started to solve one half of every IT organization's challenge: how do you ensure the resources and infrastructure that you expose to the Internet are safe from attack, fast, and reliable? To deliver that, we built one of the world's largest networks. Today our network spans more than 200 cities worldwide and is within milliseconds of nearly everyone connected to the Intranet.
Cloudflare for Teams is a new platform designed to solve the other half of every IT organization's challenge: ensuring the people and teams within an organization can safely access the tools they need to do their job. Now you can extend Cloudflare’s speed, reliability and protection to everything your team does on the Intranet.
In this webinar, you’ll learn:
- Common challenges of scaling security for your growing business
- How to extend Zero Trust security principles to your internally managed applications
- How to make Intranet access faster and safer for your employees
In a highly competitive digital culture, businesses are intensifying their digital transformation efforts to expand their hybrid and multi-cloud cloud initiatives. As dependencies on legacy point solutions and architectures begin to diminish, developers are becoming increasingly influential in newly digitally transformed organizations.
The need for increased agility, and speed is paramount. While CDNs have been a key fixture for many enterprise businesses to remediate global network latencies, new challenges have arisen with these solutions that are inhibiting agile workstyles.
Join this webinar to learn the following:
- The foundations of improving web performance
- How the web performance market is evolving and the challenges faced by CDN providers
- How Cloudflare supports your digital transformation
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.
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.
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
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
2. Fundamentals
• goroutines
• Very lightweight processes
• All scheduling handled internally by the Go runtime
• Unless you are CPU bound you do not have to think about
scheduling
• Channel-based communication
• The right way for goroutines to talk to each other
• Synchronization Primitives
• For when a channel is too heavyweight
• Not covered in this talk
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3. goroutines
• “Lightweight”
• Starting 10,000 goroutines on my MacBook Pro took 22ms
• Allocated memory increased by 3,014,000 bytes (301 bytes per
goroutine)
• https://gist.github.com/jgrahamc/5253020
• Not unusual at CloudFlare to have a single Go program
running 10,000s of goroutines with 1,000,000s of
goroutines created during life program.
• So, go yourFunc() as much as you like.
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4. Channels
• Quick syntax review
c := make(chan bool)– Makes an unbuffered
channel of bools
c <- x – Sends a value on the channel
<- c – Waits to receive a value on the channel
x = <- c – Waits to receive a value and stores it in x
x, ok = <- c – Waits to receive a value; ok will be
false if channel is closed and empty.
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5. Unbuffered channels are best
• They provide both communication and synchronization
func from(connection chan int) {!
connection <- rand.Intn(100)!
}!
!
func to(connection chan int) {!
i := <- connection!
fmt.Printf("Someone sent me %dn", i)!
}!
!
func main() {!
cpus := runtime.NumCPU()!
runtime.GOMAXPROCS(cpus)!
!
connection := make(chan int)!
go from(connection)!
go to(connection)!
}!
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6. Using channels for signaling
(1)
• Sometimes just closing a channel is enough
c := make(chan bool)!
!
go func() {!
!// ... do some stuff!
!close(c)!
}()!
!
// ... do some other stuff!
<- c!
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7. Using channels for signaling (2)
• Close a channel to coordinate multiple goroutines
func worker(start chan bool) {!
<- start!
// ... do stuff!
}!
!
func main() {!
start := make(chan bool)!
!
for i := 0; i < 100; i++ {!
go worker(start)!
}!
!
close(start)!
!
// ... all workers running now!
}!
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8. Select
• Select statement enables sending/receiving on multiple
channels at once
select {!
case x := <- somechan:!
// ... do stuff with x!
!
case y, ok := <- someOtherchan:!
// ... do stuff with y!
// check ok to see if someOtherChan!
// is closed!
!
case outputChan <- z:!
// ... ok z was sent!
!
default:!
// ... no one wants to communicate!
}!
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9. Common idiom: for/select!
for {!
select {!
case x := <- somechan:!
// ... do stuff with x!
!
case y, ok := <- someOtherchan:!
// ... do stuff with y!
// check ok to see if someOtherChan!
// is closed!
!
case outputChan <- z:!
// ... ok z was sent!
!
default:!
// ... no one wants to communicate!
}!
}!
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10. Using channels for signaling (4)
• Close a channel to terminate multiple goroutines
func worker(die chan bool) {!
for {!
select {!
// ... do stuff cases!
case <- die: !
return!
}!
}!
}!
!
func main() {!
die := make(chan bool)!
for i := 0; i < 100; i++ {!
go worker(die)!
}!
close(die)!
}!
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11. Using channels for signaling (5)
• Terminate a goroutine and verify termination
func worker(die chan bool) {!
for {!
select {!
// ... do stuff cases!
case <- die:!
// ... do termination tasks !
die <- true!
return!
}!
}!
}!
func main() {!
die := make(chan bool)!
go worker(die)!
die <- true!
<- die!
}!
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12. Example: unique ID service
• Just receive from id to get a unique ID
• Safe to share id channel across routines
id := make(chan string)!
!
go func() {!
var counter int64 = 0!
for {!
id <- fmt.Sprintf("%x", counter)!
counter += 1!
}!
}()!
!
x := <- id // x will be 1!
x = <- id // x will be 2!
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13. Example: memory recycler
func recycler(give, get chan []byte) {!
q := new(list.List)!
!
for {!
if q.Len() == 0 {!
q.PushFront(make([]byte, 100))!
}!
!
e := q.Front()!
!
select {!
case s := <-give:!
q.PushFront(s[:0])!
!
case get <- e.Value.([]byte):!
q.Remove(e)!
}!
}!
}!
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14. Timeout
func worker(start chan bool) {!
for {!
!timeout := time.After(30 * time.Second)!
!select {!
// ... do some stuff!
!
case <- timeout:!
return!
}!
func worker(start chan bool) {!
}!
timeout := time.After(30 * time.Second)!
}!
for {!
!select {!
// ... do some stuff!
!
case <- timeout:!
return!
}!
}!
}!
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15. Heartbeat
func worker(start chan bool) {!
heartbeat := time.Tick(30 * time.Second)!
for {!
!select {!
// ... do some stuff!
!
case <- heartbeat:!
// ... do heartbeat stuff!
}!
}!
}!
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16. Example: network multiplexor
• Multiple goroutines can send on the same channel
func worker(messages chan string) {!
for {!
var msg string // ... generate a message!
messages <- msg!
}!
}!
func main() {!
messages := make(chan string)!
conn, _ := net.Dial("tcp", "example.com")!
!
for i := 0; i < 100; i++ {!
go worker(messages)!
}!
for {!
msg := <- messages!
conn.Write([]byte(msg))!
}!
}!
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17. Example: first of N
• Dispatch requests and get back the first one to complete
type response struct {!
resp *http.Response!
url string!
}!
!
func get(url string, r chan response ) {!
if resp, err := http.Get(url); err == nil {!
r <- response{resp, url}!
}!
}!
!
func main() {!
first := make(chan response)!
for _, url := range []string{"http://code.jquery.com/jquery-1.9.1.min.js",!
"http://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js",!
"http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js",!
"http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.9.1.min.js"} {!
go get(url, first)!
}!
!
r := <- first!
// ... do something!
}!
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18. range!
• Can be used to consume all values from a channel
func generator(strings chan string) {!
strings <- "Five hour's New York jet lag"!
strings <- "and Cayce Pollard wakes in Camden Town"!
strings <- "to the dire and ever-decreasing circles"!
strings <- "of disrupted circadian rhythm."!
close(strings)!
}!
!
func main() {!
strings := make(chan string)!
go generator(strings)!
!
for s := range strings {!
fmt.Printf("%s ", s)!
}!
fmt.Printf("n");!
}!
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19. Passing a ‘response’ channel
type work struct {!
url string!
resp chan *http.Response!
}!
!
func getter(w chan work) {!
for {!
do := <- w!
resp, _ := http.Get(do.url)!
do.resp <- resp!
}!
}!
!
func main() {!
w := make(chan work)!
!
go getter(w)!
!
resp := make(chan *http.Response)!
w <- work{"http://cdnjs.cloudflare.com/jquery/1.9.1/jquery.min.js",!
resp}!
!
r := <- resp!
}!
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20. Buffered channels
• Can be useful to create queues
• But make reasoning about concurrency more difficult
c := make(chan bool, 100) !
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21. Example: an HTTP load balancer
• Limited number of HTTP clients can make requests for
URLs
• Unlimited number of goroutines need to request URLs
and get responses
• Solution: an HTTP request load balancer
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22. A URL getter
type job struct {!
url string!
resp chan *http.Response!
}!
!
type worker struct {!
jobs chan *job!
count int!
}!
!
func (w *worker) getter(done chan *worker) {!
for {!
j := <- w.jobs!
resp, _ := http.Get(j.url)!
j.resp <- resp!
done <- w!
}!
}!
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23. A way to get URLs
func get(jobs chan *job, url string, answer chan string) {!
resp := make(chan *http.Response)!
jobs <- &job{url, resp}!
r := <- resp!
answer <- r.Request.URL.String()!
}!
!
func main() {!
jobs := balancer(10, 10)!
answer := make(chan string)!
for {!
var url string!
if _, err := fmt.Scanln(&url); err != nil {!
break!
}!
go get(jobs, url, answer)!
}!
for u := range answer {!
fmt.Printf("%sn", u)!
}!
}!
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24. A load balancer
func balancer(count int, depth int) chan *job {!
jobs := make(chan *job)!
done := make(chan *worker)!
workers := make([]*worker, count)!
!
for i := 0; i < count; i++ {!
workers[i] = &worker{make(chan *job,
depth), 0}!
go workers[i].getter(done)!
}!
!
!
select {!
go func() {!
case j := <- jobsource:!
for {!
free.jobs <- j!
var free *worker!
free.count++!
min := depth!
!
for _, w := range workers {!
case w := <- done:!
if w.count < min {!
w.count—!
free = w!
}!
min = w.count!
}!
}!
}()!
}!
!
!
return jobs!
var jobsource chan *job!
}!
if free != nil {!
jobsource = jobs!
}!
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