The document discusses concurrency and the actor model. It notes that as processors are no longer getting significantly faster, programs need to be parallelized to run faster. The actor model is introduced as a way to build concurrent programs where actors communicate asynchronously by message passing and have no shared state, avoiding issues like race conditions. Several Ruby libraries and frameworks for implementing the actor model are described, including Celluloid and Akka. The advantages of the actor model like encapsulation and decentralization are highlighted, though issues like potential for livelocks are also noted.
Modus CTO, Jay Garcia's presentation at the Time, Inc. Watecooler Series March 30, 2011.
JavaScript has come a long way since the 90's and has been proven to be the programming language with the most investment today.
With all the attention to the language, there are many resources on the web that promote less than optimal development patterns, which can hurt performance and maintainability.
In this discussion, Jay Garcia will reveal secrets behind the best JavaScript development techniques that will help your web pages scream.
Many services and applications are ill-equipped to handle a sudden rush of popularity, so their services either become unavailable or unbearably slow. By taking a chapter from the ant colonies in the wild, where their strength lies in their numbers and their ability to work together towards a common goal, you can achieve greater performance, more redundancy, higher availability and have the ability to scale services up and down as required easily. By leveraging systems such as gearman, memcache, daemons, message queues, load balancers and more, you too can enter the world of distributed systems and scalability.
Modus CTO, Jay Garcia's presentation at the Time, Inc. Watecooler Series March 30, 2011.
JavaScript has come a long way since the 90's and has been proven to be the programming language with the most investment today.
With all the attention to the language, there are many resources on the web that promote less than optimal development patterns, which can hurt performance and maintainability.
In this discussion, Jay Garcia will reveal secrets behind the best JavaScript development techniques that will help your web pages scream.
Many services and applications are ill-equipped to handle a sudden rush of popularity, so their services either become unavailable or unbearably slow. By taking a chapter from the ant colonies in the wild, where their strength lies in their numbers and their ability to work together towards a common goal, you can achieve greater performance, more redundancy, higher availability and have the ability to scale services up and down as required easily. By leveraging systems such as gearman, memcache, daemons, message queues, load balancers and more, you too can enter the world of distributed systems and scalability.
Compelling location-based services require more than simple “what’s near me?” operations. The Open Street Map dataset is a perfect example of a rich geographically-based wiki that can be used for much more than map rendering.
With the newly released Neo4j Spatial, any data can be adapted to complex queries with geographic components like “Select all streets in the Municipality of NYC where at least 2 of my friends are walking right now”.
The talk will demonstrate the important benefits of modeling geodata in a graph, the main components needed to expose data to geo stacks like map servers, and explain how the Open Street Map dataset is modeled in Neo4j. I’ll show how using Neo4j unlocks the full potential of the OSM data far beyond just rendering maps.
There will also be some cool examples of Neo4j Spatial, from Telecomms network planning, Web-based AJAX GIS systems, topology editing and routing to REST and Web Feature Service endpoints, all in a single stack.
This is Location-based Services on steroids!
We keep thinking we can write better CSS if we just try harder, that the next site will be clean and stay that way. This presentation shows that in fact, messy CSS is the direct result of our worst best-practices. We need to reexamine those assumptions with an eye to practicality and scalability as well as accessibility, standards, and fabulous design.
Stackbox CMS: Next-Generation Content ManagementVance Lucas
Stackbox is an ambitious new open source content management system aiming to end the “back-end” editing paradigm for good. All content editing is done directly in-place and on-page through drag-and-drop, JavaScript and AJAX methods coupled with a simple and efficient server-side templating system. Learn about the design and development decisions that led to the creation of Stackbox.
In some situations, it's useful to be able to evaluate a Rails application quickly.
I talk about how I work to get the most data as possible to get a good picture of whether an application is well-maintained, and will be easy to maintain later.
thought experiment about how to find objects in the home quicky using technology (while tidying up and putting the objects in the right place is obviously the correct solution)
Compelling location-based services require more than simple “what’s near me?” operations. The Open Street Map dataset is a perfect example of a rich geographically-based wiki that can be used for much more than map rendering.
With the newly released Neo4j Spatial, any data can be adapted to complex queries with geographic components like “Select all streets in the Municipality of NYC where at least 2 of my friends are walking right now”.
The talk will demonstrate the important benefits of modeling geodata in a graph, the main components needed to expose data to geo stacks like map servers, and explain how the Open Street Map dataset is modeled in Neo4j. I’ll show how using Neo4j unlocks the full potential of the OSM data far beyond just rendering maps.
There will also be some cool examples of Neo4j Spatial, from Telecomms network planning, Web-based AJAX GIS systems, topology editing and routing to REST and Web Feature Service endpoints, all in a single stack.
This is Location-based Services on steroids!
We keep thinking we can write better CSS if we just try harder, that the next site will be clean and stay that way. This presentation shows that in fact, messy CSS is the direct result of our worst best-practices. We need to reexamine those assumptions with an eye to practicality and scalability as well as accessibility, standards, and fabulous design.
Stackbox CMS: Next-Generation Content ManagementVance Lucas
Stackbox is an ambitious new open source content management system aiming to end the “back-end” editing paradigm for good. All content editing is done directly in-place and on-page through drag-and-drop, JavaScript and AJAX methods coupled with a simple and efficient server-side templating system. Learn about the design and development decisions that led to the creation of Stackbox.
In some situations, it's useful to be able to evaluate a Rails application quickly.
I talk about how I work to get the most data as possible to get a good picture of whether an application is well-maintained, and will be easy to maintain later.
thought experiment about how to find objects in the home quicky using technology (while tidying up and putting the objects in the right place is obviously the correct solution)
The internet of thing is hot. This talk describes the trends that led to this phenomenon.
Augmented reality links online content to physical object - i talk about the different ways this can happen.
Then i talk about physical computing: making things talk, using Arduino, mainly.
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/
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.
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.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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.
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.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
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.
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.
3. “... for the first time in history, no one is
building a much faster sequential processor.
If you want your programs to run
significantly faster (...) you’re going to have to
parallelize your program.”
Hennessy and Patterson
“Computer Architectures” (4th edition, 2007)
Monday 30 May 2011
9. Hewitt et al. 1973
no shared state
in response to a message, an actor can:
make local decisions
create more actors
send more messages
determine how to respond to the next message
received
Monday 30 May 2011
10. Hewitt et al. 1973
Generalization of the lambda
calculus
Monday 30 May 2011
11. Inspiration
artificial intelligence
‘quantum mechanics’ - observing details
by which the order of arrival of
messages for an actor is determined
can affect result
Monday 30 May 2011
12. The point
only actors - no global state
partial order of execution
from http://pragprog.com/titles/vspcon/programming-concurrency-on-the-jvm
Monday 30 May 2011
13. Implementations
• using threads/processes
• async messaging - mailbox
• pattern matching on incoming messages
• actors = state machines.
Monday 30 May 2011
14. Lifecycle
from http://pragprog.com/titles/vspcon/programming-concurrency-on-the-jvm
Monday 30 May 2011
15. Sleeping barber
shop with x chairs
1 barber
no customer: sleep. customers: cut hairs
customer
if barber is sleeping: wake him up
else if enough chairs take a chair
else leave
Monday 30 May 2011
26. Erlectricity
require 'rubygems'
require 'erlectricity'
receive do |f|
f.when([:echo, String]) do |text|
f.send!([:result, "You said: #{text}"])
f.receive_loop
end
end
https://github.com/mojombo/erlectricity
Monday 30 May 2011
27. Reia or Elixir
languages on erlang vm
friendlier, more ruby-like, OO
Monday 30 May 2011
28. Scala
“We also included enhancements to make it
easier to call from Ruby into Scala libraries,
which has enabled the Lift web framework to
offer support for Ruby.” Charles Nutter, ‘JRuby 1.6 released,
now what ?’
http://www.engineyard.com/blog/2011/jruby-1-6-released-now-what/
Actors in standard library
Monday 30 May 2011
29. Akka
actor model + software transactional memory
java and scala
Monday 30 May 2011
30. Akka
• sending: reply is possible or not, sync or
async
• supervision: several strategies
• as library or as framework
• local and distributed
Monday 30 May 2011
36. Time to control
shared state ?
Change RubySpec:
default: variables not shared between
threads?
integrate better concurrency primitives
into the Ruby stdlib ?
Monday 30 May 2011
