In software architecture, publish–subscribe is a messaging pattern where senders of messages, called publishers, do not program the messages to be sent directly to specific receivers, called subscribers, but instead characterize published messages into classes without knowledge of which subscribers, if any, there may be. Similarly, subscribers express interest in one or more classes and only receive messages that are of interest, without knowledge of which publishers, if any, there are.
Publish & Subscribe to events using an Event AggregatorLars-Erik Kindblad
These slides gives guides you through what the Publish-Subscribe pattern is, how to create an Event Aggregator, how you can use it in the UI and in other layers and 2 code samples that refactors from a non pub-sub architecture to a pub-sub architecture.
This full detailed presentation on Enterprise message using JMS. This will provide details required from a junior programmer to architect level. Some of the information presented is inspired by some authors from various sources.
In software architecture, publish–subscribe is a messaging pattern where senders of messages, called publishers, do not program the messages to be sent directly to specific receivers, called subscribers, but instead characterize published messages into classes without knowledge of which subscribers, if any, there may be. Similarly, subscribers express interest in one or more classes and only receive messages that are of interest, without knowledge of which publishers, if any, there are.
Publish & Subscribe to events using an Event AggregatorLars-Erik Kindblad
These slides gives guides you through what the Publish-Subscribe pattern is, how to create an Event Aggregator, how you can use it in the UI and in other layers and 2 code samples that refactors from a non pub-sub architecture to a pub-sub architecture.
This full detailed presentation on Enterprise message using JMS. This will provide details required from a junior programmer to architect level. Some of the information presented is inspired by some authors from various sources.
MuleSoft Surat Virtual Meetup#26 - Implementing Hybrid MuleSoft Runtime - Anypoint Clustering and Server Group | Competing and Fault Tolerance Queue Consumer Pattern
Overview of message oriented middleware technology (MOM).
Message Oriented Middleware allows asynchronous operation between sender and receiver of information. This greatly reduces temporal coupling and allows building flexible and extensible application architectures. Message queues managed by message brokers are used as information exchanges between sender and receiver. The subscribe-publish pattern allows producers and consumers to share information through message brokers without any direct coupling between them. Various message oriented protocols like MSMQ, AMQP, XMPP and MQTT have emerged that serve the diverse needs of different environments.
Chat application through client server management system project.pdfKamal Acharya
This project focused on creating a chatting application with communication environment. The objective of our project is to build a chatting system to facilitate the communication between two or more clients to obtain an effective channel among the clients themselves. For the application itself, this system can serve as a link to reach out for all clients. The design of the system depends on socket concept where is a software endpoint that establishes bidirectional communication between a server program and one or more client programs. Languages that will be used for the development of this system: Java Development Kit (JDK): is a development environment for building applications and components using the Java programming language.
MuleSoft Surat Virtual Meetup#26 - Implementing Hybrid MuleSoft Runtime - Anypoint Clustering and Server Group | Competing and Fault Tolerance Queue Consumer Pattern
Overview of message oriented middleware technology (MOM).
Message Oriented Middleware allows asynchronous operation between sender and receiver of information. This greatly reduces temporal coupling and allows building flexible and extensible application architectures. Message queues managed by message brokers are used as information exchanges between sender and receiver. The subscribe-publish pattern allows producers and consumers to share information through message brokers without any direct coupling between them. Various message oriented protocols like MSMQ, AMQP, XMPP and MQTT have emerged that serve the diverse needs of different environments.
Chat application through client server management system project.pdfKamal Acharya
This project focused on creating a chatting application with communication environment. The objective of our project is to build a chatting system to facilitate the communication between two or more clients to obtain an effective channel among the clients themselves. For the application itself, this system can serve as a link to reach out for all clients. The design of the system depends on socket concept where is a software endpoint that establishes bidirectional communication between a server program and one or more client programs. Languages that will be used for the development of this system: Java Development Kit (JDK): is a development environment for building applications and components using the Java programming language.
First Steps with Globus Compute Multi-User EndpointsGlobus
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Prosigns: Transforming Business with Tailored Technology SolutionsProsigns
Unlocking Business Potential: Tailored Technology Solutions by Prosigns
Discover how Prosigns, a leading technology solutions provider, partners with businesses to drive innovation and success. Our presentation showcases our comprehensive range of services, including custom software development, web and mobile app development, AI & ML solutions, blockchain integration, DevOps services, and Microsoft Dynamics 365 support.
Custom Software Development: Prosigns specializes in creating bespoke software solutions that cater to your unique business needs. Our team of experts works closely with you to understand your requirements and deliver tailor-made software that enhances efficiency and drives growth.
Web and Mobile App Development: From responsive websites to intuitive mobile applications, Prosigns develops cutting-edge solutions that engage users and deliver seamless experiences across devices.
AI & ML Solutions: Harnessing the power of Artificial Intelligence and Machine Learning, Prosigns provides smart solutions that automate processes, provide valuable insights, and drive informed decision-making.
Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
SOCRadar Research Team: Latest Activities of IntelBrokerSOCRadar
The European Union Agency for Law Enforcement Cooperation (Europol) has suffered an alleged data breach after a notorious threat actor claimed to have exfiltrated data from its systems. Infamous data leaker IntelBroker posted on the even more infamous BreachForums hacking forum, saying that Europol suffered a data breach this month.
The alleged breach affected Europol agencies CCSE, EC3, Europol Platform for Experts, Law Enforcement Forum, and SIRIUS. Infiltration of these entities can disrupt ongoing investigations and compromise sensitive intelligence shared among international law enforcement agencies.
However, this is neither the first nor the last activity of IntekBroker. We have compiled for you what happened in the last few days. To track such hacker activities on dark web sources like hacker forums, private Telegram channels, and other hidden platforms where cyber threats often originate, you can check SOCRadar’s Dark Web News.
Stay Informed on Threat Actors’ Activity on the Dark Web with SOCRadar!
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Navigating the Metaverse: A Journey into Virtual Evolution"Donna Lenk
Join us for an exploration of the Metaverse's evolution, where innovation meets imagination. Discover new dimensions of virtual events, engage with thought-provoking discussions, and witness the transformative power of digital realms."
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The U.S. Geological Survey (USGS) has made substantial investments in meeting evolving scientific, technical, and policy driven demands on storing, managing, and delivering data. As these demands continue to grow in complexity and scale, the USGS must continue to explore innovative solutions to improve its management, curation, sharing, delivering, and preservation approaches for large-scale research data. Supporting these needs, the USGS has partnered with the University of Chicago-Globus to research and develop advanced repository components and workflows leveraging its current investment in Globus. The primary outcome of this partnership includes the development of a prototype enterprise repository, driven by USGS Data Release requirements, through exploration and implementation of the entire suite of the Globus platform offerings, including Globus Flow, Globus Auth, Globus Transfer, and Globus Search. This presentation will provide insights into this research partnership, introduce the unique requirements and challenges being addressed and provide relevant project progress.
Cyaniclab : Software Development Agency Portfolio.pdfCyanic lab
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Innovating Inference - Remote Triggering of Large Language Models on HPC Clus...Globus
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Custom Healthcare Software for Managing Chronic Conditions and Remote Patient...Mind IT Systems
Healthcare providers often struggle with the complexities of chronic conditions and remote patient monitoring, as each patient requires personalized care and ongoing monitoring. Off-the-shelf solutions may not meet these diverse needs, leading to inefficiencies and gaps in care. It’s here, custom healthcare software offers a tailored solution, ensuring improved care and effectiveness.
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JASMIN is the UK’s high-performance data analysis platform for environmental science, operated by STFC on behalf of the UK Natural Environment Research Council (NERC). In addition to its role in hosting the CEDA Archive (NERC’s long-term repository for climate, atmospheric science & Earth observation data in the UK), JASMIN provides a collaborative platform to a community of around 2,000 scientists in the UK and beyond, providing nearly 400 environmental science projects with working space, compute resources and tools to facilitate their work. High-performance data transfer into and out of JASMIN has always been a key feature, with many scientists bringing model outputs from supercomputers elsewhere in the UK, to analyse against observational or other model data in the CEDA Archive. A growing number of JASMIN users are now realising the benefits of using the Globus service to provide reliable and efficient data movement and other tasks in this and other contexts. Further use cases involve long-distance (intercontinental) transfers to and from JASMIN, and collecting results from a mobile atmospheric radar system, pushing data to JASMIN via a lightweight Globus deployment. We provide details of how Globus fits into our current infrastructure, our experience of the recent migration to GCSv5.4, and of our interest in developing use of the wider ecosystem of Globus services for the benefit of our user community.
Into the Box Keynote Day 2: Unveiling amazing updates and announcements for modern CFML developers! Get ready for exciting releases and updates on Ortus tools and products. Stay tuned for cutting-edge innovations designed to boost your productivity.
Experience our free, in-depth three-part Tendenci Platform Corporate Membership Management workshop series! In Session 1 on May 14th, 2024, we began with an Introduction and Setup, mastering the configuration of your Corporate Membership Module settings to establish membership types, applications, and more. Then, on May 16th, 2024, in Session 2, we focused on binding individual members to a Corporate Membership and Corporate Reps, teaching you how to add individual members and assign Corporate Representatives to manage dues, renewals, and associated members. Finally, on May 28th, 2024, in Session 3, we covered questions and concerns, addressing any queries or issues you may have.
For more Tendenci AMS events, check out www.tendenci.com/events
Large Language Models and the End of ProgrammingMatt Welsh
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A Comprehensive Look at Generative AI in Retail App Testing.pdfkalichargn70th171
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Venez le découvrir lors de cette session ignite
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Globus Compute wth IRI Workflows - GlobusWorld 2024Globus
As part of the DOE Integrated Research Infrastructure (IRI) program, NERSC at Lawrence Berkeley National Lab and ALCF at Argonne National Lab are working closely with General Atomics on accelerating the computing requirements of the DIII-D experiment. As part of the work the team is investigating ways to speedup the time to solution for many different parts of the DIII-D workflow including how they run jobs on HPC systems. One of these routes is looking at Globus Compute as a way to replace the current method for managing tasks and we describe a brief proof of concept showing how Globus Compute could help to schedule jobs and be a tool to connect compute at different facilities.
3. Publish-Subscribe Messaging
When multiple applications need to receive the same messages, Publish-Subscribe
Messaging is used. The central concept in a Publish-Subscribe messaging system is
the Topic. Multiple Publishers may send messages to a Topic, and all Subscribers
to that Topic receive all the messages sent to that Topic. This model, as shown in
Figure 1, is extremely useful when a group of applications want to notify each
other of a particular occurrence.
The point to note in Publish-Subscribe Messaging is that, there may be multiple
Senders and multiple Receivers.
4.
5. Point-To-Point Messaging
When one process needs to send a message to another process, Point-To-Point
Messaging can be used. However, this may or may not be a one-way relationship.
The client to a Messaging system may only send messages, only receive messages,
or send and receive messages. At the same time, another client can also send
and/or receive messages. In the simplest case, one client is the Sender of the
message and the other client is the Receiver of the message.
There are two basic types of Point-to-Point Messaging systems. The first one involves
a client that directly sends a message to another client. The second and more
common implementation is based on the concept of a Message Queue. Such a
system is shown in Figure 2.
The point to note in Point-to-Point messaging is that, even though there may be
multiple Senders of messages, there is only a single Receiver for the messages.
6.
7. Strength of PSA
● Provides abstraction for the publishers and subscribers
● Space decoupling, time decoupling and synchronization decoupling
● Adds modularity to a messaging system
● Allows to add new and break services
8. Advantage
● A major advantage is the simplicity and flexibility of decentralization
implementation as this enables the system to support a large number
of clients and huge amount of data transfers. Highly scalable
9. Weakness of PSA
● Potential loss of messages due to the events needed to be pruned
● Example: Publisher may produce a very large number of events and it
will be inefficient to publish all of them as events as and so there
should be a mechanism to prune the event before
publishing so as not to overwhelm the
systems.
11. Problem statement/Business Logic
Overview
Matching & Dispatching
Choice of ‘information
spaces’
Complexity of subscriptions
Performance
Distributed Control
Application Level Routing
Reliability & Sequencing
Context
A state trackable message
queue that stores incoming
messages of the publisher
based on the current state of
the subscriber
Problem statement
No guarantee of message
delivery.
Less control over ordering of
messages
Current state of a subscriber
cannot be tracked hence
leading to redundant
requests.
14. Why Python?
- Better Networking API i.e socket programming
- Better developer community support
- Better thread library
- Support both OOP and functional programming paradigms
16. 1
Publisher and
subscriber are
registered to Broker
2
Topics are created
along with their
respective message
queues
3
Subscriber starts
listening to posts
4
Publisher publishes
messages related to
topics
5
Broker routes the
messages relating to
corresponding topics
to subscribers
18. ● Mediator pattern is used to reduce communication complexity between
multiple objects or classes.
● This pattern provides a mediator class which normally handles all the
communications between different classes and supports easy maintenance
of the code by loose coupling.
● Mediator pattern falls under behavioral pattern category.
19. Usage
● The Handler thread receives messages from Publisher
and the Dispatcher thread dispatches the received
messages to the concerned subscribers.
● So these threads needed a way to communicate with
themselves so a mediator was constructed by
considering all thread synchronisation problem.
20. Class Mediator
Def __init__(self):
Pipeline =
create_blocking_queue()
Def send_to_dispatcher(msg)
pipeline.put(msg)
Def receive_from_handler()
Return pipeline.pop()
Class Handler(Thread):
Def __init__(self,Mediator mediator):
Def run():
//do work
//receive message(msg)
from
Class Dispatcher(Thread):
Def __init_(self,Mediator
mediator)
Def run():
Msg =
mediator.receiver_from_handler()
//dispatch Msg to the
consumers
23. ● Decorator pattern allows a user to add new functionality to
an existing object without altering its structure. This type of
design pattern comes under structural pattern as this
pattern acts as a wrapper to existing class.
● This pattern creates a decorator class which wraps the
original class and provides additional functionality keeping
class methods signature intact.
24.
25. Usage
● Router class includes the logic of routing the messages that broker has
received from publishers to subscribers.
● In order to distribute the load of routing from broker to subscriber, each
subscriber also has to route messages to other subscriber.
● Implementation logic of routing will be different in subscriber from what
was used in broker, hence we need to add new functionalities to router
class.
Thus, we create a RouterDecorator class to add new routing feature as per
the requirement of subscriber without modifying the class Router
26. Class Router:
Def __init__(self):
//construct object
Def route(consumers):
//route messages to consumers
Class RouterDecorator(Router):
Router router;
Def __init__(self)
//initialise router object
Def route(consumers): //as used by broker
router.route(consumers)
Def route_for_consumer(consumers): //used by consumer
// different implementation of route() for consumers
29. ● Singleton pattern is one of the simplest design patterns in Java. This type of
design pattern comes under creational pattern as this pattern provides one of
the best ways to create an object.
● This pattern involves a single class which is responsible to create an object while
making sure that only single object gets created. This class provides a way to
access its only object which can be accessed directly without need to instantiate
the object of the class.
30. ● Create a SingleObject class.
SingleObject class have its constructor
as private and have a static instance
of itself.
● SingleObject class provides a static
method to get its static instance to
outside world.SingletonPatternDemo,
our demo class will use SingleObject
class to get a SingleObjectobject.
31. Usage
● Broker is always listening to specific ports where subscriber and
publisher receive and send messages respectively.
● We cannot instantiate classes like ConsumerAcceptor and Handler more
than once since they listen to only specific ports and, binding sockets to
ports that are already in use is an invalid operation.
● Hence, we use Singleton class to make sure that class
ConsumerAcceptor and Handler get instantiated only once.
32. Class ConsumerAcceptor(Thread):
INSTANCE=None
Def __init__(self)
If cls.INSTANCE is not None:
Raise ValueError(“Already
Instantiated”)
//else initialise object
Def getInstance():
If cls.INSTANCE is None:
cls.INSTANCE =
ConsumerAcceptor()
Return cls.INSTANCE
C = ConsumerAcceptor.getInstance()