MQSeries is a middleware product that implements a messaging and queuing framework to allow programs to communicate asynchronously by sending messages to queues. It provides assured delivery of messages across platforms and languages. The core components of MQSeries include queue managers, queues, message channels, and a messaging programming interface. MQSeries uses message logging and recovery to ensure reliable and persistent message delivery.
Middleware and Middleware in distributed applicationRishikese MR
The seminar discuss about the common middleware concept and middleware in distributed applications .Also we discuss about 4 different types of middleware. MOM( Message oriented Middleware), ORB (object request broker), TP Monitors, Request procedure calls RPC.
The slide also gives the advantages and disadvantages of each.
A peek into the middle of the enterprise software architecture stack.
A curtain raiser into the middleware of the software technology stack. Showcases Types of middleware, configuration possibilities, high level components, features, messaging models, deployment,
Middleware is a layer between distributed applications and the operating system that provides common services and hides the complexity of distributed systems. It supports various interaction patterns including remote procedure call, object-oriented remote method invocation, message-oriented asynchronous communication, and event-based publish-subscribe. Middleware technologies like CORBA, Java RMI, and message brokers aim to simplify distributed programming while providing reliability, scalability, and other services for building distributed applications.
Layer between OS and distributed applications,Hides complexity and heterogeneity of distributed system ,Bridges gap between low-level OS communications and programming language abstractions,Provides common programming abstraction and infrastructure for distributed applications.
An Introduction to the Message Queuing Technology & IBM WebSphere MQRavi Yogesh
This document provides an introduction to message queuing technology and IBM WebSphere MQ. It discusses the basics of message queuing including message and queue structures, persistence, and types. It then describes how message queuing benefits banking applications by enabling asynchronous communication. The document reviews different message queuing implementations and focuses on IBM WebSphere MQ, describing how it handles over 10 billion messages daily supporting over $1 quadrillion in transactions.
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.
Overview of Microsoft Message Queueing (MSMQ) messaging technology.
MSMQ is Microsoft's message queueing technology that also integrates well into the newer Windows Communication Foundation framework.
MSMQ provides most of the features and functionality typical of message queueing systems.
MOM provides a clean method of communication between disparate software applications and emerged as a approach that distributed enterprise systems are built
Middleware and Middleware in distributed applicationRishikese MR
The seminar discuss about the common middleware concept and middleware in distributed applications .Also we discuss about 4 different types of middleware. MOM( Message oriented Middleware), ORB (object request broker), TP Monitors, Request procedure calls RPC.
The slide also gives the advantages and disadvantages of each.
A peek into the middle of the enterprise software architecture stack.
A curtain raiser into the middleware of the software technology stack. Showcases Types of middleware, configuration possibilities, high level components, features, messaging models, deployment,
Middleware is a layer between distributed applications and the operating system that provides common services and hides the complexity of distributed systems. It supports various interaction patterns including remote procedure call, object-oriented remote method invocation, message-oriented asynchronous communication, and event-based publish-subscribe. Middleware technologies like CORBA, Java RMI, and message brokers aim to simplify distributed programming while providing reliability, scalability, and other services for building distributed applications.
Layer between OS and distributed applications,Hides complexity and heterogeneity of distributed system ,Bridges gap between low-level OS communications and programming language abstractions,Provides common programming abstraction and infrastructure for distributed applications.
An Introduction to the Message Queuing Technology & IBM WebSphere MQRavi Yogesh
This document provides an introduction to message queuing technology and IBM WebSphere MQ. It discusses the basics of message queuing including message and queue structures, persistence, and types. It then describes how message queuing benefits banking applications by enabling asynchronous communication. The document reviews different message queuing implementations and focuses on IBM WebSphere MQ, describing how it handles over 10 billion messages daily supporting over $1 quadrillion in transactions.
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.
Overview of Microsoft Message Queueing (MSMQ) messaging technology.
MSMQ is Microsoft's message queueing technology that also integrates well into the newer Windows Communication Foundation framework.
MSMQ provides most of the features and functionality typical of message queueing systems.
MOM provides a clean method of communication between disparate software applications and emerged as a approach that distributed enterprise systems are built
The document discusses IBM's MQ infrastructure including MQ 7.1, MQ AMS, and MQ FTE. It provides an agenda covering universal connectivity with MQ, MQ File Transfer Edition, MQ security with MQ AMS, and features of MQ 7.1 including security policies. The document is presented by AJ Aronoff from Prolifics and focuses on MQ infrastructure for security and high availability.
This document provides an overview of message-oriented middleware (MOM) and IBM Message Queue (IBM MQ). It defines key MOM concepts like asynchronous communication, loose coupling, point-to-point and publish-subscribe messaging patterns. It also describes transaction handling, message and queue definitions. Additionally, it outlines IBM MQ objects like queue managers, queues, channels and listeners. Finally, it mentions IBM MQ administration tools for command line and graphical interfaces.
This document discusses message-oriented middleware (MOM). It defines MOM as a type of middleware that supports the exchange of general-purpose messages in a distributed application environment. The document outlines several benefits of MOM, including decoupling applications, supporting integration across platforms/languages, providing reliable communication, and enabling scalability. It also discusses common MOM concepts like brokers, queues, topics, and delivery semantics. Finally, it covers some popular MOM implementations like JMS, AMQP, and OpenMAMA.
This document provides an overview of WebSphere MQ Administration training notes. It discusses key concepts in message-oriented middleware including messaging, queuing, MQSeries, and the Message Queue Interface. It also describes common MQ objects like queue managers, queues, channels, and messages. The document outlines how applications use MQ calls to connect to queue managers and put and get messages from queues.
The key difference between distributed and uniprocessor systems is interprocess communication in distributed systems. The OSI model defines layers for networking including physical, data link, network, transport, and application layers. Remote Procedure Call (RPC) allows calling procedures on remote systems similarly to local calls by marshalling parameters and results. Group communication enables one-to-many and one-to-all communication using multicast and broadcast. Asynchronous Transfer Mode (ATM) networks use fixed size cells over virtual circuits to efficiently support both constant and bursty network traffic.
The document provides an overview of MQ Series and JMS messaging technologies. It describes key concepts in messaging like queues, messages, and message properties. It then details features of MQ Series including queue managers, queues, channels, and the MQI API. Finally it covers Java Message Service (JMS) including its programming model, message types, and how JMS clients function as producers and consumers.
Middleware facilitates interactions between applications across different computing platforms by providing programming abstractions. Common types of middleware include RPC-based systems, transaction processing (TP) monitors, object brokers, and message-oriented middleware. RPC extends procedure calls to work remotely, while TP monitors add transaction management to distributed RPC calls. Object brokers like CORBA standardize object distribution, and message queues in message-oriented middleware enable asynchronous communication.
Introduction to Message-Oriented MiddlewareEdward Curry
The document provides an introduction to message-oriented middleware (MOM). It discusses interaction models like synchronous and asynchronous communication. It compares MOM to remote procedure call (RPC), noting MOM's advantages in loose coupling, reliability, scalability, and availability. Key concepts of MOM covered include message queues, point-to-point and publish/subscribe messaging models. The role of MOM in service-oriented architectures using XML, web services, and SOAP is also summarized.
IBM MQ (formerly known as MQSeries) is a middleware messaging product that allows applications on different platforms to communicate asynchronously by sending and receiving messages. It guarantees message delivery and supports advanced features like triggering actions on message receipt. MQ provides a common API for applications to connect to message queues, publish/consume messages, and ensures delivery across heterogeneous systems. It is widely used to integrate legacy mainframe systems with modern platforms.
This session talks about how to configure WAS using SIBus (WAS Default messaging) for enterprise grade messaging needs. The various topologies, configuration parameters to set in order to achieve a reliable and scalable messaging environment in WebSphere Application Server.
This document presents an overview of asynchronous message passing. It discusses key aspects such as asynchronous meaning not occurring at the same time and without fixed time intervals. It also describes messages being information sent from a sender to receiver. Additionally, it covers Linda experience which uses a global mailbox and tuple space that acts like a bulletin board for concurrent processes. Interrupt messages and potential lost messages are also summarized along with references in the bibliography.
The document discusses various models for distributed systems including architectural, interaction, failure, software layer, and process models. It describes key aspects of distributed systems like client-server, peer-to-peer, and mobile code architectures. Requirements for distributed designs like performance, quality of service, caching, and dependability are covered. Fundamental models for message passing between processes are defined including states, configurations, computation and delivery events.
Architecture of message oriented middlewareLikan Patra
Message-oriented middleware (MOM) facilitates asynchronous messaging between components. Common MOM implementations include Java Message Service (JMS), Microsoft Message Queuing (MSMQ), and IBM MQSeries. JMS supports publish-subscribe and point-to-point messaging models. MSMQ stores messages in queues managed by queue managers, while MQSeries uses objects like queue managers and queues that must be set up after installation. MOM plays an important role in enabling communication between distributed software systems.
This document discusses different types of communication including unicast, broadcast, multicast, and indirect communication. It provides details on multicast communication including that it allows one-to-many communication where a message is sent to multiple devices in a group. It also discusses characteristics of multicast including fault tolerance and data distribution. Examples of multicast applications like financial services and remote conferencing are provided. The document then covers various forms of indirect communication such as group communication, publish-subscribe systems, message queues, and shared memory. It provides details on topics like event filtering, routing, and subscription models for publish-subscribe systems.
This document discusses two common models for distributed computing communication: message passing and remote procedure calls (RPC). It describes the basic primitives and design issues for each model. For message passing, it covers synchronous vs asynchronous and blocking vs non-blocking primitives. For RPC, it explains the client-server model and how stubs are used to convert parameters and return results between machines. It also discusses binding, parameter passing techniques, and ensuring error handling and execution semantics.
This document discusses message passing architectures. The key points are:
1) Message passing architectures allow processors to communicate data without a global memory by sending messages. Each processor has local memory and communicates via messages.
2) Important factors in message passing networks are link bandwidth and network latency.
3) Processes running on different processors use external channels to exchange messages, while processes on the same processor use internal channels. This avoids the need for synchronization.
Middleware is software that connects applications running on different operating systems and networks. It provides services that allow applications to communicate with each other by hiding the complexity of the operating systems and networks. Common types of middleware include remote procedure calls, message-oriented middleware, object request brokers, and transaction processing monitors. Middleware is used by many large companies like IBM and Oracle and provides benefits such as increased flexibility, reduced costs, and improved management of IT services.
IBM MQ (formerly known as MQSeries) is middleware that implements message queuing using queues to allow programs to communicate asynchronously. It runs on many platforms and supports transactional message passing between programs. Key objects in MQ include queue managers, queues, channels, and messages. Messages are placed on queues and can be retrieved later, even if the sending program has ended. MQ uses logging and recovery to ensure reliable message delivery even if failures occur. It provides benefits like loose coupling between applications, assured delivery through persistence, and ability to integrate with transactional systems.
This document discusses the properties of minerals. It begins by defining a mineral as a naturally occurring solid substance that has a specific chemical composition and formula. It then outlines that minerals have physical, optical, and chemical properties. The document focuses on various physical properties of minerals such as hardness, luster, specific gravity, color, fracture, tenacity, streak, and cleavage. It provides details on how hardness and color are determined for minerals and explanations of streak and luster. The document also briefly mentions cleavage, fracture, specific gravity, and tenacity. It concludes by noting that minerals can be examined using light to study optical properties like refraction, dispersion, and birefringence.
The document discusses IBM's MQ infrastructure including MQ 7.1, MQ AMS, and MQ FTE. It provides an agenda covering universal connectivity with MQ, MQ File Transfer Edition, MQ security with MQ AMS, and features of MQ 7.1 including security policies. The document is presented by AJ Aronoff from Prolifics and focuses on MQ infrastructure for security and high availability.
This document provides an overview of message-oriented middleware (MOM) and IBM Message Queue (IBM MQ). It defines key MOM concepts like asynchronous communication, loose coupling, point-to-point and publish-subscribe messaging patterns. It also describes transaction handling, message and queue definitions. Additionally, it outlines IBM MQ objects like queue managers, queues, channels and listeners. Finally, it mentions IBM MQ administration tools for command line and graphical interfaces.
This document discusses message-oriented middleware (MOM). It defines MOM as a type of middleware that supports the exchange of general-purpose messages in a distributed application environment. The document outlines several benefits of MOM, including decoupling applications, supporting integration across platforms/languages, providing reliable communication, and enabling scalability. It also discusses common MOM concepts like brokers, queues, topics, and delivery semantics. Finally, it covers some popular MOM implementations like JMS, AMQP, and OpenMAMA.
This document provides an overview of WebSphere MQ Administration training notes. It discusses key concepts in message-oriented middleware including messaging, queuing, MQSeries, and the Message Queue Interface. It also describes common MQ objects like queue managers, queues, channels, and messages. The document outlines how applications use MQ calls to connect to queue managers and put and get messages from queues.
The key difference between distributed and uniprocessor systems is interprocess communication in distributed systems. The OSI model defines layers for networking including physical, data link, network, transport, and application layers. Remote Procedure Call (RPC) allows calling procedures on remote systems similarly to local calls by marshalling parameters and results. Group communication enables one-to-many and one-to-all communication using multicast and broadcast. Asynchronous Transfer Mode (ATM) networks use fixed size cells over virtual circuits to efficiently support both constant and bursty network traffic.
The document provides an overview of MQ Series and JMS messaging technologies. It describes key concepts in messaging like queues, messages, and message properties. It then details features of MQ Series including queue managers, queues, channels, and the MQI API. Finally it covers Java Message Service (JMS) including its programming model, message types, and how JMS clients function as producers and consumers.
Middleware facilitates interactions between applications across different computing platforms by providing programming abstractions. Common types of middleware include RPC-based systems, transaction processing (TP) monitors, object brokers, and message-oriented middleware. RPC extends procedure calls to work remotely, while TP monitors add transaction management to distributed RPC calls. Object brokers like CORBA standardize object distribution, and message queues in message-oriented middleware enable asynchronous communication.
Introduction to Message-Oriented MiddlewareEdward Curry
The document provides an introduction to message-oriented middleware (MOM). It discusses interaction models like synchronous and asynchronous communication. It compares MOM to remote procedure call (RPC), noting MOM's advantages in loose coupling, reliability, scalability, and availability. Key concepts of MOM covered include message queues, point-to-point and publish/subscribe messaging models. The role of MOM in service-oriented architectures using XML, web services, and SOAP is also summarized.
IBM MQ (formerly known as MQSeries) is a middleware messaging product that allows applications on different platforms to communicate asynchronously by sending and receiving messages. It guarantees message delivery and supports advanced features like triggering actions on message receipt. MQ provides a common API for applications to connect to message queues, publish/consume messages, and ensures delivery across heterogeneous systems. It is widely used to integrate legacy mainframe systems with modern platforms.
This session talks about how to configure WAS using SIBus (WAS Default messaging) for enterprise grade messaging needs. The various topologies, configuration parameters to set in order to achieve a reliable and scalable messaging environment in WebSphere Application Server.
This document presents an overview of asynchronous message passing. It discusses key aspects such as asynchronous meaning not occurring at the same time and without fixed time intervals. It also describes messages being information sent from a sender to receiver. Additionally, it covers Linda experience which uses a global mailbox and tuple space that acts like a bulletin board for concurrent processes. Interrupt messages and potential lost messages are also summarized along with references in the bibliography.
The document discusses various models for distributed systems including architectural, interaction, failure, software layer, and process models. It describes key aspects of distributed systems like client-server, peer-to-peer, and mobile code architectures. Requirements for distributed designs like performance, quality of service, caching, and dependability are covered. Fundamental models for message passing between processes are defined including states, configurations, computation and delivery events.
Architecture of message oriented middlewareLikan Patra
Message-oriented middleware (MOM) facilitates asynchronous messaging between components. Common MOM implementations include Java Message Service (JMS), Microsoft Message Queuing (MSMQ), and IBM MQSeries. JMS supports publish-subscribe and point-to-point messaging models. MSMQ stores messages in queues managed by queue managers, while MQSeries uses objects like queue managers and queues that must be set up after installation. MOM plays an important role in enabling communication between distributed software systems.
This document discusses different types of communication including unicast, broadcast, multicast, and indirect communication. It provides details on multicast communication including that it allows one-to-many communication where a message is sent to multiple devices in a group. It also discusses characteristics of multicast including fault tolerance and data distribution. Examples of multicast applications like financial services and remote conferencing are provided. The document then covers various forms of indirect communication such as group communication, publish-subscribe systems, message queues, and shared memory. It provides details on topics like event filtering, routing, and subscription models for publish-subscribe systems.
This document discusses two common models for distributed computing communication: message passing and remote procedure calls (RPC). It describes the basic primitives and design issues for each model. For message passing, it covers synchronous vs asynchronous and blocking vs non-blocking primitives. For RPC, it explains the client-server model and how stubs are used to convert parameters and return results between machines. It also discusses binding, parameter passing techniques, and ensuring error handling and execution semantics.
This document discusses message passing architectures. The key points are:
1) Message passing architectures allow processors to communicate data without a global memory by sending messages. Each processor has local memory and communicates via messages.
2) Important factors in message passing networks are link bandwidth and network latency.
3) Processes running on different processors use external channels to exchange messages, while processes on the same processor use internal channels. This avoids the need for synchronization.
Middleware is software that connects applications running on different operating systems and networks. It provides services that allow applications to communicate with each other by hiding the complexity of the operating systems and networks. Common types of middleware include remote procedure calls, message-oriented middleware, object request brokers, and transaction processing monitors. Middleware is used by many large companies like IBM and Oracle and provides benefits such as increased flexibility, reduced costs, and improved management of IT services.
IBM MQ (formerly known as MQSeries) is middleware that implements message queuing using queues to allow programs to communicate asynchronously. It runs on many platforms and supports transactional message passing between programs. Key objects in MQ include queue managers, queues, channels, and messages. Messages are placed on queues and can be retrieved later, even if the sending program has ended. MQ uses logging and recovery to ensure reliable message delivery even if failures occur. It provides benefits like loose coupling between applications, assured delivery through persistence, and ability to integrate with transactional systems.
This document discusses the properties of minerals. It begins by defining a mineral as a naturally occurring solid substance that has a specific chemical composition and formula. It then outlines that minerals have physical, optical, and chemical properties. The document focuses on various physical properties of minerals such as hardness, luster, specific gravity, color, fracture, tenacity, streak, and cleavage. It provides details on how hardness and color are determined for minerals and explanations of streak and luster. The document also briefly mentions cleavage, fracture, specific gravity, and tenacity. It concludes by noting that minerals can be examined using light to study optical properties like refraction, dispersion, and birefringence.
The document discusses various topics related to network security including encryption, authentication, and protocols. It provides an overview of symmetric and public key cryptography, algorithms like DES and RSA, digital signatures, protocols like SSL and IPsec, and applications like PGP. Common security threats like packet sniffing, IP spoofing, and denial of service attacks are also summarized.
This document provides an overview of the Internet and its applications. It discusses various topics including Internet architectures (Internet, intranet, extranet), communication applications (email, messaging, e-commerce, voice over IP), virtual private networks, WAN technologies, and audio/video streaming and conferencing.
The document discusses the Wireless Application Protocol (WAP), which was developed to allow mobile devices like phones to access the internet. WAP defines a set of communication protocols to standardize how internet content can be adapted for narrowband mobile bearers. It enables applications and services to be accessed from any wireless terminal, including cell phones, pagers, two-way radios and smart phones. WAP uses Wireless Markup Language (WML) instead of HTML to optimize content for mobile screens.
Did you know that your employees are likely spending 28 hours every week just trying to get work done? For a company with 5,000 knowledge workers at $30 an hour, that’s over $4 million in payroll alone.
In this presentation, you’ll discover exactly what a social intranet is and how it should be used to eliminate this problem—for real business value. (Hint: If your company has a social intranet already, it’s probably not being used to drive business value.)
Jive is the world’s #1 Social Business Platform. http://bit.ly/1aTo6Vq
Creating A Measurable Intranet Strategy Prescient Digital MediaCarmine Porco
In this 60 minute Webinar, participants will gain an understanding for:
* The real world challenges and benefits of intranet strategy
* How to quantify your intranet effectiveness with examples from a real case study of PNC Bank
* The importance of an intranet strategy
* Various research techniques to acquire employee input
* How to create measurable goals for your intranet
* Proven methodologies for executing the strategy
An intranet mail system provides secure internal email capabilities for an organization. It uses standard internet protocols like SMTP and POP3 but has a firewall for security. The system allows authorized users to communicate reliably and cost-effectively. Intranet email works similarly to regular email but is only accessible to organizational members. It enhances workforce productivity, communication, and promotes a common corporate culture at a low cost.
This document discusses various communication protocols including parallel buses, asynchronous serial buses, and synchronous serial buses. Parallel buses provide high speed and throughput but require many pins, while serial buses require fewer pins and can communicate over longer distances. Specific protocols covered include 1-Wire, RS-232, RS-485, Ethernet, SPI, and I2C. Each has advantages and disadvantages for different communication needs and system requirements.
1. An intranet is a private internal network that uses internet technologies like HTML and TCP/IP and is only accessible to authorized members of an organization. It provides collaboration and communication tools.
2. An extranet extends an organization's intranet to external partners, suppliers, and customers. It uses the same internet technologies and security measures as an intranet.
3. Both intranets and extranets provide advantages like low costs, easy access to information, and improved communication and collaboration. However, they also pose security and information overload risks that must be managed.
Communication protocols in Embedded Systems. This presentation focused mainly on lower level protocols. Ideal for the beginner to build understanding on these protocols like I2C, USB, SPI etc.
The document discusses intranets, their technology and uses. An intranet is a private internal network that uses internet technology for communication and information sharing within an organization. It allows improved internal communication and access to information. The technology behind intranets includes TCP/IP networks, firewall protected internet connectivity, web servers, databases and authoring tools. Intranets are advantageous as they are platform independent, easy to publish and maintain information on, and cost effective. Some disadvantages include potential security concerns and information overload. The document also discusses DNS, defining it as the distributed naming system that maps names to internet addresses and stores retrieval information in a global data store.
The document discusses Internet, Intranet, and Extranet. It defines Internet as a global network of computers that exchange information publicly. Intranet is a private network within an organization that uses the same protocols as the Internet but is only accessible to authorized users like employees. Extranet extends an organization's intranet to allow access to selected external users like suppliers or customers. Key benefits of intranets include improved productivity, communication and cost effectiveness for organizations.
Building or redesigning an intranet in 2016? Most intranet managers have an idea of where they want to go, but few have a formalized strategy and roadmap.
Your strategy is a plan about how to take action.
This presentation from intranet expert Steve Bynghall gives you a highly practical framework to derive and articulate your intranet strategy. Whether you’re part of a team with a new intranet project or the business owner of a stale and stagnant intranet, you'll find this presentation valuable..
Highlights:
What is an intranet strategy and why do you need one?
The importance of being objective: the discovery phase
Research sources: data inputs, stakeholder analysis, other sources
Formalizing the strategy and action plan
Communicating and socializing the strategy
his Course is about learning How Linux Processes Talk to each Other. This is a sub-domain of Linux System Programming. We shall explore various popular mechanism used in the industry through which Linux processes to exchange data with each other. We will go through the concepts in detail behind each IPC mechanism, discuss the implementation, and design and analyze the situation where the given IPC is preferred over others.
AWS Study Group - Chapter 07 - Integrating Application Services [Solution Arc...QCloudMentor
This document provides an overview of several AWS application services including SQS, SNS, Cognito, API Gateway, and WebSockets. It describes how SQS uses queues to asynchronously and reliably deliver messages between distributed components. SNS is a pub/sub messaging service that decouples systems using an event-driven model. Cognito provides authentication, authorization, and user management for web and mobile apps. API Gateway acts as a facade and endpoint for RESTful APIs. WebSockets in AWS can enable real-time communication using services like IoT and AppSync.
The Overview of Microservices ArchitectureParia Heidari
This document discusses monolithic architecture and microservices architecture. It begins by defining monolithic architecture as having a single code base with multiple components/modules. It then lists advantages like being simple to develop, test, deploy and scale, as well as drawbacks like flexibility, maintenance, reliability, and scaling challenges.
Microservices architecture is presented as a solution to problems with monolithic architecture. Each microservice has a specific focus and functionality. Benefits include improved testability, loose coupling, and ability to develop, deploy and scale services independently. Challenges include increased complexity of developing, testing and operating distributed systems.
The document provides examples and discusses strategies for migrating a monolithic system to microservices, technologies
This document discusses message queue architecture. It defines message queues as providing asynchronous communication where the sender and receiver do not need to interact at the same time. Messages are stored in the queue until retrieved. It describes how message queues work with producers publishing messages to an exchange which routes them to queues until handled by consumers. A message broker is described as mediating communication between applications by routing and transforming messages. Examples of message queue systems like ActiveMQ, RabbitMQ and SQS are provided. The document contrasts using message queues versus web services, noting how message queues allow for decoupling and ensure message delivery in failure scenarios.
The document discusses cloud computing and coordination of cloud applications using ZooKeeper. It provides an overview of challenges for cloud computing, architectural styles like client-server and REST, and workflows involving coordination of multiple activities. It then describes ZooKeeper as a distributed coordination service that implements consensus using Paxos. ZooKeeper provides reliable coordination through a replicated database, atomic broadcasts, and guarantees like sequential consistency.
Inter-Process Communication in distributed systemsAya Mahmoud
Inter-Process Communication is at the heart of all distributed systems, so we need to know the ways that processes can exchange information.
Communication in distributed systems is based on Low-level message passing as offered by the underlying network.
Message Queuing (MSMQ) technology enables applications running at different times to communicate across heterogeneous networks and systems that may be temporarily offline.
This is a small introduction to microservices. you can find the differences between microservices and monolithic applications. You will find the pros and cons of microservices. you will also find the challenges (Business/ technical) that you may face while implementing microservices.
Middleware provides an abstraction layer between distributed applications and operating system communication mechanisms. It hides the complexity of distributed systems and enables different styles of communication including remote procedure calls, object-oriented remote method invocation, message-oriented asynchronous messaging, and event-based publish-subscribe interactions. Common examples of middleware technologies discussed are RPC, CORBA, Java RMI, message-oriented middleware like JMS, and event-based systems using content-based routing of published events to subscribed interests. Middleware aims to support scalable many-to-many communication patterns while providing programming models suited to distributed applications.
The document discusses architectural models for distributed systems. It describes two types of models - architectural models and fundamental models. For architectural models, it covers communicating entities like processes, threads, objects, components; communication paradigms like inter-process communication, remote invocation, indirect communication; roles and responsibilities using client-server and peer models; and placement strategies like service provided by multiple servers and proxy servers. It also discusses architectural patterns like layering, platform, and middleware.
MQ Light for Bluemix - IBM Interconnect 2015 session AME4183Robert Nicholson
The document provides an overview and introduction to IBM's MQ Light service on Bluemix. Some key points:
- Bluemix is IBM's cloud platform that allows building, running, and managing applications. It provides services, tools for development and management, and flexible pricing models.
- MQ Light is a messaging service designed for application developers to create responsive and scalable applications. It has a simplified API and supports multiple programming languages.
- The demo section shows how to use the MQ Light service on Bluemix to send and receive messages from Node.js, Java, Ruby, and Python applications. It also integrates with services like Node-RED.
A high-level overview of Microservices architecture topics you should be familiar with before you actually start breaking your monolith into microservices
Velocity Conference '13: Asynchronous messaging for performance optimization,...Al Sargent
How do Google, Twitter, and Instagram ensure fast application performance at scale? One technique is asynchronous messaging using RabbitMQ to prevent application bottlenecks. In this session, we’ll cover common asynchronous messaging patterns and how to implement them in RabbitMQ, common pitfalls to avoid, and how to cluster RabbitMQ for increased scalability and reliability.
Distributed Systems Introduction and Importance SHIKHA GAUTAM
Distributed Systems Introduction and Importance. It covers the following Topics: Characterization of Distributed Systems: Introduction, Examples of distributed Systems, Resource sharing and the Web Challenges. Architectural models, Fundamental Models.
Theoretical Foundation for Distributed System: Limitation of Distributed system, absence of global clock, shared memory, Logical clocks ,Lamport’s & vectors logical clocks.
Concepts in Message Passing System.
The document discusses different system models for distributed systems. It describes two main types of models: architectural models and fundamental models. Architectural models consider the placement of components across a network and relationships between components. Variations of the client-server model are presented, including mobile code, mobile agents, network computers, and thin clients. Design requirements for distributed architectures including performance issues, quality of service, caching/replication, and dependability are also covered.
Andes: a Scalable persistent Messaging SystemSrinath Perera
Andes is a scalable and persistent messaging system that uses Cassandra for distributed storage and Zookeeper for coordination. It addresses challenges with scalability in dimensions of message throughput, number of queues and subscribers, and message size. Andes employs a publish/subscribe architecture where messages are stored in Cassandra and subscriber queues are updated, avoiding message routing. It also supports distributed queues with either strict ordering using distributed locks or best effort delivery. Initial testing shows Andes performs better than other brokers for throughput and scalability.
The document discusses the Open Systems Interconnection (OSI) reference model, which introduced standards for network communication. The OSI model organizes network functions into seven layers, with each layer building on the services provided by the previous layer. Layers 1-4 deal with flow of data through the network, while layers 5-7 deal with services for applications. The model helps ensure compatibility between different network technologies.
IBM IMPACT 2014 - AMC-1882 Building a Scalable & Continuously Available IBM M...Peter Broadhurst
This document provides an overview of designing a scalable and highly available IBM MQ infrastructure. Key points include:
- Using a client/server architecture with MQ deployed separately from applications provides flexibility and allows MQ to be treated as critical infrastructure similar to a database.
- Each sender should connect to two queue managers and each receiver should have two listeners concurrently attached to provide redundancy and no single point of failure.
- Other topics covered include synchronous request/response, publish/subscribe messaging, limitations for ordered messages, and integrating with IBM Integration Bus.
The document emphasizes an active/active design philosophy with minimum two queue managers and discusses workload management strategies for sending and receiving messages across multiple queue managers.
This document provides an overview of distributed systems, including definitions, important aspects, examples, characteristics, goals, architectures, and techniques for scaling distributed systems. A distributed system is defined as a collection of independent computers that appears as a single coherent system to users. Key goals of distributed systems are making resources accessible, hiding the distribution of resources from users, being open through standard interfaces, and being scalable to additional users and resources.
The document discusses the OSI reference model and TCP/IP reference model.
The OSI model has 7 layers - physical, data link, network, transport, session, presentation and application layer. Each layer performs a well-defined function with minimal information flow across layer boundaries.
The TCP/IP model has 4 layers - link, internet, transport and application. The internet layer uses IP to allow packets to independently travel across networks. Transport layer uses TCP for reliable connections and UDP for fast delivery. Application layer contains protocols like HTTP, FTP, SMTP.
1. Internet and Intranet Protocols and
Applications
Lecture 14
Introduction to MQSeries
And Asynchronous Messaging
May 1, 2002
Joseph Conron
Computer Science Department
New York University
jconron@cs.nyu.edu
2. What is MQSeries?
• A middleware product that implements a
messaging and queuing framework.
• Middleware - an intermediate software
component that bridges dissimilar computing
environments.
– Unix, MVS, OS/400 Tandem, VMS, NT, etc.
– SNA, NetBios, TCP/IP
– Cobol, C, JAVA
3. Messaging and Queueing
• Messaging - programs communicate by sending
data in messages rather than by calling each other
directly.
• Queuing - messages are put on queues in storage,
eliminating the need for programs to be logically
connected.
• A messaging and queuing framework is inherently
ASYNCHRONOUS!
4. Asynchronous vs. Synchronous
Communications
• Synchronous: App sends request, then blocks
until request is processed.
– Requires service available at EXACTLY same time as
client needs service.
• Asynchronous: App sends request and checks at
some future time if complete.
– Service need not be available when client sends request
5. Synchronous: good/bad
Good Bad
• Easy to program • Service must be up
• Outcome is known and ready
immediately • requestor blocks, held
• Error recovery easier resources are “tied up”
(usually) • Usually requires
• Better real-time connection-oriented
response (usually) protocol
6. Asynchronous: good/bad
Good Bad
• Requests need not be • Response times are
targeted to specific server. unpredictable
• Service need not be • error handling usually
available when request is more complex
made • Usually requires
• No blocking, so resources connection-oriented
could be freed protocol
• Could use connectionless • Harder to design apps?
protocol
7. Messaging vs. Procedure Calls
• As programmers, many of us think procedurally,
so using procedures is “natural” extension of how
we think.
• Messages are an abstract concept: harder for us to
conceptualize relationship between actions and
messages!
• But Wait!
– Something good happens when we use abstractions!
8. <Soap Box>
We are free to concentrate on the design of
the application itself.
We are no longer concerned with details of
the environment.
Our application is suddenly portable and to
some degree, extensible.
</Soap Box>
9. A Brief History of MQSeries
• 1992
– Systems Strategies (SSI) develops ezBridge, a messaging and
queuing product for VMS, Tandem, and Unix
– IBM announces Networking Blueprint defining three standard APIs
for program to program communication: CPI-C, RPC, MQI
• 1992-3
– State Street Bank (Boston) evaluates IBM messaging product
(code name “Victory”) for IBM CICS/ESA and SSI’s ezBridge on
VMS and Tandem.
“State Street Bank would like to announce the wedding of
IBM and Systems Strategies!”
• 1993
– IBM buys intellectual property rights for ezBridge from SSI
10. The Bride’s Wedding Preparation
(What SSI had to do)
• Implement IBM Channel Protocol over TCP/IP and LU6.2
(more about channels later).
• Implement the MQI interface functions (MQCONN,
MQOPEN, MQPUT, MQGET, MQCOMMIT,
MQCLOSE, MQDISC).
• Implement MQI Error Semantics (failure conditions
should look the same on all systems)
11. MQSeries/ezBridge Integration Objectives
• Applications written in C using ezBridge on VMS and
Tandem had to exchange messages with applications
written in (COBOL?) Using MQI under CICS/ESA.
• System intercommunication using channel protocol over
TCP/IP and LU6.2 (that is, A VMS system had to “look”
to IBM machine just like another IBM system!).
12. MQSeries Platform Rollout
• Initially, IBM’s version of MQSeries ran only on mainframe
– (CICS/ESA, IMS/ESA, and eventually VSE).
• SSI version (called MQSeries Version 1) initially released on:
– VMS, Tandem, AS/400, and Unix (SCO, UnixWare).
• 1994/1995 -IBM releases the first three “distributed” platforms:
– AIX, OS/2, and AS/400.
– The AIX version becomes the “reference port”.
• Over time, IBM replaced SSI versions with “ports” of its reference system.
• Today - MQSeries runs on over 35 platforms
13. How Messaging & Queuing Works
Programs communicate by putting
messages on queues. Here, program
A puts a message on Queue1, which
is read by program B.
Note: A and B need not be
on the same machine!
14. How Messaging & Queuing Works (2)
Communication can be one-
way or two-way. Here, A
sends to B on Queue1, and B
responds to A on Queue2
15. Messaging and Queuing Characteristics
• Three key facts about Messaging and Queuing
differentiate it from other communication styles:
1) Communicating programs can run at different times.
2) There are no constraints on application structure.
3) Programs are insulated from environmental differences.
• Let’s examine each of these characteristics in
more detail.
16. Applications Can Run at Different Times
Either program can
be unavailable
Key Concept:
message queue exists
independently from
programs that use them!
17. No Constraints on Application Structure
There can be a one to many Or a many to one
relationship between relationship between
applications applications
18. Applications Shielded from Environmental
Differences
• Don’t care what OS is used.
• Don’t care what language they’re written in
• Don’t care what the underlying
communication protocol is used.
19. Applications Shielded from Environmental
Differences
Applications
Programmatic
API
Queue Manager
Queue Manager
Message Queue Communications using
Message Channels
20. MQSeries Objects: Queue Manager
• Queue Manager
– Controls access to queues:
• administration (create, delete, etc)
• usage (Put, Get)
– serves as transaction (syncpoint) coordinator for all
queue operations.
– Accessed through the Message Queue Interface (MQI)
– Queue Managers have names (identities) that are
UNIQUE in a network (like host names).
21. MQSeries Objects: Queues
• MQSeries defines four types of queues. A queue instance
is fully qualified by its queue manager and queue name.
– Local Queue - an actual queue for which storage is allocated.
– Remote Queue - a definition of a queue on a different queue manager
(acts somewhat like a pointer)
– Alias Queue - another name for a local or remote queue. Typically used
to switch queue destinations without modifying program code.
– Model Queue - a template whose properties are copied when creating a
new dynamic local queue (“ create queue xxx “like” queue yyy).
22. MQSeries Queues: Properties
• Maximum Message Size
• Maximum Queue Depth
• High/Low Factors
• Enable/Disable Put or Get
• Persistent/Not Persistent
23. MQSeries Queues: Events and Triggering
• Local queues can generate events (messages)
under certain conditions (like queue full).
• These “event” messages can be used to “trigger”
the execution of a program.
• These events are called trigger messages. The
queue on which they are put is called an Initiation
Queue.
24. MQSeries Objects: Processes
• Process defines an application to an MQSeries queue
manager. A process definition object is used for defining
applications to be started by a trigger monitor.
• A trigger monitor is a program that listens on an
initiation queue and executes commands named in
Process definitions.
• Triggering is useful when you don’t want to deploy long-
running programs.
25. MQSeries Objects: Message Channels
• provide a communication path between two queue
managers on the same, or different, platforms.
• A message channel can transmit messages in one
direction only. If two-way communication is
required between two queue managers, two
message channels are required.
• Question: why make message channels
one-way?
26. MQSeries Objects: Message Channels(2)
• Types of message channels:
– Sender - initiates connection to Receiver
– Server - Accepts request to start from requester, then
becomes Sender
– Receiver - Passive; waits for initiation sequence form
Sender
– Requester - Active at start, then becomes Receiver
– Cluster-sender (used amongst Cluster Queue
Managers)
– Cluster-receiver (ditto)
27. MQSeries: Message Channel Concepts
• The Sender side of the session is the “transaction
coordinator”.
• Message channels implement a protocol that includes a
commitment protocol.
• Channels recover from failure by agreement: they must
agree on the last committed unit of work [would this be
harder if channels were bi-directional??]
• Message Chanels are implemented by programs called
Message Channel Agents (MCA)
28. How messages move across channels
(1) Application puts message (4) Message is available on
on transmission queue local queue for applications
(2) Sender MCA gets (3) Receiver MCA puts
message and sends to partner message on target queue
MCA
29. MQSeries: Assured Delivery
• If queues are persistent, and message is persistent,
then MCAs will eventually deliver the message to
the target queue, and target application will get it!
• MCAs have recoverable state - they’re
STATEFUL - and a connection-oriented protocol.
• Message is not removed from xmit queue until
partner MCA confirms placement on target queue
30. MQSeries Objects: Messages
• Messages consist of:
– Header (MQMD)
• Used by Queue Manager and application to
handling properties of the message
– User Data
• The application-to-application data (“payload”)
• transparent to MQSeries
31. MQSeries Messages: Properties
• Destination Queue
• Reply Queue name
• Time to live (expiry)
• Format
• Correlation ID
• Persistence
• “Report” options
32. MQSeries Messages: Properties (2)
• Messages can be individually designated
persistent or non-persistent (persistent messages
are logged to enable recovery)
• Correlation ID - select which message to get
from queue
• Segmented Messages - allows ending of VERY
LARGE messages (> 100 MB)
33. MQSeries Messages: message types
• Request - used by one program to ask another program for
something (usually data). A request message needs a reply.
• Reply - used in response to a request message.
• A one-way message, as you would expect, doesn’t need a
reply, though it can carry data.
• A report message is used when something unexpected
occurs, or to give extra information like:
– message delivered to target queue
– message taken by application
– message not deliverable
– message exceeded time-to-live
34. MQSeries Messages
Units of Work and Transactions
• Messages are added and removed from queues in
Units of Work
• The smallest Unit of Work is one message.
• Units of work are atomic.
• When an app reads a message from a queue, a
message “appears” to have been removed, but in
fact, it is still in storage until the app “commits”
the unit of work.
35. MQSeries: Transaction Support
Unit of recovery - a piece of work that changes data from one point of
consistency to another.
Syncpoint - A point of consistency (also called a or commit point). It
is a moment at which all the recoverable data that an application
program accesses is consistent.
36. MQSeries: Transaction Support (2)
• Applications are responsible for delimiting the
beginning and end of a transaction. How can
messaging be coordinated with a data base
update?
• MQSeries is XA compliant and can operate with
other XA compliant systems as either a transaction
manager (coordinator) or resource manager
(particpant).
Some examples: Sybase, DB2, Oracle.
37. MQSeries: Logging and Recovery
• All operations that affect the “state” of the Queue
Manager and its objects are logged to a log file.
• What is “state”?
• Object definitions (queue manager, queues,
processes, channels, etc)
• Queue content (messages)
• What about message channel state?
• Message channel states are logged separately by
each channel
38. MQSeries: Logging and Recovery (2)
• Two forms of Logging
– Circular – log records are written sequentially across
several files, then “wrap” back to the first file.
– Linear - log records are written sequentially across
files. New files are allocated as current files fill. No
automatic reuse of file space!
• Problem: Length (in time) of longest running
transaction vs amount of writes to log determines
size of log needed.
39. MQSeries: Logging and Recovery (3)
• Observations:
– Circular logging is easy to manage, but is fatal
if log is damaged (hard to backup circular
logs!).
– Linear logging is hard to maintain but provides
for archiving of previous logs (still a problem if
“current” log is damaged).
40. MQI: The MQSeries Programming
Interface
MQCONN Connect to queue manager
MQDISC Disconnect from queue manager
MQOPEN Open queue
MQCLOSE Close queue
MQPUT Put message
MQGET Get message
41. MQI: The MQSeries Programming
Interface (2)
MQPUT1 Put one message (implied open/put/close)
MQBEGIN Begin unit of work
MQCMIT Commit
MQBACK Back out
MQINQ Inquire about queue attributes
MQSET Set queue attributes
42. MQSeries: Language Support
• C
• C++
• Cobol
• JAVA (native and JMS)
• PL/I
• System 390 Assembler
• TAL (Tandem)
• Visual Basic
• For More Information:
http://www-4.ibm.com/software/ts/mqseries/