19 08-22 introduction to activeMQ
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This document provides an introduction to Apache ActiveMQ. It discusses how ActiveMQ is a Java Message Service (JMS) and message-oriented middleware that provides asynchronous messaging. It supports cross-language clients and features high performance clustering of brokers for scalability and master-slave configurations for persistence and reliability. The document uses an example of sending a "Hello World" message to demonstrate basic usage of ActiveMQ.
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Slide 2: Monolith Vs Microservices
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Easy to ship
Fast development
Cons-
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It is microservices design pattern.
An API gateway is a service which is the entry point into the application from the outside world. It’s responsible for request routing, API composition, and other functions, such as authentication.
There are a lot of issues when client is talking to multiple components to get the job done. These include multiple proxies at client side, different logic to handle different calls, client needs to know the implementation details of server.
A much better approach is for a client to make a single request to what’s known as an API gateway. An API gateway is a service which is the single entry-point for API requests into an application. It’s similar to the Facade pattern from object-oriented design. Like a facade, an API gateway encapsulates the application’s internal architecture and provides an API to its clients. It might also have other responsibilities, such as authentication, monitoring, and rate limiting.
These are also termed as BFF - Backend For Frontend
Slide 4: API Gateway in Action
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A brief overview of the significance of API Gateways in microservices architecture by providing Kong as an example.
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Monolith:
Pros-
Simple to implement
Less integration test - easy to test
Easy to ship
Fast development
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Nightmare when it comes to managing the code
Difficult to enhance
Bigger artifacts
Hard to replace individual components like DB, Logger etc.
Microservices-
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Easy to manage
One reason to change
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Single responsibility
Cons-
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Hard to test - rich integration tests required
Heterogeneity in infrastructure
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It is microservices design pattern.
An API gateway is a service which is the entry point into the application from the outside world. It’s responsible for request routing, API composition, and other functions, such as authentication.
There are a lot of issues when client is talking to multiple components to get the job done. These include multiple proxies at client side, different logic to handle different calls, client needs to know the implementation details of server.
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These are also termed as BFF - Backend For Frontend
Slide 4: API Gateway in Action
It acts as a “backend for the frontend”. The clients do not know which services they are talking to. They communicate with a single interface - API Gateway. The gateway resolves the client requests and distributes them to respective services.
Slide 7: Kong Architecture
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- Common drivers for adopting microservices like agility, safety, and scalability.
- Guidelines for decomposing monolithic applications into microservices based on business capabilities and domain-driven design.
- Discussion of differences between microservices and service-oriented architecture (SOA).
- Ecosystem of tools involved in microservices including development frameworks, APIs, databases, containers, and service meshes.
- Common design patterns and anti-patterns when developing microservices.
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This document provides an overview of messaging approaches in Java, specifically focusing on JMS and AMQP. It discusses the motivations for messaging, common messaging patterns like point-to-point and publish-subscribe, and compares RPC approaches. The document then dives into details of the JMS API and architecture, common implementations like ActiveMQ, and how Spring supports JMS. It also covers the AMQP protocol and model, implementations like RabbitMQ, and how Spring supports AMQP. Key books on these topics are recommended.
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02 api gateway
This document discusses API gateways as a solution for challenges that arise in microservices architectures. It describes how a monolithic architecture can become complex as services grow quickly. In a microservices architecture, clients could communicate directly with each service but this introduces problems around endpoint management, multiple requests, and refactoring difficulties. An API gateway provides a single entry point, routes requests to appropriate services, and aggregates results to address these issues. It then demonstrates Netflix Zuul, an open source API gateway, and provides a demo of its use with Eureka service discovery and routing between hello and goodbye microservices.
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Introduction to Microservices
The document provides an overview of microservices architecture including:
- Definitions and characteristics of microservices such as componentization via services, decentralized governance, and infrastructure automation.
- Common drivers for adopting microservices like agility, safety, and scalability.
- Guidelines for decomposing monolithic applications into microservices based on business capabilities and domain-driven design.
- Discussion of differences between microservices and service-oriented architecture (SOA).
- Ecosystem of tools involved in microservices including development frameworks, APIs, databases, containers, and service meshes.
- Common design patterns and anti-patterns when developing microservices.
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Maven is a build tool that helps manage Java projects and automates common tasks like compiling code, running tests, and managing dependencies. It uses a Project Object Model (POM) XML file to store build configuration which defines project dependencies, plugins, and other metadata. Maven standardizes project layout, builds, documentation, and the release process.
Was ist angesagt? (20)
Easy enterprise application integration with RabbitMQ and AMQP
Easy enterprise application integration with RabbitMQ and AMQP
Decoupling your application using Symfony Messenger and events
Decoupling your application using Symfony Messenger and events
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4. Use another JMS endpoint and logger to receive and log messages from the queue
Mule esb
Mule ESB is a lightweight Java-based enterprise service bus (ESB) and integration platform that allows developers to connect applications together quickly and easily. It acts as a transit system for carrying data between applications within an enterprise or across the Internet. Mule ESB includes powerful capabilities such as supporting over 30 protocols, simplified POJO-based programming, multiple access points, and extensive out of the box data transformations. Key components of Mule include flows, message processors like transformers and routers, and messages which contain a header and payload.
Mule esb
Mule ESB is a lightweight Java-based enterprise service bus (ESB) and integration platform that allows developers to connect applications together quickly and easily. It acts as a transit system for carrying data between applications within an enterprise or across the Internet. Mule ESB includes powerful capabilities such as supporting over 30 protocols, simplified POJO-based programming, multiple access points, and extensive out of the box data transformations. A key advantage is that it allows different applications to communicate regardless of the technologies used.
IBM MQ V8 annd JMS 2.0
The document summarizes the key changes in JMS 2.0 compared to JMS 1.1, including a simplified API with JMSContext, JMSProducer, and JMSConsumer interfaces. It discusses the new messaging features like delivery delay and asynchronous send. It also covers updates to the Java EE specification and how JMS 2.0 leverages features in Java 7 like try-with-resources for auto-closing resources. The document is intended to provide an introduction to the new features and gauge adoption of JMS 2.0.
Jms
The document discusses Java Message Service (JMS), which allows Java programs to exchange messages. JMS uses three message exchange models: publish-subscribe messaging involving topics and multiple senders/receivers; point-to-point messaging using message queues with one sender and receiver; and request-reply messaging to send and receive related messages. A JMS provider implements the JMS interfaces and APIs to enable asynchronous, reliable messaging between distributed Java applications.
Jms queue
This document discusses JMS queues and provides an example of using a JMS queue with ActiveMQ. It describes JMS and the queue model, then provides steps to set up a Mule application that enqueues messages to an ActiveMQ queue using HTTP and receives messages from the queue using JMS. The example shows importing ActiveMQ libraries, creating an ActiveMQ connector, adding messages to the queue from HTTP and receiving them from the queue using JMS.
MOM - Message Oriented Middleware
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.
JMS
The document discusses Java Message Service (JMS) API which allows applications to asynchronously communicate by creating, sending, receiving and reading messages. It describes JMS architecture including administered objects like connection factories and destinations that clients look up, connections to providers, sessions for producing and consuming messages, and message producers and consumers. It also covers point-to-point and publish/subscribe messaging domains and how messages can be consumed synchronously or asynchronously.
Mule
Mule ESB is a lightweight Java-based integration platform that allows different applications to communicate with each other by acting as a transit system for carrying data between applications. It supports over 30 protocols and technologies and includes powerful capabilities like acting as a single point of access, transaction manager, and security manager. Mule ESB uses flows to process messages where each message passes through a sequence of message processors like transformers, filters, routers, and components. Key elements of Mule messages include properties, variables, payload, and attachments.
Mule jms queues
These slides explain Jms implementation and its working can be understood easily using the examples that contain graphical flows and descriptions.
Cloud 2010
The document proposes an architecture for a mashup container to execute mashups in virtualized environments according to the Platform as a Service (PaaS) model. It describes a monolithic solution where a single virtual machine runs a complete service execution platform (SEP) to execute mashup sessions with negligible performance degradation. Fault tolerance is provided by replicating the SEP virtual machine using the hypervisor-based fault tolerance mechanism of virtualized environments. Testing showed this approach enabled zero-downtime failover with only a small increase in latency and resource usage.
WSO2 Product Release Webinar Introducing the WSO2 Message Broker
WSO2 held a webinar about releasing version 2.1.0 of their Message Broker product. The webinar covered messaging and scalable messaging systems, distributed message brokers and WSO2 MB's architecture using a distributed publish/subscribe and queues architecture. It also provided an overview of how WSO2 MB implements distributed queues and publish/subscribe using Apache Cassandra for scalable storage and Apache Zookeeper for coordination. Finally, it discussed integrating WSO2 MB with other WSO2 products and provided a user story example.
Java Messaging Services
Java Messaging Service (JMS) is a Java API that allows applications to asynchronously send and receive messages. It supports both point-to-point and publish-subscribe messaging models. A JMS application consists of JMS clients that produce and consume messages and administered objects like destinations and connection factories that are configured by an administrator.
Red book mq
MQSeries is IBM's middleware for messaging and queuing that allows programs to communicate asynchronously through message queues. It provides a consistent messaging interface that works across platforms. The queue manager is the core component that manages queues and messages, allowing programs to communicate without being aware of each other's locations. It handles message transport, segmentation, grouping and ensures reliable delivery. MQSeries supports clustering of queue managers to distribute workload and provide high availability.
Ähnlich wie 19 08-22 introduction to activeMQ (20)
WSO2 Product Release Webinar Introducing the WSO2 Message Broker
WSO2 Product Release Webinar Introducing the WSO2 Message Broker
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The conversations on Facebook from the Herringswell Manor School group from 2009 to the first half of 2024
UR BHATTI ACADEMY AND ONLINE COURSES.pdf
UR BHatti Academy dedicated to providing the finest IT courses training in the world. Under the guidance of experienced trainer Usman Rasheed Bhatti, we have established ourselves as a professional online training firm offering unparalleled courses in Pakistan. Our academy is a trailblazer in Dijkot, being the first institute to officially provide training to all students at their preferred schedules, led by real-world industry professionals and Google certified staff.
快速办理(worcester毕业证书)伍斯特大学毕业证PDF成绩单一模一样
学校原件一模一样【微信：741003700 】《(worcester毕业证书)伍斯特大学毕业证PDF成绩单》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
一比一原版(AU毕业证)英国阿伯丁大学毕业证如何办理
AU毕业证文凭证书【微信95270640】《英国阿伯丁大学毕业证书原版制作AU成绩单》【Q微信95270640】《仿制AU毕业证成绩单英国阿伯丁大学学位证书pdf电子图》，A.为什么留学生需要操作留信认证?
留信认证全称全国留学生信息服务网认证,隶属于北京中科院。①留信认证门槛条件更低,费用更美丽,并且包过,完单周期短,效率高②留信认证虽然不能去国企,但是一般的公司都没有问题,因为国内很多公司连基本的留学生学历认证都不了解。这对于留学生来说,这就比自己光拿一个证书更有说服力,因为留学学历可以在留信网站上进行查询!
B.为什么我们提供的毕业证成绩单具有使用价值？
查询留服认证是国内鉴别留学生海外学历的唯一途径，但认证只是个体行为，不是所有留学生都操作，所以没有办理认证的留学生的学历在国内也是查询不到的，他们也仅仅只有一张文凭。所以这时候我们提供的和学校颁发的一模一样的毕业证成绩单，就有了使用价值。
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二：真实使馆认证（留学人员回国证明）使馆存档
三：真实教育部认证教育部存档教育部留服网站可查
四：留信认证留学生信息网站可查
五：与学校颁发的相关证件1:1纸质尺寸制定（定期向各大院校毕业生购买最新版本毕,业证成绩单保证您拿到的是鲁昂大学内部最新版本毕业证成绩单微信95270640）
A.为什么留学生需要操作留信认证?
留信认证全称全国留学生信息服务网认证,隶属于北京中科院。①留信认证门槛条件更低,费用更美丽,并且包过,完单周期短,效率高②留信认证虽然不能去国企,但是一般的公司都没有问题,因为国内很多公司连基本的留学生学历认证都不了解。这对于留学生来说,这就比自己光拿一个证书更有说服力,因为留学学历可以在留信网站上进行查询!
B.为什么我们提供的毕业证成绩单具有使用价值？
查询留服认证是国内鉴别留学生海外学历的唯一途径但认证只是个体行为不是所有留学生都操作所以没有办理认证的留学生的学历在国内也是查询不到的他们也仅仅只有一张文凭。所以这时候我们提供的和学校颁发的一模一样的毕业证成绩单就有了使用价值。却也灵机一动立马仰起头双手拢在嘴边朝楼上大喊：“爸爸爸——有人找——那人一听朝山娃尴尬地笑笑悻悻地走了山娃立马“嘭的一声将铁门锁死心却咚咚地乱跳当山娃跟父亲说起这事时父亲很吃惊抚摸着山娃的头说还好醒得及时要不家早被人掏空了到时连电视也没得看啰不过父亲还是夸山娃能临危不乱随机应变有胆有谋山娃笑笑说那都是书上学的看童话和小说时学的不管如何父亲再也不许山娃敞开门坐到门口了父亲递给山娃钥匙说一出门就将门山
STUDY ON THE DEVELOPMENT STRATEGY OF HUZHOU TOURISM
ABSTRACT: Huzhou has rich tourism resources, as early as a considerable development since the reform and
opening up, especially in recent years, Huzhou tourism has ushered in a new period of development
opportunities. At present, Huzhou tourism has become one of the most characteristic tourist cities on the East
China tourism line. With the development of Huzhou City, the tourism industry has been further improved, and
the tourism degree of the whole city has further increased the transformation and upgrading of the tourism
industry. However, the development of tourism in Huzhou City still lags far behind the tourism development of
major cities in East China. This round of research mainly analyzes the current development of tourism in
Huzhou City, on the basis of analyzing the specific situation, pointed out that the current development of
Huzhou tourism problems, and then analyzes these problems one by one, and put forward some specific
solutions, so as to promote the further rapid development of tourism in Huzhou City.
KEYWORDS:Huzhou; Travel; Development
Factors affecting undergraduate students’ motivation at a university in Tra Vinh
ABSTRACT: Motivation plays an important role in foreign language learning process. This study aimed to
investigate student’s motivation patterns towards English language learning at a University in Tra Vinh, and factors
affecting their motivation change toward English language learning of non-English-major students in the semester.
The researcher used semi-structured interview at the first phase of choosing the participants and writing reflection
through the instrument called “My English Learning Motivation History” adapted from Sawyer (2007) to collect
qualitative data within 15 weeks. The participants consisted of nine first year non-English-major students who learning
General English at pre-intermediate level. They were chosen and divided into three groups of three members each
(high motivation group; average motivation group; and low motivation group). The results of the present study
identified six visual motivation patterns of three groups of students with different motivation fluctuation, through the
use of cluster analysis. The study also indicated a diversity of factors affecting students’ motivation involving internal
factors as influencing factors (cognitive, psychology, and emotion) and external factors as social factors (instructor,
peers, family, and learning environment) during English language learning in a period of 15 weeks. The findings of
the study helped teacher understand relationship of motivation change and its influential factors. Furthermore, the
findings also inspired next research about motivation development in learning English process.
KEY WORDS: language learning motivation, motivation change, motivation patterns, influential factors, students’
motivation.
原版制作(Hull毕业证书)赫尔大学毕业证Offer一模一样
学校原件一模一样【微信：741003700 】《(Hull毕业证书)赫尔大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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The Impact of Work Stress and Digital Literacy on Employee Performance at PT ...
ABSTRACT :This research aims to analyze the correlation between employee work stress and digital literacy
with employee performance at PT Telkom Akses Area Cirebon, both concurrently and partially. Employing a
quantitative approach, the study's objectives are descriptive and causal, adopting a positivist paradigm with a
deductive approach to theory development and a survey research strategy. Findings reveal that work stress
negatively and significantly impacts employee performance, while digital literacy positively and significantly
affects it. Simultaneously, work stress and digital literacy have a positive and significant influence on employee
performance. It is anticipated that company management will devise workload management strategies to
alleviate work stress and assess the implementation of more efficient digital technology to enhance employee
performance.
KEYWORDS -digital literacy, employee performance,job stress, multiple regression analysis, workload
management
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Kürzlich hochgeladen (10)
STUDY ON THE DEVELOPMENT STRATEGY OF HUZHOU TOURISM
STUDY ON THE DEVELOPMENT STRATEGY OF HUZHOU TOURISM
Factors affecting undergraduate students’ motivation at a university in Tra Vinh
Factors affecting undergraduate students’ motivation at a university in Tra Vinh
The Impact of Work Stress and Digital Literacy on Employee Performance at PT ...
The Impact of Work Stress and Digital Literacy on Employee Performance at PT ...
19 08-22 introduction to activeMQ
- 1. Introduction to Apache ActiveMQ 08. 22. 2019 Wooyoung Choi wychoi@redwood.snu.ac.kr Real-Time Operating Systems Laboratory, Seoul National University
- 2. 2 Contents I. Introduction II. Java Message Service (JMS) III. Message Oriented Middleware (MOM) IV. ActiveMQ V. Conclusion Introduction to Apache ActiveMQ
- 3. 3 The Goal of the Presentation To get a clear understanding of Apache ActiveMQ. ActiveMQ is ① Java Message Service (JMS) 1.1 compliant. • ActiveMQ is implemented with JMS. ② Message Oriented Middleware (MOM) product that provides asynchronous messaging. I. Introduction
- 4. 4 Motivation As a replacement for Remote Procedure Call (RPC). RPC-synchronous calls have a limited scalability. Backed up requests slow down the whole system. Solution : Use asynchronous call to increase scalability. To achieve high availability and scalability. The ability to continue functioning after failure of one or more servers. Solution : Migrate from one server to another using brokers in event of server failure. I. Introduction Client server RPC
- 5. 5 Contents I. Introduction II. Java Message Service (JMS) III. Message Oriented Middleware (MOM) IV. ActiveMQ V. Conclusion Introduction to Apache ActiveMQ
- 6. 6 Overview What is Java Message Service (JMS)? JMS is a Message Oriented Middleware (MOM). Loosely coupled communication. Asynchronous messaging. Reliable delivery which means high availability. II. Java Message Service (JMS) JMS Interface
- 7. 7 Goals of JMS When to use JMS? When the provider do not want the components to depend on other components’ interfaces. When the provider wants the application to run whether all components are running or not. When the provider wants a component to operate without receiving an immediate response. II. Java Message Service (JMS)
- 8. 8 JMS Messaging Models (1) Point to Point Each message has only one receiver. Message is sent to a queue. There is no dependency between producer and receiver. • Producer and receiver are independent to each other. Publish-Subscribe II. Java Message Service (JMS)
- 9. 9 JMS Messaging Models (2) Point to Point Publish-Subscribe Each message can have multiple receivers. Messages are sent to Topic. It is used when multiple receivers need to receive the same messages. II. Java Message Service (JMS)
- 10. 10 JMS Provider: ActiveMQ II. Java Message Service (JMS) Java Message Service (JMS) lets user to send messages from one program to another. However, it doesn’t use direct connection. Instead the message is sent to a JMS provider, such as ActiveMQ, and put there in a queue. Summary: ActiveMQ is a JMS provider and it is implemented with JMS.
- 11. 11 Contents I. Introduction II. Java Message Service (JMS) III. Message Oriented Middleware (MOM) IV. ActiveMQ V. Conclusion Introduction to Apache ActiveMQ
- 12. 12 Overview Definition The layer, which allows programs to communicate by sending and receiving messages. Objective Message Oriented Middleware allows programmers to integrate many heterogeneous components for software systems. III. Message Oriented Middleware (MOM)
- 13. 13 Features of MOM: Message Queue MOM is implemented as a form of Message Queue. Message Queue’s features are Scalability ① Broker clusters ② Multiple destinations for a publishers or subscribers. Availability ① Broker clusters ② Master/Slave Performance ① Memory resource management III. Message Oriented Middleware (MOM)
- 14. 14 Contents I. Introduction II. Java Message Service (JMS) III. Message Oriented Middleware (MOM) IV. ActiveMQ V. Conclusion Introduction to Apache ActiveMQ
- 15. 15 Overview What is ActiveMQ? Message Oriented Middleware (MOM) • The layer that allows software components to interact with one other. ActiveMQ is the most popular open source messaging and JMS provider developed by Apache. IV. ActiveMQ JMS Compliant
- 16. 16 Features Supports a variety of Cross Language Clients from Java, C, C++, C#, Python, PHP. Designed for high performance clustering. Network of brokers Supports very fast and stable persistence Master/Slave IV. ActiveMQ
- 17. 17 Clustered Brokers improve scalability Networks of Brokers It creates a cluster composed of multiple ActiveMQ instances. It allows brokers to communicate each other. Consequence : It improves scalability. IV. ActiveMQ
- 18. 18 Master/Slave improves persistence (1) Shared-Nothing Master/Slave structure Master and Slave have their own message storage. Slave is connected to the master broker. All message commands are replicated from the master. Slave broker takes over Master broker’s task when Master broker falls down. IV. ActiveMQ
- 19. 19 Master/Slave improves persistence (2) Shared-Storage Master/Slave structure Allows many brokers to share the storage mechanism. Only one broker can be live at any given time. Master has a file lock and another slave takes over the lock when the master falls down. IV. ActiveMQ
- 20. 20 Hello World Example using ActiveMQ (1) 1. Connect Producer to broker URL (tcp://localhost:61616). 2. Send a small text message saying “Hello World”. 3. The text message is enqueued in broker URL. 4. Connect Receiver to broker URL (tcp://localhost:61616). 5. Receiver receives the text message from the queue at broker URL. 6. The message is dequeued. IV. ActiveMQ
- 21. 21 Hello World Example using ActiveMQ (2) 1. Connect Producer to broker URL (tcp://localhost:61616). 2. Send a small text message saying “Hello World”. IV. ActiveMQ ① ②
- 22. 22 Hello World Example using ActiveMQ (3) 3. The text message is enqueued in broker URL. IV. ActiveMQ ③
- 23. 23 Hello World Example using ActiveMQ (4) 4. Connect Receiver to broker URL (tcp://localhost:61616). 5. Receiver receives the text message from the queue at broker URL. IV. ActiveMQ ④ ⑤
- 24. 24 Hello World Example using ActiveMQ (5) 6. The message is dequeued. IV. ActiveMQ ⑥
- 25. 25 Contents I. Introduction II. Java Message Service (JMS) III. Message Oriented Middleware (MOM) IV. ActiveMQ V. Conclusion Introduction to Apache ActiveMQ
- 26. 26 Summary Apache ActiveMQ is Java Message Service provider Message Oriented Middleware with high scalability and reliability Clustered Brokers Improve scalability. Guarantee availability. Master/Slave Brokers Guarantee fast and stable persistence when one falls down. V. Conclusion