This document provides an overview of Jini network technology. It defines Jini as a technology that enables spontaneous assembly and interaction of services and devices on a network. It discusses key aspects of Jini including discovery, join and lookup protocols, leasing, remote events, distributed transactions, and JavaSpaces for distributed data. The document also outlines how Jini could help with a final year project on a collaborative UML editor by providing loose coupling, network-wide persistence, dynamic plug-ins, and distributed communication. It raises some performance issues with Jini/JavaSpaces and notes similarities between Jini and web services.
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ONS2015: http://bit.ly/ons2015sd
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Using Swarm, you can select “just enough app server” to support each of your microservices.
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Introduction to Puppet Enterprise 10/03/2018Puppet
Register today and learn more about Puppet Enterprise
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Jini+presentation
1. An Introduction of Jini
Technology
Presenter: Carfield Yim, Gary Lam
Date: 31-Jul-2002
How can JINI Technology Boost Our
Business
2. Outline
What is Jini?
What is the advantage of using Jini?
FYP Overview
How Jini help our final year project
Jini/Javaspace performance issue
Jini and WebService
Some Commercial Jini Products
Q & A
3. What is Jini?
Jini is a network technology that enables
spontaneous assembly and interaction of
services and devices on a network. [Adapted from
Jini Network Technology datasheet]
Provide reliable services in an unreliable
environment
This includes self-healing by leasing and
transaction support for partial failure
Code mobility which is implemented by notion
of Jini proxy
4. Jini's Infrastructure
Discovery, Join and Lookup Protocol
Discovery - looking for a lookup service for registration or
request of a service.
Join – A joining process of a service. Discovery should be
performed beforehand. If joining process is succeed, a Jini
proxy will be uploaded to the lookup service.
Lookup – search a service to be used. This involves
locating and invoking the service. The matching is based
on Java type concept. The service is located by
downloading the Jini proxy of that service to the client.
6. Jini's Programming Model
Leasing
Lease grantor grants a period of time to the
grantee. If there is no renewal after the lease
expired, grantor will cancel the lease.
Remote Event
This is a distributed event environment.
Distributed Transaction
Implement the concept of Two-phase commit
protocol
7. JavaSpace
The Java version of tuple space, origin from
Linda project from Yale University
Provide a generic object broker for Jini service.
Thus, other than service distributed; data is
also distributed.
9. Advantage of using Jini
JavaSpace provide a total decoupling protocol
Jini leasing mechanism provide a network wide
Garbage Collection
Lookup and Discovery base on type but not
name
Remote event and Distributed transaction
simplify the distributed programming.
10. FYP Overview
Java
Internet-IDEF
Jini network technology
JavaSpaces
Tool Tool Tool Tool
Project
Resource
Management
Communication
Facility
Network Resource
Management Util
Startup Facility Tool
Administration
ToolProxy
Interface
API for JAR file
tools
API for
Remote Service Client
Application
Layer
Architecture
Component
Architecture
12. How Jini help our project
Javaspace help to prevent deadlock of server
model
JavaSpace provide a network wide persistence
support
Dynamic tool plug-in is facilitated by Jini's join ,
dicovery and lookup Protocol.
JavaSpace provides a loose-coupled
communication.
13. Jini/Javaspace Performance
Issue
A scientific Java-based tuplespaces
benchmark package available to test the
performance http://hea-www.harvard.edu/~mnoble/tonic/doc/
A benchmark result of Javaspace
http://sitar.anr.mcnc.org/JavaSpace_perf.html
14. Jini and WebService
Similar service base concept,
but one is base on XML and
one is base on Java