1. JBoss State of the Union
Introduction to Professional Open Source methodology and to JBoss Inc.'s role
in leading the innovation of Open Source middleware development. Short
introduction to JBoss Inc. service offerings, current product roadmaps, JBoss
Enterprise Middleware System (JEMS), and the road ahead.
2. Overview of JEMS High Availability Services
Explore the JBoss AS platform, how it integrates different JEMS products, and
where high availability features should be considered for mission-critical
deployments. Get an architectural overview to which services benefit from
replication, load balancing, and failover and where JBoss AS utilizes JEMS
products such as JBoss Cache, JGroups and mod_jk.
3. Reliable Multicasting with JGroups
Introduction to JGroups group communication protocol. JGroups is the
underlying network level library utilized by most JEMS product to achieve high
availability. Learn what JGroups is and how to use the JGroups API. Explore the
concepts of JGroups channels, groups, views, events, and messages.
4. JGroups Protocols
Discover different protocol implementations for reliable network transport,
discovery, group membership, failure detection, message ordering, security, and
state transfer.
5. Protocol Stacks and Implementation
Explore the JGroups protocol stack architecture, how different protocols may
be assembled together, how they are implemented, and finally, how to add your
own protocol implementation into JGroups protocol stack.
6. JGroups Building Blocks and Troubleshooting
JGroups building blocks are higher-level implementations on top of JGroups
protocol stack that help you implement common tasks using JGroups library. Learn
the available default implementations, e.g. an RPC invocation implementation
across replicated objects using JGroups, and explore common issues to
troubleshoot when configuring and setting up your network for JGroups.
7. JBoss Cache Overview and API
Discover JBoss Cache architecture overview, features, and API. Learn how to
manage the tree structure of JBoss Cache, creating and removing nodes and
modifying data in the cache. JBoss Cache builds on the JGroups library and is a
key technology in implementing high availability services in JBoss AS.
8. Cache Loaders and Eviction Policies
Critically important to understanding how to manage the life cycle of cached
data with JBoss Cache. Learn how cache loaders mandate under what policies data
is moved from persistent stores into memory cache and how eviction policies
allow you to configure and manage the data while in the cache and decide under
what conditions data should be evicted back to your datastore.
9. Cache Replication, Transactions, and Isolation Levels
Get details on different usage scenarios with JBoss Cache and learn the
different replication modes with JBoss Cache - asynchronous and synchronous
replication - and the implication of replication mode to application
performance. Learn how to use transactional access to the JBoss Cache, how to
set different isolation levels for the cached data, and how the transaction and
isolation levels affect the locking performed by JBoss Cache.
10. JBoss Cache AOP Overview and API
Explore an advanced version of JBoss Cache that uses the JBoss AOP framework
for efficient implementation of data replication. See how the AOP version of
JBoss Cache differs in architecture, the changes in the cache API, and how JBoss
Cache AOP manages Java objects inserted into cache differently from JBoss Cache.
11. JBoss Cache AOP Implementation
Go into deeper detail on JBoss Cache implementation. See how JBoss AOP is
leveraged to dynamically introduce interceptors to cache objects, how we can
transparently keep track of the exact data changes in AOP Cache, how complex
Java objects are automatically mapped into AOP cache, the use of collections in
cached data sets, and more.
12. Web Tier Load Balancing and Failover
Move up one abstraction level and start looking at how high availability
features are implemented at the JBoss Middleware and J2EE component level. Start
with HTTP session replication and see how JBoss Cache is used to implement it.
Continue by looking at mod_jk features and how to implement load balancing, hot
standby, and domain clustering when combining Tomcat servlet container with
native web servers.
13. EJB Load Balancing and Failover
Explore EJB components, get a recap on the proxy architecture, and learn how
we can leverage services on top of JGroups to implement load balancing and
failover. Learn to customize and implement your own load balancing policies with
EJBs, and further explore the naming implementation used with EJBs and how it
implements high availability.
14. JEMS Clustered Services
Discover how to easily replicate service implementations (singletons) in a
clustered JBoss AS environment. Explore master-slave scenarios and how failover
works with clustered MBeans. Learn how to enable datasource failover with JBoss
AS and discover the implementation details behind HA-JNDI and HA-RMI.
15. JMS Failover and Load Balanced MDB
In this final section, build upon the HA singleton implementation and see how
the current JMS implementation in JBoss AS leverages the HA singleton framework
to build failover capabilities for JBoss MQ. Get a brief introduction to the
upcoming JBoss Messaging core and how it uses JGroups to build a peer network of
messaging servers.
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