Terracotta Java-based Visualization Server Available
Clustering Java Aims to Increase Stability
Jul. 7, 2005 09:00 PM
Terracotta’s Naturally Clustered Java lets developers view applications as
if they were running in a single Virtual Machine (VM), and enables runtime
clustering capabilities that enhance application scalability and
availability, the San Francisco-based company says.
Clustering Java, using the Terracotta Virtualization Server
(TVS), increases the stability and fault tolerance of Java applications while simultaneously reducing ongoing development and operating costs.
TVS Eliminates long-standing tradeoffs developers have been forced to make
between availability and performance in Java applications.
availability and performance come together in a “plug-configure-play”
infrastructure software package. This means that there are no code changes,
no APIs, and no altering of application semantics. TVS provides complete
data access visibility and control to development or operations staff at
runtime. Developers can use natural Java with no need to learn, use, or
maintain proprietary API’s.
TVS has two primary components that together
meet a diverse, but often concurrent, set of data access and consumption
needs; Distributed Shared Objects (DSO) and High-Availability-JDBC
DSO is a Terracotta Virtualization Server component that
provides the capability to share object state across Java Virtual Machines
(JVMs). DSO eliminates the need to maintain state in a transactional database, as well as the need to rely on inter-JVM communication mechanisms like JMS, RMI, Jcache, serialization, etc.
• Inter-VM object sharing on opt- in/opt-out basis
locking configurable at runtime
• Virtual heaps for multi-gigabyte object
• Scalable multi-level clustering infrastructure
• Distributed wait and notify
Shared data without database load or abuse
• Transparent recovery from
application instance failures
• Clustering as an API-free
• Reduced development, testing, and maintenance
• Faster application development and scaleout
operations performance visibility and control
HA-JDBC is an API-free
Terracotta Virtualization Servercomponent that
provides an intelligent two
level JDBC caching mechanism across Java
Virtual Machines (JVMs) in a
“share everything” mode. HA-JDBC
significantly reduces the need to touch
the database directly.
• Caching allows
read-through of DB queries, write-through for user
• Cache invalidation directly through our database
• Opt-in/Opt-out at query level
• “Pre-warmer”warms all caches in
• Cache Pinning returns current cache data when DB is
• High-performance data access
Decreased DB uptime dependence
• Fine-grain production-time visibility and
control over performance
of DB queries
• Reduced database
Specifications: The Terracotta Server is a pure Java solution that
should run on any platform that supportsJRE 1.4 or above and is supported on Sun’s HotSpot VM on Linux,SPARC Solaris,and Windows XP/WindowsServer 2003.The Terracotta Listener supports Oracle 9i for SPARC
Solaris,and Linux Kernel version 2.4 or higher.
It is available for downloading at:
Reader Feedback: Page 1 of 1
JDJ News Desk commented on 7 Jul 2005
Naturally Clustered Java lets developers view applications as if they were running in a single Virtual Machine (VM), Terracotta says, and enables runtime clustering capabilities that enhance application scalability and availability.
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