Download Presentation - Galiel 3.14 Ltd.

LiveDist:
Real-Time Distribution of
Databases, with High-Volume of
Updates
Dynamic and selective distribution
of a central or distributed database,
to a large number of clients,
in a changing topology.


Galiel-3.14 Ltd. has intellectual property rights relating to
implementations of the technology described in this presentation.
All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, or transmitted, in any
form, or by any means, electronic, mechanical, photocopying,
recording, or otherwise, without the prior written consent of the
publisher.
This presentation is provided “AS IS” without warranty of any
kind, either express of implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This presentation could include
technical inaccuracies or typographical errors. Changes are
periodically added to the information herein. These changes will
be incorporated in new editions of the presentation. Galiel-3.14
Ltd’ May make improvements and/or change in any technology,
product, or program described in this presentation at any time.
High Volume of Updates
and Large Number of Clients





Supports the distribution of thousands of SQL
database operations per second .
Each client defines a filter, and only database
operations on entities which are selected by the
filter, are sent to the client.
LiveDist can selectively distribute the information to
many thousands of clients,
with no degradation in performance.
Each client can change his filter as required .
For additional information please vist our site:
http://www.galiel314.com or
http://www.livedist.com
Clients can be:






Browsers (thin clients)
Applications, running on desktops or laptops
Cellular phones
Database server machines
External software systems
Any HTTP client
Distributed Databases






LiveDist supports the distribution of a database
among many sites.
There is no master site.
Each site defines filters for the entities it receives
from each connected site. A site can change its filters
as required.
All failures are automatically recovered.
LiveDist supports fast synchronization between sites,
which have been disconnected for a long time.
LiveDist supports fast synchronization between sites,
following topology changes.
Advanced Features



LiveDist distributes hierarchical objects
(mapped to relational database), instead of
just plain table rows.
LiveDist supports changes of database
structure on the fly (there is no need to stop
the system following a change in the
database structure).
LiveDist requires no administration.
Proven Technology

Used in large and critical systems, developed
by the Israeli Air Force and two major Israeli
defense conglomerates.
Platforms


The Java version of LiveDist currently
supports Oracle database engine.
The C# version of LiveDist supports
SQL-Server and Oracle.
Advantages over Database Replication





Clients of LiveDist are not required to be databases.
A client can display distributed data, as dynamically
refreshed graphical symbols, or as dynamically
refreshed tables in a browser, etc.
Database replication cannot handle a large number
of clients, while LiveDist can scale to support a
practically unlimited number of clients
Database replication requires sophisticated
administration, while LiveDist requires none.
Database replication systems require expensive
hardware, while LiveDist runs on low-cost machines.
Database replication performs poorly when new
database nodes are added and when filters are
changed.
Advantages over Messaging Systems with
Persistent Queues (Store & Forward)




Messaging systems cannot automatically handle
topology changes (especially when new clients join
the network).
Messaging systems cannot automatically handle
dynamic filter changes by the working clients.
In a messaging system, a persistent queue is
defined for each client (on a disk), causing linear
performance degradation when the number of
clients is increased.
Messaging systems require complicated
administration.