ANNOUNCEMENT: Availability of TelegraphCQ v0.2 (BETA release) -------------------------------------------------------------
The Telegraph Team at UC Berkeley is pleased to announce the immediate availability of TelegraphCQ v0.2 (a BETA release). TelegraphCQ is a system for processing long-running continuous queries over data streams. TelegraphCQ is implemented as a significant modification to the PostgreSQL open-source database system. Specifically, TelegraphCQ v0.2 is based on the PostregreSQL 7.3.2 code-base. For more information on the Telegraph project please visit: http://telegraph.cs.berkeley.edu To download TelegraphCQ and for more information, please visit: http://telegraph.cs.berkeley.edu/telegraphcq Here is the README.TelegraphCQ from the source distribution: ---------------------------------------------------------------------- This file contains information on TelegraphCQ 0.2 (a Beta releae). What's new (since TelegraphCQ 0.1) --------------------------------- - Better stability: Lots of bugs have been squashed - CSV Wrapper: An easy to use wrapper that accepts simple comma separated text as input and supports all PostgreSQL and user-defined types. There is now no need to write C code to develop a new wrapper if your data source produces textual data. - Pull Wrappers: If you want to pull (lookup) data from external sources (such as web pages) based on query predicates, you can use the new infrastructure for the Pull Wrapper. - Introspective Query Processing: The dynamic catalog is a new feature in TelegraphCQ. It lets users query three special purpose internal data streams to get a continuous view of how the TelegraphCQ system is behaving. - Applications: Included with this distribution are a few applications that we demonstrated at the ACM FCRC/SIGMOD 2003 Conference in San Diego. We have integrated data from CalTrans (California Department of Transportation), CHP (California Highway Patrol) and a local network interface (using the tcpdump utility). We have also included graphical visualizers that run some interesting queries over data streams from these sources. Request ------- If you are using TelegraphCQ for any project (research or otherwise), we'd like to know ! - If you are making any performance measurements of TelegraphCQ and are publishing it or disseminating it in some way, please do let us know. - We welcome bug fixes and code contributions of any kind. Please send all patches to [EMAIL PROTECTED] Caveat Emptor ------------- The current version of TelegraphCQ (0.2) is still a Beta release and is very much research code. We haven't optimized it for performance. Also, you will need to create a fresh database to use it as it will not work against an existing PostgreSQL database. You are free to use pgdump to export and then import your data from an existing PostgreSQL database. - Archived streams: Note that although TelegraphCQ 0.2 supports archived streams, we currently do not support access of historical data. This will be fixed in our next release. For more information -------------------- Getting Started: A TelegraphCQ Getting Started guide can be found in docs/TelegraphCQ/gettingstarted.html The Getting Started guide also has links to other information such as DDL/DML syntax, examples etc. Note that the documentation installed in your TelegraphCQ installation directory contains documentation for the new syntax changes (CREATE/ALTER/DROP STREAM, the WINDOW clause in DML) integrated into the existing PostgreSQL documentation. The Telegraph Project: http://telegraph.cs.berkeley.edu Supported Platforms ------------------- TelegraphCQ is supported on Linux x86 (various distributions including Red Hat Linux 8,9 and Debian) and MacOS X 10.2, the platforms on which it was developed. In addition, it has been minimally tested on the SPARC Solaris platform. In general, TelegraphCQ should run anywhere PostgreSQL runs. However, there are significant differences in how we use shared memory and synchronization primitives such as semaphores. This is likely to cause some hiccups on platforms where we have not tested it yet. We welcome patches that help in porting TelegraphCQ. Please send all comments (and patches) to [EMAIL PROTECTED] ---------------------------------------------------------------------- -- Pip-pip Sailesh http://www.cs.berkeley.edu/~sailesh ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
