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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: [RELEASE] Apache Cassandra 1.0 released
Date Tue, 18 Oct 2011 12:11:18 GMT
Thanks for the help, everyone!  This is a great milestone for Cassandra.

On Tue, Oct 18, 2011 at 7:01 AM, Sylvain Lebresne <sylvain@datastax.com> wrote:
> The Cassandra team is very pleased to announce the release of Apache Cassandra
> version 1.0.0. Cassandra 1.0.0 is a new major release that build upon the
> awesomeness of previous versions and adds numerous improvements[1,2], amongst
> which:
>  - Compression of on-disk data files (SSTables), with checksummed blocks to
>    protect against bitrot[4].
>  - Improvements to memory management through off-heap caches, arena
>    allocation and automatic self-tuning, for less GC pauses and more
>    predictable performances[5].
>  - Better disk-space management: better control of the space taken by commit
>    logs and immediate deletion of obsolete data files.
>  - New optional leveled compaction strategy with more predictable performance
>    and fixed sstable size[6].
>  - Improved hinted handoffs, leading to less need for read repair for
>    better read performances.
>  - Lots of improvements to performance[7], CQL, repair, easier operation,
>    etc[8]...
>
> And as is the rule for some time now, rolling upgrades from previous versions
> are supported, so there is nothing stopping you to get all those goodies right
> now!
>
> Both source and binary distributions of Cassandra 1.0.0 can be downloaded at:
>
>  http://cassandra.apache.org/download/
>
> Or you can use the debian package available from the project APT repository[3]
> (you will need to use the 10x series).
>
> The download page also link to the CQL drivers that, from this release on, are
> maintained out of tree[9].
>
>
> That's all folks!
>
> [1]: http://goo.gl/t3qpw (CHANGES.txt)
> [2]: http://goo.gl/6t0qN (NEWS.txt)
> [3]: http://wiki.apache.org/cassandra/DebianPackaging
> [4]: http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-compression
> [5]: http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
> [6]: http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra
> [7]: http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-performance
> [8]: http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-windows-service-new-cql-clients-and-more
> [9]: http://acunu.com/blogs/eric-evans/cassandra-drivers-released/
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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