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From Thibaut Britz <thibaut.br...@trendiction.com>
Subject Re: [RELEASE] Apache Cassandra 1.0 released
Date Tue, 18 Oct 2011 12:25:03 GMT
Great news!

Especially the improved read performance and compactions are great!

Thanks,
Thibaut


On Tue, Oct 18, 2011 at 2:11 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> 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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