> On 20 Sep 2016, at 11:05, Jan Lehnardt <j...@apache.org> wrote: > > The Apache CouchDB development community is proud to announce the immediate > availability of version 2.0. > > See also the official Apache Press Release: > https://blogs.apache.org/foundation/entry/the_apache_software_foundation_announces99 > > CouchDB 2.0 is 99% API compatible > (http://docs.couchdb.org/en/master/whatsnew/2.0.html#upgrade-notes) with the > 1.x series and most applications should continue to just work. > > # Cluster > > CouchDB 2.0’s prime new feature is naive
*native, of course. *sweat* > support for clustering. It is based on the Dynamo paper > (http://www.allthingsdistributed.com/2007/10/amazons_dynamo.html) and the > work done at Cloudant and IBM in the BigCouch project which is now fully > merged into Apache CouchDB project. > > In short, clustering means that you can take a set of computers or virtual > machines in the same data center and make them behave like a single, unified > CouchDB instance. This has three benefits: > > 1. fault tolerance: data is stored on more than one computer. A CouchDB 2.0 > cluster obviates the need for custom setup of failover CouchDB instances. > > 2. performance: data is split up and only a part lives on each node in a > cluster. That means each node only has a fraction of the work to do (like > computing a view index) than a single node instance would have. > > 3. capacity: with setups of multiple computers storing data, and with data > being split among nodes, it is now possible to store amounts of data in > CouchDB that exceed the capacity of a single computer many many times, > setting CouchDB up for genuine Big Data solutions. > > You have full control over all parameters of the cluster to suit every > project’s needs. > Note: CouchDB 2.0 can also be configured as a “single node”-cluster, if none > of the above benefits are relevant to you. > > See the CouchDB 2.0 Architecture blog post > (https://blog.couchdb.org/2016/08/01/couchdb-2-0-architecture/) for more > information about the clustering technology. > > # Easy Queries > > The second major feature is the declarative query language “Mango”. Mango is > easier to use and faster in operation than the existing JavaScript-based > Views. Of course, JavaScript Views continue to work. > > See the Mango Query blog post > (https://blog.couchdb.org/2016/08/03/feature-mango-query/) for more > information about Mango. > > # New Admin Interface > > CouchDB 2.0 comes with a completely rewritten administration interface > (nickname “Fauxton”), built in React.js. It sports a modern look, advanced > features and a code-base that is easy to contribute to. > > See Fauxton, the new CouchDB Dashboard for more info. > > # Performance > > Both the replicator and compactor have undergone significant performance > improvements that will speed up replication between CouchDB instances as well > as PouchDB (https://pouchdb.com/) and Couchbase Lite instances. > > Compaction can now be run at any time, even continuously, with an > i/o-queueing system ensuring that live requests are not slowed down while > compaction is running. > > In addition: the compaction process is shorter, uses less CPU and RAM, > produces smaller database files and freshly compacted databases are > significantly faster to read from. > > See Feature: Replication (https://blog.couchdb.org/2016/08/15/) and Feature: > Compaction (https://blog.couchdb.org/2016/08/10/) for more info. > > # New Logo > > CouchDB 2.0 comes with a brand new Logo, designed by Constantin Angheloui. > The website, docs and other materials have been updated. See the CouchDB 2.0 > branding guide for details: > https://github.com/apache/couchdb-www/blob/asf-site/CouchDB-visual-identity/CouchDB-brand-book.pdf > > # More Details > > For more details, please refer to our 2.0 blog post series: > https://blog.couchdb.org/2016/08/23/check-out-the-road-to-couchdb-2-0-series/ > > # Download > > Apache CouchDB 2.0 downloads are available from the official website: > http://couchdb.apache.org/#download. > > # Acknowledgements > > The community would like to thank all contributors for their part in making > this release, from the smallest bug report or patch to major contributions in > code, design, or marketing, we couldn’t have done it without you! > -- Professional Support for Apache CouchDB: https://neighbourhood.ie/couchdb-support/