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MongoDB’s Reliability Questioned

by Jonathan Allen on  Nov 07, 2011 7

Recently there have been two fairly high profile field reports on MongoDB that show it in a very unfavorable light. The majority of the criticism centers on a combination of performance problems and data loss.

Interview: Richard Hipp on UnQL, a New Query Language for Document Databases

by Abel Avram on  Aug 04, 2011 1

This interview with Richard Hipp, creator of SQLite, unveils the details of UnQL, a new query language for JSON document databases. Hipp mentions UnQLite, an embedded document database he plans to create.

NoSQL, NewSQL and Beyond

by Jean-Jacques Dubray on  Apr 19, 2011 7

The 451 Group has published earlier this month the conclusions of a report detailing the growing set of options in the information management space. In the process they also clarified what they meant by "NewSQL".

MongoDB 1.8 Improves Reliability with Journaling

by David Cooksey on  Mar 25, 2011

MongoDB's new journaling feature improves reliability with write-ahead redo logs. Log entries are written before permanent storage is updated. When a server restarts after a crash outstanding journal files will be replayed before the server goes online. Other changes include sharding performance boosts, shell tab completion, and the addition of covering and sparse indexes.

Couchbase Announces Couchbase Server and an Advisory Board

by Abel Avram on  Mar 16, 2011

Couchbase, the company recently formed by merging Membase and CouchOne, has announced the availability of Couchbase Server in addition to Membase Server and Mobile Couchbase, along with the Advisory Board Members.

NoSQL Shake-Up. Membase and CouchOne merge into Couchbase

by Michael Hunger on  Feb 10, 2011

The shape of the NoSQL landscape is changing. The first big market aggregation took place with the merger of Membase Inc. with CouchOne into Couchbase. InfoQ spoke with James Phillip and Damien Katz about the benefits of the merger and future products.

JasperSoft 4 Released with Big Data Support

by Ron Bodkin on  Jan 28, 2011

JasperSoft announces reporting support for Hadoop and leading NoSQL databases.

Foursquare's MongoDB Outage

by Ron Bodkin on  Oct 15, 2010 9

Foursquare recently suffered a total site outage for eleven hours. The outage was caused by unexpected uneven growth in their MongoDB database that their monitoring didn't detect. The system outage was prolonged when an attempt to add a partition didn't work due to fragmentation, and required taking the database offline to compact it. Learn what happened and what responses are planned.

Four NoSQL Add-ons available for Heroku Users

by Michael Hunger on  Aug 24, 2010

The first four NoSQL datastores are available as Add-ons for the Heroku PaaS (platform-as-a-service) platform. Using the Add-on system that was introduced in October 2009, CouchDB from Cloudant, Membase from NorthScale, MongoDB from MongoHQ and Redis were made available for Heroku users.

CouchDB Comes to Android

by Abel Avram on  Aug 18, 2010

Couchio, the company founded by Damien Katz, creator of CouchDB, has announced the release of CouchDB SDK for Android, a mobile version of the document database that can be used offline.

RubyConf China: NoSQL, Rails, and Matz on Ruby 2.0

by Xuefeng Ding on  Jul 04, 2010

The 2nd annual RubyConf China, this year in Shanghai, China, featured Ruby creator Matz who talked about Ruby Community and Ruby 2.0. InfoQ takes a look at the other talks and what tools and databases Ruby developers in and around China use.

Presentation: CouchDB and Me

by Werner Schuster on  Feb 03, 2009 9

In this talk from RubyFringe, Damien Katz explains what drove him to create CouchDB, why he chose Erlang, how it ended up as an Apache project and much more.

Interview: Damien Katz Relaxing on CouchDB

by Abel Avram on  Nov 25, 2008 2

In this interview, Damien Katz talks about CouchDB, a distributed, fault tolerant, document oriented database developed by Apache Incubator. CouchDB is written in Erlang, and the database is accessed through an HTTP/JSON API. The database view engine is run on JavaScript, but other languages have been used like Ruby and Python.

Martin Fowler Sees a Thaw in Frozen Thinking about Data Storage

by Abel Avram on  Nov 25, 2008 15

In a recent blog post, Martin Fowler, a renowned software thought leader, observed at last week's QCon that the deep freeze in thinking about databases in application architectures is thawing. The world has been stuck using RDBMS databases for every application use case, but the time has come to also consider RISC RDBMS or distributed document-oriented databases.

The RDBMS is not enough.

by Sebastien Auvray on  Nov 26, 2007 10

In a world of services, RDBMS are not the solution to every problem. Document Oriented Distributed Databases try to solve this and add a new way of storing documents. CouchDB (written in Erlang) is in its alpha stage and evolving on a regular basis. InfoQ caught up with Anthony Eden who is implementing the same concept in Ruby with RDDB.

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