[confluence] MongoDB > 1.6 Release Notes

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1.6 Release Notes

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MongoDB 1.6 is a drop-in replacement for 1.4. To upgrade, simply shutdown {{mongod}} then restart with the new binaries.*

{redirect:http://docs.mongodb.org/manual/release-notes/1.6/}

{note}[MongoDB v1.8|DOCS:1.8 Release Notes] is now available.{note} \* _Please note that you should upgrade to the latest version of whichever driver you're using. Certain drivers, including the Ruby driver, will require the upgrade, and all the drivers will provide extra features for connecting to replica sets._ h4. Sharding [Sharding] is now production-ready, making MongoDB horizontally scalable, with no single point of failure. A single instance of _mongod_ can now be upgraded to a distributed cluster with zero downtime when the need arises. * [Sharding Tutorial|A Sample Configuration Session] * [Sharding Documentation|Sharding] * [Upgrading a Single Server to a Cluster|Upgrading from a Non-Sharded System] h4. Replica Sets [Replica sets|Replica Sets], which provide automated failover among a cluster of _n_ nodes, are also now available. Plese note that replica _pairs_ are now deprecated; we strongly recommend that replica pair users upgrade to replica sets. * [Replica Set Tutorial|Replica Set Tutorial] * [Replica Set Documentation|Replica Sets] * [Upgrading Existing Setups to Replica Sets|Upgrading to Replica Sets] h4. Other Improvements * The [w option|Replication] (and wtimeout) forces writes to be propagated to _n_ servers before returning success (this works especially well with replica sets) * [$or queries|http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-%24or] * Improved concurrency * [$slice operator|Retrieving a Subset of Fields] for returning subsets of arrays * 64 indexes per collection (formerly 40 indexes per collection) * 64-bit integers can now be represented in the shell using NumberLong * The [findAndModify command|findAndModify Command] now supports upserts. It also allows you to specify fields to return * $showDiskLoc option to see disk location of a document * Support for IPv6 and UNIX domain sockets h4. Installation * Windows service improvements * The C++ client is a separate tarball from the binaries h4. 1.6.x Release Notes * [1.6.5|http://groups.google.com/group/mongodb-user/browse_thread/thread/d3afd0082d391699] h4. 1.5.x Release Notes * [1.5.8|http://groups.google.com/group/mongodb-user/browse_thread/thread/b897c5d5037a4e19#] * [1.5.7|http://groups.google.com/group/mongodb-user/browse_thread/thread/398bf3e34456b3dd] * [1.5.6|http://groups.google.com/group/mongodb-user/browse_thread/thread/e25d0dd94fc7d1c4] * [1.5.5|http://groups.google.com/group/mongodb-user/browse_thread/thread/a0eef8f67bd30116] * [1.5.4|http://groups.google.com/group/mongodb-user/browse_thread/thread/dfcd15fc473fab57] * [1.5.3|http://groups.google.com/group/mongodb-user/browse_thread/thread/86c5102fd0b14d0c?hl=en] * [1.5.2|http://groups.google.com/group/mongodb-user/browse_thread/thread/f78104dc75627400] * [1.5.1|http://groups.google.com/group/mongodb-user/browse_thread/thread/ed204f4364527dd3] * [1.5.0|http://groups.google.com/group/mongodb-user/browse_thread/thread/5408497230c64f2d] You can see a full list of all changes on [Jira|http://jira.mongodb.org/secure/IssueNavigator.jspa?mode=hide&requestId=10107]. Thank you everyone for your support and suggestions!

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