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The MongoDB Database
d471957fc3
Two concurrent storage transactions can now create collections with the same collection name. These transactions will conflict at commit time; the first committer will win and register their collection into the global catalog. The losing transactions will bubble a WriteConflictException. Top-level callers that should fail if the collection already existed must now check and fail with a NamespaceExists error code. Previously, those callers could rely on lower level code returning the NamespaceExists error. Callers that were implicitly creating a collection may retry the operation, using the now-registered collection. These transaction-local collections (UncommittedCollections) are returned when doing any CollectionCatalog::lookup* call. |
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MongoDB README
Welcome to MongoDB!
COMPONENTS
mongod - The database server.
mongos - Sharding router.
mongo - The database shell (uses interactive javascript).
UTILITIES
mongodump - Create a binary dump of the contents of a database.
mongorestore - Restore data from the output created by mongodump.
mongoexport - Export the contents of a collection to JSON or CSV.
mongoimport - Import data from JSON, CSV or TSV.
mongofiles - Put, get and delete files from GridFS.
mongostat - Show the status of a running mongod/mongos.
bsondump - Convert BSON files into human-readable formats.
mongoreplay - Traffic capture and replay tool.
mongotop - Track time spent reading and writing data.
install_compass - Installs MongoDB Compass for your platform.
BUILDING
See docs/building.md.
RUNNING
For command line options invoke:
$ ./mongod --help
To run a single server database:
$ sudo mkdir -p /data/db
$ ./mongod
$
$ # The mongo javascript shell connects to localhost and test database by default:
$ ./mongo
> help
INSTALLING COMPASS
You can install compass using the install_compass script packaged with MongoDB:
$ ./install_compass
This will download the appropriate MongoDB Compass package for your platform
and install it.
DRIVERS
Client drivers for most programming languages are available at
https://docs.mongodb.com/manual/applications/drivers/. Use the shell
("mongo") for administrative tasks.
BUG REPORTS
See https://github.com/mongodb/mongo/wiki/Submit-Bug-Reports.
PACKAGING
Packages are created dynamically by the package.py script located in the
buildscripts directory. This will generate RPM and Debian packages.
DOCUMENTATION
https://docs.mongodb.com/manual/
CLOUD HOSTED MONGODB
https://www.mongodb.com/cloud/atlas
MAIL LISTS
https://groups.google.com/forum/#!forum/mongodb-user
A forum for technical questions about using MongoDB.
https://groups.google.com/forum/#!forum/mongodb-dev
A forum for technical questions about building and developing MongoDB.
LEARN MONGODB
https://university.mongodb.com/
LICENSE
MongoDB is free and the source is available. Versions released prior to
October 16, 2018 are published under the AGPL. All versions released after
October 16, 2018, including patch fixes for prior versions, are published
under the Server Side Public License (SSPL) v1. See individual files for
details.