Index

A note on the digital index

A link in an index entry is displayed as the section title in which that entry appears. Because some sections have multiple index markers, it is not unusual for an entry to have several links to the same section. Clicking on any link will take you directly to the place in the text in which the marker appears.

Symbols

32-bit integer type, Basic Data Types

64-bit floating point number type, Basic Data Types

64-bit integer type, Basic Data Types

$ (dollar sign) reserved character, Naming

in conditionals, Querying

key names and, Documents

in update modifiers, Using Modifiers

in update modifies

using to add, change, or remove key/value pairs, Getting started with the “$set” modifier

. (dot)

dot notation in queries for embedded keys, Querying on Embedded Documents
in namespaced subcollection names, Subcollections
key names and, Documents

(null character), Naming

" " (quotes, double), using in strings, Using Modifiers

' ' (quotes, single), using with strings, Using Modifiers

_ (underscore), key names starting with, Documents

A

addShard command, Adding a shard

$addToSet array modifier, Array modifiers

addUser( ) method, Authentication Basics

admin database, Databases

switching to, Stopping MongoDB
users as superusers, Authentication Basics

admin interface, Using the Admin Interface

administration, Simple Administration, Administration–Repair

authentication basics, Authentication Basics

backup and repair, Backup and Repair–Repair

repairing corrupted data files, Repair
slave backups, Slave Backups
using fsync and lock, fsync and Lock
using mongodump and mongorestore, mongodump and mongorestore

file-based configuration, File-Based Configuration

monitoring, Monitoring–Third-Party Plug-Ins

of replication, Administration

authentication, Replication with Authentication
changing oplog size, Changing the Oplog Size
diagnostics, Diagnostics

security and authentication, Security and Authentication–Other Security Considerations

how authentication works, How Authentication Works
other security considerations, Other Security Considerations

of sharding, Sharding Administration–Removing a shard

config collections, config Collections
printShardingStatus( ) function, Getting a summary
removeshard commands, Removing a shard

starting MongoDB from command line, Starting from the Command Line–Starting from the Command Line

stopping MongoDB, Stopping MongoDB

age-out (automatic), of data in capped collections, Properties and Use Cases

aggregation, Tons of Features…

aggregation tools, Aggregation–Getting more output

count( ) function, count

distinct command, distinct

finalizers, Using a Finalizer

function as grouping key, Using a Function as a Key

group command, group

MapReduce, MapReduce–Getting more output

categorizing web pages (example), Example 2: Categorizing Web Pages
finding all keys in collection (example), Example 1: Finding All Keys in a Collection–Example 1: Finding All Keys in a Collection
MongoDB and MapReduce, MongoDB and MapReduce

$all conditional, $all, Issues

allowLocal key, Adding a shard

analytics application (real-time), using Python, Real-Time Analytics: Python–Other Considerations

application examples, Example Applications–Other Considerations

custom submission forms, using Ruby driver, Custom Submission Forms: Ruby–Ruby Object Mappers and Using MongoDB with Rails

custom form submission, Custom Form Submission
installing Ruby driver, Installing the Ruby Driver
object mappers and MongoDB with Rails, Ruby Object Mappers and Using MongoDB with Rails
using Ruby driver, Using the Ruby Driver

news aggregator using PHP driver, News Aggregator: PHP–Voting

designing news aggregator, Designing the News Aggregator
installing PHP driver, Installing the PHP Driver
trees of comments, Trees of Comments
using PHP driver, Using the PHP Driver
voting, Voting

real-time analytics using Python driver, Real-Time Analytics: Python

handling a request, Handling a Request
installing PyMongo, Installing PyMongo
other considerations, Other Considerations
schema, Schema
using analytics data, Using Analytics Data
using PyMongo, Using PyMongo

search engine for chemicals, using Java driver, Chemical Search Engine: Java–Issues

coding in Java, Writing This in Java
installing Java driver, Installing the Java Driver
issues with, Issues
schema design, Schema Design
using Java driver, Using the Java Driver

arbiter nodes, Nodes in a Replica Set

arbiterOnly key, Nodes in a Replica Set

array modifiers, Array modifiers–Array modifiers

$ positional operator, Positional array modifications

$addToSet, Array modifiers

using with $each, Array modifiers

$ne, Array modifiers

$pop, Array modifiers

$pull, Array modifiers

$push, Array modifiers

positional array modifications, Positional array modifications

speed of, Modifier speed

array of ancestors tree, Trees of Comments

array type, Basic Data Types

ArrayList class (Java), Writing This in Java

arrays, Arrays

indexing of elements in MongoDB, Schema Design

querying, Querying Arrays–The $slice operator

$all conditional, $all
$size conditional, $size
$slice operator, The $slice operator

ascending sorts, Limits, Skips, and Sorts

authentication, Security and Authentication–How Authentication Works

basics of, Authentication Basics
how it works, How Authentication Works
replication with, Replication with Authentication

autosharding, Introduction to Sharding, Autosharding in MongoDB

(see also sharding)

B

background fsyncs, serverStatus

background option for building indexes, Changing Indexes

backups, Backup and Repair–Slave Backups

restores from, using mongorestore, mongodump and mongorestore
slave server, Slave Backups
using fsync and lock commands, fsync and Lock
using mongodump, mongodump and mongorestore

BasicDBObject class (Java), Using the Java Driver

batch inserts, Batch Insert

binary data type, Basic Data Types

binary files, storing (see GridFS)

blocking

during index creation, Changing Indexes
for replication, Blocking for Replication

boolean type, Basic Data Types

$box option, finding points within rectangle, Geospatial Indexing

BSON, BSON

bson gem and bson_ext gem, Installing the Ruby Driver

buildInfo command, Command Reference

C

capped collections, Capped Collections–Tailable Cursors

creating, Creating Capped Collections
natural sorting, Sorting Au Naturel
properties and use cases, Properties and Use Cases
tailable cursors, Tailable Cursors

case-sensitivity in MongoDB, Documents

$center option, finding points within a circle, Geospatial Indexing

characters

not allowed in database names, Databases
not allowed in keys, Documents

chunks, Autosharding in MongoDB

distribution over shards, Sharding an Existing Collection
information about, Chunks
splitting documents into (GridFS), Under the Hood

chunkSize key (GridFS), Under the Hood

client, shell as stand-alone MongoDB client, A MongoDB Client

$cmd collection, How Commands Work

code examples from this book, Using Code Examples

code type, Basic Data Types

collections, Getting Started, Collections

capped (see capped collections)
dropping all indexes on, Changing Indexes
enabling sharding on, Sharding Data
fetching collections with inconvenient names, Inconvenient collection names
fixed-size, Tons of Features…
fully qualified names (namespaces), Databases
grouped into databases by MongoDB, Databases
help for, Tips for Using the Shell
inserting documents into, Inserting and Saving Documents
MongoCollection, Using the PHP Driver
names of, and index name size, limiting for namespaces, Index Administration
naming, Naming
reasons for separate collections, Schema-Free
schema-free, Schema-Free
subcollections, Subcollections
system.indexes, Index Administration

collStats command, Command Reference

com.mongodb and com.mongodb.gridfs packages, Installing the Java Driver

com.mongodb.BasicDBObject class, Using the Java Driver

com.mongodb.Mongo class, Using the Java Driver

command line, starting MongoDB, Starting from the Command Line

command response, How Commands Work

commands (see database commands)

comparison operators, Query Conditionals

comparison order for types, Comparison order

compound geospatial indexes, Compound Geospatial Indexes

compound unique indexes, Compound Unique Indexes

condition, including for group command, group

conditionals, Query Conditionals–Rules for Conditionals

$not metaconditional, $not
in OR queries, OR Queries
rules for, Rules for Conditionals

config database, Databases

config servers, Setting Up Sharding

setting up multiple, A Robust Config
starting, Starting the Servers

configuration file, File-Based Configuration

connect( ) method, mongo: The Shell

Connection class (PyMongo), Using PyMongo

Connection class (Ruby), Using the Ruby Driver

connection pooling, Requests and Connections

connections, client requests and, Requests and Connections

convertToCapped command, Creating Capped Collections

count( ) function, count

create operations, MongoDB shell, Create

createCollection command, Creating Capped Collections

Ctrl-C to stop MongoDB, Stopping MongoDB

currentOp command, fsync and Lock

cursor.hasNext( ) method, Cursors

cursor.next( ) method, Cursors

cursors, Cursors–Cursor Internals

advanced query options, Advanced Query Options
avoiding large skips, Avoiding Large Skips–Finding a random document
client-side and database, Cursor Internals
death and cleanup of, Cursor Internals
getting consistent results, Getting Consistent Results
limits, skips, and sorts, Limits, Skips, and Sorts
tacking explain onto, Using explain and hint
tailable, Tailable Cursors

D

data directory, Getting and Starting MongoDB, Data File Backup

creating on Linux, Mac OS X, and Solaris, POSIX (Linux, Mac OS X, and Solaris) Install
creating on Windows, Windows Install

data files, Data Files

data model, document-oriented, A Rich Data Model

data processing, using slave servers, Using Slaves for Data Processing

data types, Data Types–Autogeneration of _id

arrays, Arrays
basic, Basic Data Types
changing key type with $set update modifier, Getting started with the “$set” modifier
comparison order, Comparison order
dates, Dates
embedded documents, Embedded Documents
_id and ObjectIds, _id and ObjectIds
numbers, Numbers
type-sensitivity in MongoDB, Documents
type-specific queries, Type-Specific Queries–The $slice operator
used by PHP driver, Using the PHP Driver
values in documents, Documents

database commands, Database Commands–Command Reference

how they work in MongoDB, How Commands Work
listing commands supported by MongoDB server, Command Reference
most frequently used MongoDB commands, Command Reference

database references (DBRefs), Database References–When Should DBRefs Be Used?

definition of DBRef, What Is a DBRef?
driver support for, Driver Support for DBRefs
example schema, Example Schema
when to use, When Should DBRefs Be Used?

databases

enabling sharding on, Sharding Data
help for database-level commands, Tips for Using the Shell
listing for shards, Databases
MongoDB, Using the PHP Driver
in MongoDB, Databases

dates

data types for, Dates
date type, Basic Data Types

db variable, A MongoDB Client

db.addUser( ) method, Authentication Basics

db.drop_collection( ) function, Remove Speed

db.eval( ) function, Server-Side Scripting

db.getCollection( ) function, Inconvenient collection names

db.listCommands( ) function, Command Reference

db.printReplicationInfo( ) function, Diagnostics

db.runCommand( ) function, Database Commands

db.version function, Inconvenient collection names

DBObject interface, Using the Java Driver

decrementing, using $inc update modifier, Incrementing and decrementing

deletes

all indexes on a collection, Changing Indexes
delete operations, MongoDB shell, Delete

descending sorts, Limits, Skips, and Sorts

diagnostic tools for replication, Diagnostics

dictionaries in Python, Using PyMongo

distinct command, distinct, Command Reference

listing unique filenames stored in GridFS, Under the Hood

document-oriented databases, A Rich Data Model

documents

in Java, Using the Java Driver
in MongoDB, Documents
in PHP, Using the PHP Driver
in Python, Using PyMongo
real-time analytics application using PyMongo, Schema
removing outdated, in analytics application, Other Considerations
in Ruby, gotchas with, Using the Ruby Driver

dot notation (.), querying for embedded keys, Querying on Embedded Documents

doubles, representing numbers in MongoDB, Numbers

drop command, How Commands Work, Command Reference

dropDatabase command, Command Reference

dropIndexes command, Changing Indexes, Command Reference

drop_collection( ) function, Remove Speed

duplicates

dropping when creating indexes, Dropping Duplicates
duplicate keys, not allowed in MongoDB, Documents

dynamic query optimizer (see query optimizer)

E

$each array modifier, Array modifiers

$elemMatch conditional, Querying on Embedded Documents

embedded document type, Basic Data Types

embedded documents, Embedded Documents

indexing keys in, Indexing Keys in Embedded Documents
querying on, Querying on Embedded Documents

emit function, Example 1: Finding All Keys in a Collection

encrypting traffic between clients and server, Other Security Considerations

errors

catching normal errors with safe operations, Catching “Normal” Errors
getLastError command, Updating Multiple Documents, Database Commands, Command Reference

escaping special characters, Using Modifiers

eval( ) function, db.eval

example applications (see application examples)

$exists conditional, null

explain tool, Using explain and hint–Using explain and hint

output from query using index on two keys, Using explain and hint
output from query with index on single key, Using explain and hint
output from simple query on database without indexes, Using explain and hint

extents, Namespaces and Extents

F

features in MongoDB, Tons of Features…

file storage, Tons of Features…

files, storing (see GridFS)

files_id keys, Under the Hood

finalizers, Using a Finalizer

passing finalize function to MapReduce, The finalize function

find( ) method, Create, Introduction to find

chaining limit( ) method to, Limits, Skips, and Sorts
chaining skip method to, Limits, Skips, and Sorts
geospatial queries, Geospatial Indexing
sorting returns, Limits, Skips, and Sorts
specifying keys to return, Specifying Which Keys to Return

findAndModify command, Returning Updated Documents–Returning Updated Documents, Command Reference

values for keys, Returning Updated Documents

findOne( ) method, Read

fire-and-forget functions, The Fastest Write This Side of Mississippi

fixed-size collections, Tons of Features…

floating-point numbers, Basic Data Types

representation of integers as doubles in MongoDB, Numbers

forEach loop, using cursor class in, Cursors

fs.chunks collection, Under the Hood

fs.files collection, Under the Hood

fsync command, fsync and Lock

functions

JavaScript, defining and calling, Running the Shell
printing JavaScript source code for, Tips for Using the Shell
using as keys, Using a Function as a Key

G

geoNear command, Geospatial Indexing

geospatial indexes, Geospatial Indexing–The Earth Is Not a 2D Plane

assumption of a flat plane, spherical earth and, The Earth Is Not a 2D Plane
compound, Compound Geospatial Indexes
values range, Geospatial Indexing

getLastError command, Updating Multiple Documents, Database Commands, Command Reference

Github, Windows install

gps key, Geospatial Indexing

GridFS, GridFS: Storing Files–Server-Side Scripting

file storage, GridFS: Storing Files
getting started with, using mongofiles, Getting Started with GridFS: mongofiles
how it works, Under the Hood
use of compound unique index, Compound Unique Indexes
working with, from MongoDB drivers, Working with GridFS from the MongoDB Drivers

group command, group

component keys, group
condition for documents to be processed, group
using a finalizer, Using a Finalizer
using function as key, Using a Function as a Key

$gt (greater than) conditional, Query Conditionals

$gte (greater than or equal to) conditional, Query Conditionals

H

handshake command, Replication State and the Local Database
hardware failures, The Fastest Write This Side of Mississippi
hashes in Ruby, Using the Ruby Driver
hasNext( ) method, Cursors
help command, Tips for Using the Shell
hint tool, Using explain and hint
HTTP admin interface, Getting and Starting MongoDB, Using the Admin Interface

I

_id keys, _id and ObjectIds

autogeneration of, Autogeneration of _id
DBRefs versus, When Should DBRefs Be Used?
GridFS, Under the Hood
unique indexes on, Unique Indexes

immortal function, Cursor Internals

importing data, using batch inserts, Batch Insert

$in conditional

type-specific queries, null
using in OR queries, OR Queries

$inc update modifier, Using Modifiers

incrementing a counter, MongoDB for Real-Time Analytics
incrementing and decrementing with, Incrementing and decrementing

indexes

administration of, Index Administration

adding, removing, and dropping all indexes, Changing Indexes

$all conditional and, Issues

for collections of documents in MongoDB, Schema-Free

compound geospatial indexes, Compound Geospatial Indexes

dropIndexes command, Command Reference

forcing Mongo to use indexes you want for a query, Using explain and hint

real-time analytics using PyMongo (example), Handling a Request

unique, Unique Indexes

compound unique indexes, Compound Unique Indexes
dropping duplicates, Dropping Duplicates

uniquely identifying, Uniquely Identifying Indexes

indexing, Tons of Features…, Indexing–The Earth Is Not a 2D Plane

on all keys in your query, Introduction to Indexing

arrays, selecting elements by index, Positional array modifications

chemical search engine using Java driver (example), Schema Design

creating compound index, Writing This in Java

disadvantage of indexes, Introduction to Indexing

geospatial, Geospatial Indexing–The Earth Is Not a 2D Plane

keys in embedded documents, Indexing Keys in Embedded Documents

on multiple keys, considering index direction, Introduction to Indexing

questions to consider when creating indexes, Scaling Indexes

scaling indexes, Scaling Indexes

on single key used in query, Introduction to Indexing

for sorts, Indexing for Sorts

using explain, Using explain and hint–Using explain and hint

using hint, Using explain and hint

insert( ) method, Create

inserts, Inserting and Saving Documents

batch inserts, Batch Insert
into capped collections, Properties and Use Cases
insert( ) method, Create
interleaved inserts/queries, Requests and Connections
internals and implications, Inserts: Internals and Implications
safe inserts for documents with duplicate value for unique key, Unique Indexes
safe operations, Safe Operations
upserts, Upserts

installation, MongoDB, Installing MongoDB–Installing from a Package Manager

choosing a version, Choosing a Version
POSIX install on Linux, Mac OS X, and Solaris, POSIX (Linux, Mac OS X, and Solaris) Install
Windows install, Windows Install

integers

32- and 64-bit, Basic Data Types
basic data types and, Basic Data Types
representation as floating-point numbers, Numbers

isMaster command, Command Reference

J

Java

documentation for Java driver and articles, Using the Java Driver
search engine for chemical compounds, Chemical Search Engine: Java–Issues

java.util.ArrayList, Writing This in Java

JavaScript

Date class, Dates

executing as part of query with $where clause, $where Queries

MongoDB shell, Running the Shell

server-side execution, disallowing, Other Security Considerations

server-side scripting, Server-Side Scripting–Database References

db.eval( ) function, db.eval
security and, Security
stored JavaScript, Stored JavaScript

stored, in MongoDB, Tons of Features…

JSON (JavaScript Object Notation), Basic Data Types

data types, Basic Data Types

K

$keyf key, Using a Function as a Key

key/value pairs

functions as keys, Using a Function as a Key
keys in MapReduce operations, MongoDB and MapReduce
in MongoDB documents, Documents
specifying keys to return with find method, Specifying Which Keys to Return

keys

removing with $unset update modifier, Getting started with the “$set” modifier
setting value with $set update modifier, Getting started with the “$set” modifier

kill command, Stopping MongoDB

L

latitude and longitude in geospatial indexing, Geospatial Indexing

length key (GridFS), Under the Hood

libraries (JavaScript), leveraging in MongoDB shell, Running the Shell

limits for query results, Limits, Skips, and Sorts

Linux

installing MongoDB, POSIX (Linux, Mac OS X, and Solaris) Install
installing PHP driver, Linux and Unix install

listCommands command, Command Reference, Command Reference

listDatabases command, Command Reference

local database, Databases, Replication State and the Local Database

user for slave and master server, Replication with Authentication

local.system.replset namespace, Initializing a Set

local.system.users namespace, Replication with Authentication

localhost, running shard on, Adding a shard

locking

fsync command, holding a lock, fsync and Lock
information about, serverStatus

logging

creating function for JavaScript code, Stored JavaScript
inspecting MongoDB log after installation, Starting from the Command Line
use of capped collections for, Properties and Use Cases

$lt (less than) conditional, Query Conditionals

M

Mac OS X

installing MongoDB, POSIX (Linux, Mac OS X, and Solaris) Install
installing PHP driver, Mac OS X Install

manual sharding, Introduction to Sharding

map collection, finding all documents in order by distance from a point, Geospatial Indexing

map step (MapReduce), MapReduce

getting all keys of all documents in collection, Example 1: Finding All Keys in a Collection

MapReduce, Tons of Features…, MapReduce–Getting more output

finalize function passed to, The finalize function

finding all keys in a collection, Example 1: Finding All Keys in a Collection

MapReduce function in MongoDB, Example 1: Finding All Keys in a Collection
metainformation in document returned, Example 1: Finding All Keys in a Collection

getting more output from, Getting more output

keeping output collections from, Keeping output collections

optional keys that can be passed to, MongoDB and MapReduce

running on subset of documents, MapReduce on a subset of documents

using scope with, Using a scope

master-slave replication, Master-Slave Replication–Adding and Removing Sources

adding and removing sources, Adding and Removing Sources
options, Options

Math.random function, Finding a random document

maximum value type, Basic Data Types

md5 key (GridFS), Under the Hood

memory management, …Without Sacrificing Speed

information on memory from serverStatus, serverStatus
keeping index in memory, Scaling Indexes

memory-mapped storage engine, Memory-Mapped Storage Engine

metadata for namespaces, Namespaces and Extents

minimum value type, Basic Data Types

modifiers, update (see update modifiers)

mongo (shell), mongo: The Shell–Shell Utilities, mongo: The Shell

(see also shell)
--nodb option, mongo: The Shell
utilities, Shell Utilities

Mongo class (Java), Using the Java Driver

mongo gem, installing, Installing the Ruby Driver

Mongo::Connection class (Ruby), Using the Ruby Driver

mongod executable

--master option, Master-Slave Replication

--replSet option, Initializing a Set

--rest option, Using the Admin Interface

running, Getting and Starting MongoDB

--slave option, Master-Slave Replication

startup options, Starting from the Command Line

--bindip, Other Security Considerations
--config, Starting from the Command Line
--dbpath, Starting from the Command Line, POSIX (Linux, Mac OS X, and Solaris) Install
--fork, Starting from the Command Line
--logpath, Starting from the Command Line
--nohttpinterface, Using the Admin Interface
--noscripting, Other Security Considerations
--oplogSize, The Oplog
--port, Starting from the Command Line, Using the Admin Interface
--repair, Repair

stopping, Getting and Starting MongoDB, Stopping MongoDB

mongod.exe, installation options, Windows Install

MongoDB

advantages offered by, Introduction–But Wait, That’s Not All…
data types, Data Types
getting and starting, Getting and Starting MongoDB
installing, Installing MongoDB–Installing from a Package Manager
shell, MongoDB Shell–Data Types

MongoDB Java Language Center, Using the Java Driver

mongodump utility, mongodump and mongorestore

mongofiles utility, Getting Started with GridFS: mongofiles

mongorestore utility, mongodump and mongorestore

mongos routing process, Autosharding in MongoDB, Setting Up Sharding

connecting to, Adding a shard
running multiple, Many mongos

mongostat utility, mongostat

monitoring, Monitoring–Third-Party Plug-Ins

server health and performance, using serverStatus, serverStatus
third-party plug-ins for, Third-Party Plug-Ins
using admin interface, Using the Admin Interface
using mongostat for serverStatus output, mongostat

N

namespaced subcollections, Subcollections

namespaces, Databases

and extents, Namespaces and Extents
for indexes, Index Administration

naming

collections, Naming
databases, Databases
indexes, Uniquely Identifying Indexes

natural sorts, Sorting Au Naturel

$ne (not equal) conditional, Query Conditionals

$near conditional, Geospatial Indexing

news aggregator using PHP (example), News Aggregator: PHP–Voting

next( ) method, using on cursor, Cursors

$nin (not in) conditional, OR Queries

nodes

master and slave (see master-slave replication)
types in replica sets, Nodes in a Replica Set

$not conditional, $not

null character (), Naming

null type, Basic Data Types

queries for, null

numbers, data types for, Numbers

O

object id type, Basic Data Types

ObjectIds, _id and ObjectIds–Autogeneration of _id

oplog, Properties and Use Cases, The Oplog

changing size of, Changing the Oplog Size
getting information about, Diagnostics

OR queries, OR Queries

org.bson.DBObject interface, Using the Java Driver

P

package manager, installing MongoDB from, Installing from a Package Manager

pagination

combining find, limit, and sort methods for, Limits, Skips, and Sorts
query results without skip, Paginating results without skip

partitioning, Introduction to Sharding

passive nodes, Nodes in a Replica Set

performance, …Without Sacrificing Speed

index creation and, Changing Indexes
indexes and, Introduction to Indexing
price of safe operations, Safe Operations
speed of update modifiers, Modifier speed

Perl

$ (dollar sign) in MongoDB update modifiers, Using Modifiers
Perl Compatible Regular Expression (PCRE) library, Regular Expressions

PHP

$ (dollar sign) in MongoDB update modifiers, Using Modifiers
news aggregator application (example), News Aggregator: PHP–Voting
using tailable cursor in, Tailable Cursors

PID (process identifier) for ObjectId-generating process, ObjectIds

ping command, Command Reference

plain queries, Advanced Query Options

point-in-time data snapshots, fsync and Lock

points

finding document in map collection by order of distance from, Geospatial Indexing
finding in a shape, Geospatial Indexing

$pop array modifier, Array modifiers

positional operator ($), Positional array modifications

POSIX install (MongoDB), POSIX (Linux, Mac OS X, and Solaris) Install

preallocation of data files, Data Files

primary, Replica Sets

primary node, Nodes in a Replica Set

failure of, and election of new primary, Failover and Primary Election

printReplicationInfo( ) function, Diagnostics

printShardingStatus( ) function, Getting a summary

priority key, Nodes in a Replica Set

processes

PID for ObjectId-generating process, ObjectIds
status of, Returning Updated Documents

$pull array modifier, Array modifiers

$push array modifier, Array modifiers

PyMongo

DBRef type, Driver Support for DBRefs
real-time analytics application (example), Real-Time Analytics: Python–Other Considerations

pymongo.connection.Connection class, Using PyMongo

Python Package Index, Installing PyMongo

Q

queries, Querying–Cursor Internals

commands implemented as, How Commands Work

cursors, Cursors–Cursor Internals

advanced query options, Advanced Query Options
avoiding large skips, Avoiding Large Skips–Finding a random document
getting consistent results, Getting Consistent Results
limits, skips, and sorts, Limits, Skips, and Sorts

find( ) method, Introduction to find

specifying keys to return, Specifying Which Keys to Return

geospatial, Geospatial Indexing–The Earth Is Not a 2D Plane

handling on slave servers, Read Scaling

matching more complex criteria, Query Criteria

conditionals, Query Conditionals
$not conditional, $not
OR queries, OR Queries
rules for conditionals, Rules for Conditionals

querying on embedded documents, Querying on Embedded Documents

restrictions on, Limitations

type-specific, Type-Specific Queries–The $slice operator

arrays, Querying Arrays–The $slice operator
null type, null
regular expressions, Regular Expressions

$where clauses in, $where Queries

query optimizer, …Without Sacrificing Speed

choosing index to use, Using explain and hint
reordering query terms to take advantage of indexes, Introduction to Indexing

quotation marks in strings, Using Modifiers

R

random function, Finding a random document

range queries, using conditionals, Query Conditionals

read scaling with slave servers, Read Scaling

real-time analytics, MongoDB for, MongoDB for Real-Time Analytics

reduce step (MapReduce), MapReduce

calling reduce in MongoDB (example), Example 1: Finding All Keys in a Collection

references to documents, uniquely identifying (see database references)

regular expressions, Regular Expressions

MongoRegex, Using the PHP Driver
regular expression type, Basic Data Types

relational databases

document-oriented databases versus, A Rich Data Model
features not available in MongoDB, Tons of Features…

remove( ) function, Delete

query document as parameter, Removing Documents

removes, Removing Documents

safe operations, Safe Operations
speed of, Remove Speed

removeshard command, Removing a shard

renameCollection command, Command Reference

repair of corrupt data files, Repair

repairDatabase command, Command Reference

repairDatabase( ) method, Repair

replica sets, Replica Sets

failover and primary election, Failover and Primary Election

initializing, Initializing a Set

keys in initialization document, Initializing a Set

nodes in, Nodes in a Replica Set

shards as, A Sturdy Shard

replication, Replication–Replication with Authentication

administration of, Administration

authentication, Replication with Authentication
changing oplog size, Changing the Oplog Size
diagnostics, Diagnostics

blocking for, Blocking for Replication

master-slave, Master-Slave Replication–Adding and Removing Sources

oplog, The Oplog

performing operations on a slave, Performing Operations on a Slave

replica sets (see replica sets)

replication state and local database, Replication State and the Local Database

syncing slave to master node, Syncing

replSetInitiate command, Initializing a Set

requests

batch inserts and, Batch Insert
connections and, Requests and Connections

reserved database names, Databases

REST support, Using the Admin Interface

restores, Backup and Repair

(see also administration, backup and repair)
using mongorestore utility, mongodump and mongorestore

resync command, Syncing

retrieve operations, MongoDB shell, Read

routing process (mongos), Autosharding in MongoDB, Setting Up Sharding, Starting the Servers

Ruby

custom submission forms application (example), Custom Submission Forms: Ruby–Ruby Object Mappers and Using MongoDB with Rails
object mappers and using MongoDB with Rails, Ruby Object Mappers and Using MongoDB with Rails

RubyGems, Installing the Ruby Driver

runCommand( ) function, Database Commands

S

safe operations, Safe Operations

catching normal errors, Catching “Normal” Errors

save function, The save Shell Helper

scaling with MongoDB, Easy Scaling

schema-free collections, Schema-Free

schema-free MongoDB, A Rich Data Model

schemas

chemical search engine using Java driver (example), Schema Design
example schema using DBRefs, Example Schema
real-time analytics application using PyMongo, Schema

scope, using with MapReduce, Using a scope

search engine for chemicals, using Java driver (example), Chemical Search Engine: Java–Issues

secondaries, Replica Sets

secondary nodes, Nodes in a Replica Set

security

authentication, Security and Authentication–How Authentication Works
execution of server-side JavaScript, Security
other considerations, Other Security Considerations

server-side scripting, Server-Side Scripting–Database References

disallowing server-side JavaScript execution, Other Security Considerations

servers

database server offloading processing and logic to client side, …Without Sacrificing Speed
for production sharding, Physical Servers

serverStatus command, Command Reference, serverStatus–mongostat

information from, printing with mongostat, mongostat

$set update modifier, Getting started with the “$set” modifier

shapes, finding all documents within, Geospatial Indexing

shardCollection command, Sharding Data

sharding, Sharding–Removing a shard

administration, Sharding Administration–Removing a shard

config collections, config Collections
printShardingStatus command, Getting a summary
removeshard command, Removing a shard

autosharding in MongoDB, Autosharding in MongoDB

database variable pointing to config database, Shell Utilities

defined, Introduction to Sharding

production configuration, Production Configuration

setting up, Setting Up Sharding

sharding data, Sharding Data
starting servers, Starting the Servers

shard keys, The Key to Sharding: Shard Keys

effects of shard keys on operations, How Shard Keys Affect Operations
existing collection, Sharding an Existing Collection
incrementing, versus random shard keys, Incrementing Shard Keys Versus Random Shard Keys

when to shard, When to Shard

shards, Autosharding in MongoDB

adding a shard, Adding a shard
defined, Setting Up Sharding
listing in shards collection, Shards
replica sets as, A Sturdy Shard

shell, Getting Started, MongoDB Shell–Data Types, mongo: The Shell–Shell Utilities

connecting to database, mongo: The Shell
create operations, Basic Operations with the Shell
creating a cursor, Cursors
delete operations, Delete
figuring out what functions are doing, Tips for Using the Shell
help with, Tips for Using the Shell
JavaScript functions provided by, autogenerated API, Tips for Using the Shell
MongoDB client, A MongoDB Client
repairing single database on running server, Repair
retrieve operations, Read
running, Running the Shell
running scripts, Upserts
save function, The save Shell Helper
starting without connecting to database, mongo: The Shell
update operations, Update
utilities, Shell Utilities

shutdown command, Stopping MongoDB

SIGINT or SIGTERM signal, Stopping MongoDB

skips