Class: LMDB::Database

Inherits:

Object

Object
LMDB::Database

show all

Defined in:: ext/isomorfeus_hamster_ext/isomorfeus_hamster.c

Overview

An LMDB Database is a table of key-value pairs. It is stored as part of the Environment.

By default, each key in a Database maps to one value. However, a Database can be configured at creation to allow duplicate keys, in which case one key will map to multiple values.

A Database stores the keys in a sorted order. The order can also be set with options when the database is created.

The basic operations on a database are to #put, #get, and #delete records. One can also iterate through the records in a database using a Cursor.

Examples:

Typical usage

env = LMDB.new "databasedir"
db = env.database "databasename"
db.put "key1", "value1"
db.put "key2", "value2"
db.get "key1"              #=> "value1"
env.close