random-access-database

random-access-database

Store fixed size values in an abstract-random-access compatible storage provider

npm install random-access-database

Usage

var rad = require('random-access-database')
var raf = require('random-access-file')

var db = rad(raf('db'), {valueLength: 5})

db.put(0, 'hello', function (err) {
  if (err) throw err
  db.get(0, function (err, val) {
    if (err) throw err
    console.log('stored at 0:', val)
  })
})

API

var db = rad(storage, options)

Create a new databae. storage should be an abstract-random-access compatible storage provider. Options include

{
  valueEncoding: encodeValuesUsingThisEncoding,
  valueLength: lengthOfAllValues,
  offset: functionThatReturnsValueOffset
}

You must either set the valueLength of offset option. The offset option is called with the numeric index of a value and should return the byte offset of this value.

db.put(index, value, [callback])

Insert a value in the database.

db.get(index, callback)

Retrieve a value from the database. Callback is called with (err, value).

db.del(index, [callback])

Delete a value from the database. Will blank it out in the underlying storage.

License

MIT