# Dyno Item Size

This is a simple utility to calculate the size of an item as [DynamoDB](https://aws.amazon.com/documentation/dynamodb/) would. The goal of this project is to be accurate within a byte so that you can make optimized requests to DynamoDB.

## Usage

```
var dynoItemSize = require('dyno-item-size');
var item = {
  'string': 'string',
  'number': 27,
  'buffer': new Buffer('buffer', 'utf8')
};
var size = dynoItemSize(item);
console.log(size);
// => 31
```

## API

`dynoItemSize` comes with a two helper functions to translate the size of an object into it's read or write capacity cost.

### `dynoItemSize(object)`

Takes an object like the one shown in usage and returns the size in bytes.

### `dynoItemSize.read(object)`

Takes an object like the one shown in usage and returns the read capacity cost.

### `dynoItemSize.write(object)`

Takes an object like the one shown in usage and returns the write capacity cost.

## Resources

This module has been implemented by reading a few resources.

- [Item Size in DdynamoDB from stack overflow](http://stackoverflow.com/questions/8988389/itemsize-in-dynamodb)
- [Provision Throughput from the AWS DynamoDB docs](http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.ProvisionedThroughput.html)


compute the size of an item the same way dynamodb does. 

@kenzable/dyno-item-size

compute the size of an item the same way dynamodb does

kenzable

dyno-item-size

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@kenzable/dyno-item-size

Dyno Item Size

Usage

API

dynoItemSize(object)

dynoItemSize.read(object)

dynoItemSize.write(object)

Resources

Related posts

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`dynoItemSize(object)`

`dynoItemSize.read(object)`

`dynoItemSize.write(object)`