Amazon DynamoDB + Dropbox Integrations

Amazon DynamoDB and Dropbox are both popular cloud storage services. They have different approaches. Amazon DynamoDB is a relational database service and Dropbox is a file sharing service. They complement each other by storing data in the right format, which provides more convenience to users.

Amazon DynamoDB is a highly available and scalable NoSQL database service for applications. It is a key-value store provided by Amazon Web Services (AWS. Users can create tables, indexes, add, update, read, and delete records. There are two types of tables – global tables and local tables. Global tables are accessible from any region, while a local table only has limited access within a region. Both types support multi-document transactions. The unique feature of DynamoDB is that it supports Cassandra-like secondary indexes. A secondary index stores data in sorted order, and supports range queries, projections, and hash-based lookups. Secondary indexes in DynamoDB also support composite keys so that users can perform full-text search. Another feature of DynamoDB is the ability to migrate data between tables in different AWS regions.

Dropbox is a popular cloud storage service that allows users to store their files and synchronize them across multiple computers and mobile devices through the cloud. Users can also share their files with others. Dropbox’s primary storage system is based on GridFS, which runs on Amazon S3. Different users’ files are stored on different servers to ensure system reliability and availability. All information sent between client systems and servers is encrypted and transferred via SSL/TLS to prevent unauthorized access. When files are being synchronized or shared, the process can be paused temporarily to reduce system load or avoid network congestion. It also provides local caching when users log in to mobile devices to reduce network traffic and improve performance. As of January 2014, over 300 million users use Dropbox to store their files.

Integrating Amazon DynamoDB and Dropbox enables users to store their files in the right format and helps them save time and effort. Users can save their files in Amazon DynamoDB as objects with any number of attributes in JSON or XML format. After uploading, they can query the file by attribute values. For example, if a user wants to query an image by its title, he or she can do so in one query using a secondary index on the item’s title attribute value. If a user wants to share images with others, he or she can first upload the images into Dropbox, then link Dropbox to Amazon S3 or Amazon Glacier, then create a global table in DynamoDB that stores the image items in object form using the Dropbox URL as the key attribute value. Dropbox will be responsible for synchronizing the changes made to the images in their server with the updated image attributes in Amazon S3 or Amazon Glacier. This will reduce the need for users to upload their files by hand every time they change a file and help them save time and effort.

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