What is Amazon DynamoDB?

What is Amazon DynamoDB?

Amazon DynamoDB is a fully managed, serverless, key-value NoSQL database designed to run high-performance applications at any scale. DynamoDB offers built-in security, continuous backups, automated multi-Region replication, in-memory caching, and data export tools.

When can I use Amazon DynamoDB?

You should consider using DynamoDB if you:

  1. Have had scalability problems with other traditional database systems.
  2. Are actively engaged in developing an application or service.
  3. Are working with an online transaction processing (OLTP) workload.

What is Amazon DynamoDB why there is need to introduce it?

DynamoDB is a key-value NoSQL database. Primarily This makes it Amazon’s preferred database for simple and fast data models, such as managing user profile data, or web session information for applications that need to quickly retrieve any amount of data at Internet scale.

Is AWS DynamoDB free?

AWS offers a free tier you can use to scale up your operations. For DynamoDB, the free tier provides 25 GB of storage, 25 provisioned write capacity units (WCU), and 25 provisioned read capacity units (RCU). You can use these resources for free for as long as 12 months, and reduce your monthly DynamoDB pricing.

Is DynamoDB relational?

Instead of the relational model, NoSQL databases (like DynamoDB) use alternate models for data management, such as key-value pairs or document storage. For more information, see What is NoSQL? .

How DynamoDB stores data?

Amazon DynamoDB stores data in partitions. A partition is an allocation of storage for a table, backed by solid state drives (SSDs) and automatically replicated across multiple Availability Zones within an AWS Region.

Where is DynamoDB used?

When to use DynamoDB:

  1. When key-value or simple queries are present.
  2. When a very high read/write rate is needed.
  3. When auto-sharding is required.
  4. When auto-scaling is required.
  5. When low latency is required.
  6. When there is no size or throughput limit.
  7. When there is no tuning.
  8. When high durability is required.

Is DynamoDB cheap?

In my experience – and with my uses cases – I have found that for small to medium sized projects DynamoDb ends up being cheaper, and in some cases even completely free because the use fits within the free-tier that aws offers – which is pretty generous. DynamoDb is my goto for these types of applications.

What is DynamoDB based on?

Amazon DynamoDB is based on the principles of Dynamo, a progenitor of NoSQL, and brings the power of the cloud to the NoSQL database world. It offers customers high-availability, reliability, and incremental scalability, with no limits on dataset size or request throughput for a given table.

Who designed DynamoDB?

Swaminathan (Swami) Sivasubramanian
One of Vogel’s coauthors on the 2007 Dynamo paper, and a key contributor to the development of DynamoDB was Swaminathan (Swami) Sivasubramanian, then an Amazon research engineer working on the design, implementation, and analysis of distributed systems technology, and now vice president of Database, Analytics, and …

Is DynamoDB costly?

DynamoDB charges per GB of disk space a table consumes. The first 25 GB consumed per month is free, and prices start at $0.25 per GB-month thereafter.

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