Quick Answer: How Does Cosmos DB Work?

What is Cosmos DB good for?

Azure Cosmos DB is a global distributed, multi-model database that is used in a wide range of applications and use cases.

It is a good choice for any serverless application that needs low order-of-millisecond response times, and needs to scale rapidly and globally..

Is Azure Cosmos DB NoSQL?

Azure Cosmos DB is a fully managed NoSQL database service for modern app development with guaranteed single-digit millisecond response times and 99.999-percent availability backed by SLAs, automatic and instant scalability, and open source APIs for MongoDB and Cassandra.

Is Cosmos DB SAAS or PaaS?

Azure Cosmos DB is a database offering that fits the cloud perfectly. As a PaaS service, you just spin a Cosmos DB up and you’re ready to go.

What is SQL API in Cosmos DB?

In Azure Cosmos DB SQL API accounts, there are two ways to read data: Point reads – You can do a key/value lookup on a single item ID and partition key. … SQL queries – You can query data by writing queries using the Structured Query Language (SQL) as a JSON query language.

What is collection in Cosmos DB?

A collection is a container of JSON documents and associated JavaScript application logic, i.e. stored procedures, triggers and user-defined functions. This topic outlines the REST operations used to manage document collections. A collection maps to a container in Azure Cosmos DB.

Is Azure Cosmos DB free?

What is free tier? When enabled on a new Azure Cosmos DB account, free tier gives the first 400 RU/s and 5 GB of storage for free for the lifetime of the account. Additionally, when using shared throughput databases, you can create up to 25 containers that share 400 RU/s at the database level (max.

How does azure cosmos DB work?

Azure Cosmos DB manages the resource partitions and splits and merges them as needed as storage and throughput requirements change. Global distribution: If it is a multi-region database, each of the resource partitions is then distributed across those regions.

Is Cosmos DB a graph database?

Azure Cosmos DB is a fully managed graph database that offers global distribution, elastic scaling of storage and throughput, automatic indexing and query, tunable consistency levels, and support for the TinkerPop standard. Graphs in the real world need to scale beyond the capacity of a single server.

Is Cosmos DB a relational database?

Cosmos DB is a multi-model NoSql database. Currently it can handle three types of non-relational data: Document databases. Graph databases.

Is Azure Cosmos DB expensive?

Cosmos DB is relatively an expensive database. The pricing model of the db is based on Throughput (Request Unit per second) you provision for the database or collections. … If the throughput you have provisioned for the db is far less than it should be, the retries may never succeed.

How is data stored in Cosmos DB?

Cosmos DB exposes the data in JSON format. … Based on the chosen API, the desired data model (graph, key-value, document or column) is projected on the underlying data store. Because of the way the data is stored and retrieved, you can use only one API against a container; multiple APIs usage is not possible.

Is Cosmos DB MongoDB?

Azure Cosmos DB implements the wire protocol for MongoDB. This implementation allows transparent compatibility with native MongoDB client SDKs, drivers, and tools. Azure Cosmos DB does host the MongoDB database engine.

Is Azure Cosmos DB relational?

In some cases, a relational database attempting to manage such entities will become unusable. … Azure Cosmos DB is a multi-model database service, which offers an API projection for all the major NoSQL model types; Column-family, Document, Graph, and Key-Value.

How do I make a cosmos DB in Azure?

Go to the Azure portal to create an Azure Cosmos DB account. Search for and select Azure Cosmos DB. Select Add. On the Create Azure Cosmos DB Account page, enter the basic settings for the new Azure Cosmos account.

Does Cosmos DB support SQL?

Cosmos DB offers a choice of APIs to work with your data stored in your Cosmos database. By default, you can use SQL (a core API) for querying your Cosmos database. Cosmos DB also implements APIs for Cassandra, MongoDB, Gremlin and Azure Table Storage.

Who uses Cosmos DB?

Who uses Azure Cosmos DB? 52 companies reportedly use Azure Cosmos DB in their tech stacks, including Microsoft, Durstexpress GmbH, and Jet.com.

How much does Cosmos DB cost?

Consumed StorageConsumed StoragePrice1 GB of consumed transactional storage (row-oriented)$0.25/month1 GB of consumed analytical storage (column-oriented) – preview$0.02/monthStored backup data (2 copies)FreeStored backup data (>2 copies) per GB$0.15