
What is Azure Cosmos DB 1?
1. What is Azure Cosmos DB? Azure Cosmos DB is a document database service that enables us to store, query, and index our data in a highly available, globally consistent, and scalable cloud-based NoSQL database. It is fully managed which means availability, reliability, and security are all handled for us.
How much does it cost to provision a Cosmos DB database?
Provisioned throughput for an individual container: If you create an Azure Cosmos DB database account in East US 2 with two containers with provisioned throughput of 500 RU/s and 700 RU/s, respectively, you would have a total provisioned throughput of 1,200 RU/s. You would thus be charged 12 x $- = $-/hour.
What is the Cosmos DB profiler?
In building a more globally-resilient application / system, Cosmos DB combines with other Azure services, such as Azure App Services and Azure Traffic Manager. [20] The Cosmos DB Profiler cloud cost optimization tool detects inefficient data queries in the interactions between an application and its Cosmos DB database.
What is global distribution of Cosmos DB databases?
Global distribution Cosmos DB databases can be configured to be available in any of the Microsoft Azure regions (54 regions as of December 2018), letting application developers place their data closer to where their users are. Each container's data gets transparently replicated across all configured regions.

What is Azure Cosmos DB?
Azure Cosmos DB emulator: Azure Cosmos DB emulator provides a local environment that emulates the Azure Cosmos DB service for development purposes . Emulator is offered at no cost and with high fidelity to the cloud service. Using Azure Cosmos DB emulator, you can develop and test your applications locally, without creating an Azure subscription or incurring any costs. You can develop your applications by using the emulator locally before going into production. After you are satisfied with the functionality of the application against the emulator, you can switch to using the Azure Cosmos DB account in the cloud and significantly save on cost. For more information about emulator, see Using Azure Cosmos DB for development and testing article for more details.
What is serverless mode in Azure Cosmos?
Serverless: In serverless mode, you don't have to provision any throughput when creating resources in your Azure Cosmos account. At the end of your billing period, you get billed for the amount of Request Units that has been consumed by your database operations.
Why are you billed hourly?
You are billed hourly for the maximum provisioned throughput for a given hour. Note. Because the provisioned throughput model dedicates resources to your container or database , you will be charged for the throughput you have provisioned even if you don't run any workloads.
Is there a minimum price for Azure Cosmos?
If you deploy your Azure Cosmos DB account to a non-government region in the US, there is a minimum price for both database and container-based throughput in provisioned throughput mode. There is no minimum price in serverless mode. The pricing varies depending on the region you are using, see the Azure Cosmos DB pricing page for latest pricing information.
How is storage billed?
Storage: You are billed a flat rate for the total amount of storage (in GBs) consumed by your data and indexes for a given hour. Storage is billed on a consumption basis, so you don't have to reserve any storage in advance. You are billed only for the storage you consume.
Can you create a Cosmos database?
You can create an Azure Cosmos DB account, create database and collections and run a sample application by using the Quickstarts and tutorials. You can run the sample application without subscribing to an Azure account or using your credit card.
Does reserved capacity affect Azure Cosmos?
Reserved capacity provides a billing discount and does not affect the runtime state of your Azure Cosmos DB resources. Reserved capacity is available consistently to all APIs, which includes MongoDB, Cassandra, SQL, Gremlin, and Azure Tables and all regions worldwide. You can learn more about reserved capacity in Prepay for Azure Cosmos DB resources with reserved capacity article and buy reserved capacity from the Azure portal.
What is Cosmos DB?
The cost of all database operations is normalized and expressed as request units (RU). Azure Cosmos DB offers two database operations models: 1 Provisioned Throughput is measured in request units per second (RU/s) and billed per hour. It offers single-digit millisecond reads and writes and 99.999-percent availability worldwide, backed by SLAs. It is ideal for large, critical workloads requiring guaranteed low-latency and high-availability. You can choose between two capacity management options: Standard Provisioned Throughput and Autoscale Provisioned Throughput. 2 Serverless bills for the request units (RU) used for each database operation. Serverless makes it easy to run spiky workloads that don’t have sustained traffic. It can handle traffic bursts on demand, without resource planning or management.
How much RU/s is Cosmos DB?
If you create an Azure Cosmos DB database account in East US 2 with two containers with standard provisioned throughput of 500 RU/s and 700 RU/s, respectively, you would have a total provisioned throughput of 1,200 RU/s. You would thus be charged 12 x $0.008 = $0.096 /hour.
What is request unit in Azure Cosmos?
Request units are the currency for database operations in Azure Cosmos DB. Each operation - writes, updates, reads and queries - consumes CPU, memory and IOPs resources. These resources incur charges which are expressed in request units (RU). Provisioned throughput is the total throughput capacity for database operations and is set as request units per second (RU/s). To learn more please visit request units in Azure Cosmos DB page.
What is the storage tier of Azure Cosmos?
Your data is managed in two distinct storage tiers, transactional and analytical, with workloads operating on the same logical data without interfering with each other. While transactional storage is always enabled by default, you must explicitly enable analytical storage on your Azure Cosmos DB container to use Azure Synapse Link to run analytics over data in Azure Cosmos DB using Core (SQL) API or API for MongoDB.
How much Azure Cosmos DB credit for 30 days?
Get Started: Try Azure Cosmos DB and other Azure services as a part of a 12-month Azure free account. Get $200 credit for 30 days and enjoy 400 RU/s of provisioned throughput and 25 GBs of storage per month free. New Azure free accounts can also enable the Azure Cosmos DB free tier to gain additional free provisioned throughput and storage.
How many RU/s is Azure?
Starting at a minimum 400 request units per second (RU/s), standard provisioned throughput can be manually configured on your container or database using Azure portal or programmatically using an API in increments of 100 RU/s. You will be billed hourly for the RU/s provisioned on your container or database.
What is Azure Cosmos availability zone?
The Azure regions eligible to be availability zones are: UK South, Southeast Asia, East US, East US 2, Central US, West Europe, West US 2, Japan East, North Europe, France Central, and Australia East.
What is Azure Cosmos DB?
In Azure Cosmos DB, you can provision throughput in two different granularities; containers and databases. Azure Cosmos DB Containers is either a collection, table or graph depending on the API you are using to store your objects. Azure Cosmos DB database is a container of all the containers shared within that database.
What is reserved capacity in Azure Cosmos?
Azure Cosmos DB reserved capacity model is an upfront commitment on requests units needed over time. The discounts are tiered such that the more request units you use over a longer period, the more your discount will be. These discounts are applied immediately. Any RUs used above your provisioned values are charged based on the non-reserved capacity cost.
How is consumed storage calculated?
The total storage used is the total storage of data and indexes used across all selected regions you are using for Azure Cosmos DB. If you are replicating Azure Cosmos DB into 3 regions, you will pay for that total storage cost in each of those three regions. Additional estimating assistance on storage can be found with our storage calculator.
Does Azure Cosmos DB index every record?
By default, Azure Cosmos DB automatically indexes every property of every record . This is intended to ease development and ensure excellent performance across many different types of ad-hoc queries. If you have large records with thousands of properties, you may find that paying the RU cost for indexing every single one of those properties may be wasteful, especially if you only query against 10 or 20 of those properties. As you get closer to getting a handle on your specific workload, our guidance is to tune your index policy. Full details on Azure Cosmos DB index policy can be found here.
Is Azure Cosmos DB on-prem?
All of this is for each data center! IaaS DB implementations reduce the cost for the data center and electricity, but still require the licensing, networking, VMs and storage to run the solution. As a fully-managed database service, Azure Cosmos DB simplifies billing by charging only for provisioned throughput and consumed storage . There are no additional license fees, hardware, utility or facility costs. When you consider the multi region capabilities of Azure Cosmos DB, this reduction in cost is a substantial savings of existing on-prem solutions.
What is Azure Cosmos DB?
Azure Cosmos DB is Microsoft's fast NoSQL database with open APIs for any scale. It offers turnkey global distribution across any number of Azure regions by transparently scaling and replicating your data wherever your users are. The service offers comprehensive 99.99% SLAs which covers the guarantees for throughput, consistency, availability and latency for the Azure Cosmos DB Database Accounts scoped to a single Azure region configured with any of the five Consistency Levels or Database Accounts spanning multiple Azure regions, configured with any of the four relaxed Consistency Levels. Azure Cosmos DB allows configuring multiple Azure regions as writable endpoints for a Database Account. In this configuration, Azure Cosmos DB offers 99.999% SLA for both read and write availability.
Can you claim more than one service?
If you purchased more than one Service ( not as a suite), then you may submit claims pursuant to the process described above as if each Service were covered by an individual SLA. For example, if you purchased both Exchange Online and SharePoint Online (not as part of a suite), and during the term of the subscription an Incident caused Downtime for both Services, then you could be eligible for two separate Service Credits (one for each Service), by submitting two claims under this SLA. In the event that more than one Service Level for a particular Service is not met because of the same Incident, you must choose only one Service Level under which to make a claim based on the Incident. Unless as otherwise provided in a specific SLA, only one Service Credit is permitted per Service for an Applicable Monthly Period.
What is Cosmos DB?
Internally, Cosmos DB stores "items" in "containers", with these two concepts being surfaced differently depending on the API used (these would be "documents" in "collections" when using the MongoDB-compatible API, for example). Containers are grouped in "databases", which are analogous to namespaces above containers. Containers are schema-agnostic, which means that no schema is enforced when adding items.
When did Cosmos DB partition?
Cosmos DB added automatic partitioning capability in 2016 with the introduction of partitioned containers. Behind the scenes, partitioned containers span multiple physical partitions with items distributed by a client-supplied partition key. Cosmos DB automatically decides how many partitions to spread data across depending on the size and throughput needs. When partitions are added or removed, the operation is performed without any downtime so data remains available while it is re-balanced across the new or remaining partitions.
What are the compatibility APIs for Cosmos?
five different compatibility APIs, exposing endpoints that are partially compatible with the wire protocols of MongoDB, Gremlin, Cassandra, Azure Table Storage, and etcd; these compatibility APIs make it possible for any compatible application to connect to and use Cosmos DB through standard drivers or SDKs, while also benefiting from Cosmos DB's core features like partitioning and global distribution.
What is TTL in Cosmos?
A " Time to Live " (or TTL) can be specified at the container level to let Cosmos DB automatically delete items after a certain amount of time expressed in seconds. This countdown starts after the last update of the item. If needed, the TTL can also be overloaded at the item level.
What is change feed in Cosmos?
Each Cosmos DB container exposes a change feed, which clients can subscribe to in order to get notified of new items being added or updated in the container. As of 7 June 2021, item deletions are currently not exposed by the change feed. Changes are persisted by Cosmos DB, which makes it possible to request changes from any point in time since the creation of the container.
How much is 1,000,000 RUs?
As an example of costing, using a single region instance, a count of 1,000,000 records of 1k each in 5s requires 1,000,000 RUs At $0.008/hour, which would equal $800. Two regions double the cost.
Is partitioning available in Cosmos DB?
Before partitioned containers were available, it was common to write custom code to partition data and some of the Cosmos DB SDKs explicitly supported several different partitioning schemes. That mode is still available but only recommended when storage and throughput requirements do not exceed the capacity of one container, or when the built-in partitioning capability does not otherwise meet the application's needs.
