![]() ![]() Usually you would use schema-migrations to handle changes in the database. EFCore, which was built for relational databases, does not provide a smooth experience here. ![]() The SDK as well as MongoDB can deal with unknown and missing attributes. Not removing properties for backwards compatibility and other tricks are used to make this work in production. This property can then be read and an appropriate action can be taken to migrate the document. In a more rigorous environment we can regularly find a version property on documents saved in non-relational databases. Since CosmosDB is a non-relational database it does not have a set schema, which gives us the benefit of being able to save unstructured documents. Versioning can always come up in the most unpredictable way but doesn’t for most of the application lifecycle. (Features are not shown here.) Versioning This can be a little overwhelming depending on which specific features you want to use. Entity Framework Core allows us to use any relational database and CosmosDB, which might be helpful, but then-why would you mix relational and non-relational databases? Lastly it comes as no surprise that the SDK has the most granular interface and a lot more capabilities than the other two contenders. #DOCUMENTDB EMULATOR MAC CODE#The benefit here is that we can use (almost) the same code for MongoDB and CosmosDB. ![]() MongoDB lacks some helper utilities for creating and managing databases and collections, which is to be expected since we are not using a CosmosDB specific protocol. The example above is straightforward, but a little more verbose than the EFCore version because it does not hide the database layer from the programmer.Īll approaches so far are easy to use and quick to set up. The CosmosDB SDK does this in a straightforward way, using the endpoint URI as well as the master (or read) key which are generated when creating CosmosDB. First of all we want to be able to connect to CosmosDB, create a database, create a collection and do basic read/write operations. With a CosmosDB running in the cloud, we will now explore the different APIs and how they work with fairly simple tasks. It should be noted that you need to decide which API you want to use the CosmosDB with at creation time. #DOCUMENTDB EMULATOR MAC HOW TO#Getting Startedįor a quick-start on how to get a CosmosDB up and running in Azure please see Microsoft’s documentation. #DOCUMENTDB EMULATOR MAC DRIVER#The library we are using is the official MongoDB Driver for C#. ![]() As a native way to use the NoSQL features and years of development time invested in MongoDB libraries I hope for a very smooth experience. This means that we should be able to use an existing MongoDB Driver to talk to CosmosDB. MongoDBĬosmosDB provides MongoDB Wire Protocol Support. EFCore promises to be a high-level abstraction over the database layer which would reduce the amount of code that has to be maintained in a given project. As it happens a CosmosDB Provider is in preview and has been teased by Microsoft in some of their blogs. Entity Framework CoreĮntity Framework Core is an ORM developed by Microsoft specifically for use with. I am expecting a fairly low-level approach on interacting with different documents and collections. As the primary SDK it comes with a specialized feature set tailored for use with CosmosDB. NET SDK is currently available in version 2 and is in preview for version 3. Meet the contenders: Microsoft Azure Cosmos DB. To get a feeling for which API suits us best we are going to compare the different APIs by using. Today we are going to look at the SQL and MongoDB approach before using the preview of the CosmosDB Entity Framework Core Provider. As a NoSQL database it uses the common structure of databases with collections known from other NoSQL databases such as MongoDB.Īs a developer the interesting bit-aside from its big feature set-is that the database has multiple APIs with which it can be accessed. In times of big data and the cloud these are very welcome features to gain without investing development time. NET CoreĬosmosDB, formerly known as DocumentDB, is Microsoft’s take on a globally distributed database, which automatically manages scaling and data consistency. ![]()
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