Published on September 25, 2017 by Microsoft
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Kirill Gavrylyuk shows Scott Hanselman an easy way to build planet-scale serverless apps in minutes using Azure Cosmos DB and Azure Functions. Customers expect apps to offer event-driven, near real-time experiences. Now you can subscribe to changes in Azure Cosmos DB collections and trigger logic in real time while being globally-distributed, and without deploying or managing any servers.

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12 Comments on "Serverless Apps with Azure Cosmos DB and Azure Functions"

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Mike Underwoo
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Mike Underwoo
18 days 1 hour ago

Does change fee guarantee any kind of order? I can see this being extremely useful in event handling to update materialized views, but if you can't get the events out in the same order they came in it could be very limited.

KirillG_msft
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KirillG_msft
20 days 2 hours ago

Hi @Sean, yes, the processing order is guaranteed within the scope of a partition key (and more precisely a physical partition)

KirillG_msft
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KirillG_msft
20 days 2 hours ago

@Roy, @Joe: Hi Roy, Joe, there are no servers/instances/cores to manage here. You pay for the time your code runs and the throughput you need.

KirillG_msft
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KirillG_msft
20 days 2 hours ago

@Karthick Thoppe: Hi Karthick, the new thing here is the trigger for functions. yes there are features similar to  CosmosDB’ ChangeFeed in other databases.

Joe
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Joe
20 days 18 hours ago

How exactly is this serverless?And doesn't this now pull business logic back onto the database?

Sean
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Sean
23 days 7 hours ago

Anybody know if this guarantees ordered processing of the incoming change events? If I have five writes to cosmos, and each would trigger a function, will those functions be run on the documents in the order they were written to cosmos?

Richard
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Richard
24 days 10 hours ago

I can't work out how to use this when developing locally in Visual Studio 2017. Any ideas?

dank
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dank
25 days 5 hours ago

The peanut butter and chocolate combo does not scale outside the US, sorry Scott.

ellistev
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ellistev
25 days 6 hours ago

Well, that was fun and easy.  Now, to come up with a fun project to utilize this setup.  Thank you Kirill and Scott!

Roy
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Roy
25 days 9 hours ago

By serverless, how so?

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