TWC using Azure CosmosDB

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TWC using Azure CosmosDB

Postby richard.weedon.ctr@navy.mil » Wed May 12, 2021 11:38 am

Has anyone attempted using Azure CosmosDB-Cassandra with TWC? Microsoft engineers swear that it exactly replicates Cassandra API on an ethernet frame layer.

If this works, any guess on what cost would be or any feedback on these stats from someone running a busy TWC Cassandra backend?

https://docs.microsoft.com/en-us/azure/ ... troduction

https://cosmos.azure.com/capacitycalculator/
They price it by "RU/hour". Which is a sum of these parameters:

Transactional Workload
Cost per 100 RU/s per hour 0.008 USD
EST. THROUGHPUT REQUIRED Hide Details x 400 RU/s
Throughput for Queries 10 RU/s
Throughput for Point Reads 50 RU/s
Throughput for Creates 50 RU/s
Throughput for Updates 99 RU/s
Throughput for Deletes 0 RU/s
Minimum Throughput Required 400 RU/s
* Minimum throughput required is 400 RU/s
EST. WORKLOAD COST/MONTH 23.36 USD

These rates scale way up and down depending on row size (1kb - 2048kb). What is size of TWC rows?
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Re: TWC using Azure CosmosDB

Postby sabrinagilbe@gmail.com » Fri Jun 11, 2021 4:21 am

There is Autopilot for Cosmos in preview now which scales the DTU on the fly.

The max document size is 2MB too which can be problematic.
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Re: TWC using Azure CosmosDB

Postby lopezmason4441958@gmail.com » Sun Jul 31, 2022 11:57 pm

sabrinagilbe@gmail.com wrote:There is Autopilot for Cosmos in preview now which scales the DTU on the fly. we become what we behold

The max document size is 2MB too which can be problematic.

I quite like this issue. It's quite useful. I also don't see the problem because with the capacity?
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