Why you CAN'T into serverless
About Me
Kamil Mrzygłód @ Demant Technology Centre
http://blog.codenova.pl/
@Kamil_Mrzyglod
Serverless
Serverless computing is a cloud computing execution model in which the cloud provider dynamically manages the allocation of machine resources.
https://en.wikipedia.org/wiki/Serverless_computing
PaaS == Serverless
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Azure Functions on App Service Plan == Serverless
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Serverless computing is a cloud computing execution model in which the cloud provider dynamically manages the allocation of machine resources.
https://en.wikipedia.org/wiki/Serverless_computing
Less control == Less money
Focus on development
Easier CI/CD
Smaller codebase
Shorter TTM
Everyone's happy! :)
Less control == Lack of understanding
Focus on delivery
Difficult testing and profiling
Difficult integration
Performance as a second-class citizen
Everyone's happy! :(
Do you know the limits?
Pricing
Examples
If you allocated 512MB of memory to your function, executed it 3 million times in one month, and it ran for 1 second each time, your charges would be calculated as follows:
A function with observed memory consumption of 512 MB executes 3.000.000 times during the month and has an execution duration of one second. Monthly billing would be calculated as follows:
$18.74
€15.18
Real Example
Alternative
Remember
Memory used by a function is measured by rounding up to the nearest 128 MB, up to the maximum memory size of 1.536 MB, with execution time calculated by rounding up to the nearest 1 ms. The minimum execution time and memory for a single function execution is 100 ms and 128 mb respectively.
Performance
Being smart matters :)
https://blog.scooletz.com/2017/11/30/azure-functions-processing-2-billions-items-per-day-1/
Reactive architecture matters
Skill matters
With Azure Cosmos DB, you only pay for provisioned throughput and data stored in a container (e.g., a container of documents or a table of records or a graph consisting of vertices/edges). Provisoned throughput, billed as Request Units (RU) per second or (RU/s), allows you to read from or write data into containers. Each container is billed on an hourly basis for throughput provisioned in increments of 100 RU/second, with a minimum of 400 RU/second, and data stored (in GBs). Unlimited containers have a minimum of 100 RU/s per partition.
Minimum price(4RU) = $23.61
PER CONTAINER
Thank you!
Why you CAN'T into serverless
By kamil_mrzyglod
