Google Cloud Storage Notes

Difference between Standard, Nearline, and Coldline storage

There are 3 storage classes for google cloud storage.
Docs describe the use-cases for each storage class, but needed to do a bit of close reading to understand the difference between the 3 products in terms of cost and usage.
Turns out that the differences between the 3 are:
- Cost per GB
- Cost per 10,000 Class A operation
- Cost per 10,000 Class B operations
- SLA guarantees (standard has more 9's)
This is where it gets a bit murky.
There are also costs for data ingress and egress.
- These costs are the same for all storage classes
- Comes up to ~US$0.12 per GB for moving data, unless it's China where it's US$0.23
- Ingress is free
However, free ingress comes with a catch, because "operations" are a separate cost table.
So from what I understand, you're charged separately for moving data and performing an operation. See operations cost table
This means that nearline and coldline cost more to write and read from.

API or Feature	Class A Operations	Class B Operations	Free Operations
JSON API	storage.*.insert¹	storage.*.get	storage.channels.stop
	storage.*.patch	storage.*.getIamPolicy	storage.buckets.delete
	storage.*.update	storage.*.testIamPermissions	storage.objects.delete
	storage.*.setIamPolicy	storage.*AccessControls.list	storage.projects.hmacKeys.delete
	storage.buckets.list	storage.notifications.list
	storage.buckets.lockRetentionPolicy	Each object notification
	storage.notifications.delete
	storage.objects.compose
	storage.objects.copy
	storage.objects.list
	storage.objects.rewrite
	storage.objects.watchAll
	storage.projects.hmacKeys.create
	storage.projects.hmacKeys.list
	storage.*AccessControls.delete
XML API	GET Service
	GET Bucket (when listing objects in a bucket)	GET Bucket (when retrieving bucket configuration)	DELETE
	PUT	GET Object
	POST	HEAD
Object Lifecycle Management	SetStorageClass		Delete

¹ Simple, multipart, and resumable uploads with the JSON API are each considered one Class A operation.