Suddenly, I thought to organize various Cloud services, decided to attach a record.
On the storage option of Google Cloud Platform, suitable case respectively
Cloud Datastore (No SQL)
best for unstructured objects or or semi-structured data,Key-value data.
This storage services provides terabytes of capacity with
a maximum unit size of one megabyte per entity
Use case App Engine Applications
Bigtable (No SQL)
best for flat data,heavry write/read,event,analytical data
does not support SQL's queries nor does it support multi-row transactions.
This storage service provides petabytes of capacity with
a maximum unit size of 10 megabytes per cell and 100 megabytes per row.
Use case Financial and IoT data
Cloud Storage (Blobstore)
best for structured or unstructured binary or object data
This storage service provides petabytes of capacity
with a maximum unit size of five terabytes per object.
Use case Images,large media files,backups
Cloud SQL (Relational SQL for OLTP)
best for Web frameworks,existing applications
Cloud SQL provides terabytes of capacity
Use case user credentials,customer orders
Cloud Spanner (Relational SQL for OLTP)
best for large scale database applications that are larger than two terabytes
Use case financial trading and e-commerce use cases.
use one or several of these services to get the job done.