I would second the book and also suggest having a read through https://aws.amazon.com/builders-library/?cards-body.sort-by=item.additionalFields.customSort&card

I would second the book and also suggest having a read through https://aws.amazon.com/builders-library/?cards-body.sort-by=item.additionalFields.customSort&cards-body.sort-order=asc&awsf.filter-content-type=*all https://aws.amazon.com/builders-library/?cards-body.sort-by=.... There are some interesting problems and concepts at scale explained really well.