[1D1H-AWS] 20190204 - S3 Cross Region Replication/ Lifecycle Management Lab/CloudFront

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S3 - Cross Region Replication Exam Tips

1. Versioning must be enabled on both the source and destination buckets.

2. Regions must be unique.

3. Files in an existing bucket are not replicated automatically.

   All subsequently updated files will be replicated automatically.

4. You cannot replicate to multiple buckets or use daisy chaining. (at this time)

5. Delete markers are NOT replicated.

6. Deleting individual versions or delete markers will not be replicated.

7. Understand what Cross Region Replication is at a high level.

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S3 - Lifecycle Management Lab

1. Can be used in conjunction with versioning.

= Lifecycle management can happen either with or without versioning turned on it can be applied both

2. Can be applied to current versions and previous versions.

3. Following actions can now be done:

1) Transition to the Standard - Infrequent Access Storage Class(30 days after the creating date)

2) Archive to the Glacier Storage Class(30 days after IA, if relevant)

3, Permanently Delete

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CloudFront - Exam Tips

1. Edge Location: This is the location where content will be cached. This is separate to an AWS Region/AZ.

2. Origin: This is the origin of all the files that the CDN will distribute. This can be either an S3 Bucket, an EC2 Instance, an Elastic Load Balancer or Route53.

4. Distribution: This is the name given the CDN which consists of a collection of Edge Locations.

1) Web Distribution: Typically used for Websites.

2) RTMP: Used for Media Streaming.

5. Edge Locations are NOT just Read Only, you can write to them too.

(i.e. put an object on to them)

6. Objects are cached for the life of the TTL(Time To Live)

7. You can clear cached objects, but you will be charged.

Lecture from Udemy AWS Certified Solutions Architect - Associate 2018