AWS S3

Max buckets per account 100 (Can be increased by contacting amazon) Bucket naming conventions 3 - 63 Characters Only contains lowercase letters, numbers, periods and hyphens Starts with a letter or number Periods and hyphens can not follow each other Must not be an IP address format 00:03 01:36 Object limit in buckets No limit Object size minimum 0 B Object size maximum 5 TB Multipart Upload API Allows upload of objects larger than 5 GB (Recommended for files larger than 100MB) Read-after-write consistancy Lets you retrieve objects immediately after creating them Available only for PUTS of new objects Will always retrieve the latest information Potentially higher read latency Potentially lower read throughput Eventual consistency May not retrieve the latest information Lowest read latency Used for overwrite PUTS and DELETES Lowest read latency Highest read throughput Max bursts of requests per second before contacting amazon to prepare 300 PUT/LIST/DELETE 800 GET Max consistent requests before considering partition optimization 100 PUT/LIST/DELETE 300 GET Correct naming practice for objects Prefix a hash value to the name OR Reverse ID string (Varied results) Benefits of Amazon CloudFront Low latency High transfer rate Caches objects Fewer direct requests to S3 Good for GET-intensive workloads 404 Error Not found 403 Error Forbidden 400 Error Bad Request 409 Error Conflict 500 Error Internal Server Error CORS Cross origin resource sharing Bucket permissions Who is allowed to access a resource What they can do with those resources Bucket Policies Resource-based Should be used to manage cross-account permissions Limited to 20 KB Object ACL The only way to manage access to objects not owned by the bucket owner Uses XML format arn:aws:s3:::bucket_name/keyname Example s3 bucket resource arn