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S3 Quiz

250,527

A million images are required to be uploaded to S3. What option ensures optimal performance in this case?

A.
Usea sequential ID for the prefix.

B.
Use a hexadecimal hash for the prefix.

C.
Use a hexadecimal hash for the suffix.

D.
Use a sequential ID for the suffix.

B. Use a hexadecimal hash for the prefix.

This recommendation for increasing performance in case of a high request rate in S3 is given in the AWS documentation.

For more information on S3 performance considerations, please visit the following URL:

https://docs.aws.amazon.com/AmazonS3/latest/dev/request-rate-perf-considerations.html

Note:
Amazon S3 maintains an index of object key names in each AWS Region. Object keys are stored in UTF-8 binary ordering across multiple partitions in the index. The key name determines which partition the key is stored in. Using a sequential prefix, such as a timestamp or an alphabetical sequence, increases the likelihood that Amazon S3 will target a specific partition for a large number of your keys, which can overwhelm the I/O capacity of the partition.

If your workload is a mix of request types, introduce some randomness to key names by adding a hash string as a prefix to the key name. By introducing randomness to your key names, the I/O load is distributed across multiple index partitions. For example, you can compute an MD5 hash of the character sequence that you plan to assign as the key, and add three or four characters from the hash as a prefix to the key name.

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