An online multiplayer game studio hosts its backend on AWS and stores two categories of da… — AWS Certified Solutions Architect - Associate

An online multiplayer game studio hosts its backend on AWS and stores two categories of data in a single Amazon S3 bucket:

* Match Replay Videos: The average file size is $120\text{ MB}$ . These files are generated daily and are accessed frequently during the first $14\text{ days}$ by players. After $14\text{ days}$ , they are rarely accessed, but the studio must retain them for a total of $120\text{ days}$ for compliance and fair-play audits. The files must be retrievable within milliseconds when requested.
* Player Telemetry Logs: The average file size is $8\text{ KB}$ . These files are written continuously and are accessed frequently by analytics queries for the first $10\text{ days}$ to detect cheat signatures. After $10\text{ days}$ , they are never accessed, but must be kept for a total of $25\text{ days}$ for verification before being deleted.

Which lifecycle configuration is the most cost-effective for these datasets?

For the Match Replay Videos, configure a transition rule to S3 Glacier Instant Retrieval after $14\text{ days}$ , and an expiration rule after $120\text{ days}$ . For the Player Telemetry Logs, keep them in S3 Standard and configure an expiration rule after $25\text{ days}$ .Answer
B
For the Match Replay Videos, configure a transition rule to S3 Glacier Instant Retrieval after $14\text{ days}$ , and an expiration rule after $120\text{ days}$ . For the Player Telemetry Logs, configure a transition rule to S3 Standard-IA after $10\text{ days}$ , and an expiration rule after $25\text{ days}$ .
C
For the Match Replay Videos, configure a transition rule to S3 Glacier Flexible Retrieval after $14\text{ days}$ , and an expiration rule after $120\text{ days}$ . For the Player Telemetry Logs, keep them in S3 Standard and configure an expiration rule after $25\text{ days}$ .
D
For the Match Replay Videos, configure a transition rule to S3 Standard-IA after $14\text{ days}$ , and an expiration rule after $120\text{ days}$ . For the Player Telemetry Logs, configure a transition rule to S3 Standard-IA after $10\text{ days}$ , and an expiration rule after $25\text{ days}$ .

Answer

Transition the Match Replay Videos to S3 Glacier Instant Retrieval after 14 days and expire them after 120 days. Keep the Player Telemetry Logs in S3 Standard and expire them after 25 days.

The correct option minimizes costs by transitioning the large video files (which are well above the

128\text{ KB}

limit and remain in the tier for

106\text{ days}

, satisfying the

90\text{-day}

minimum) to S3 Glacier Instant Retrieval. S3 Glacier Instant Retrieval is cheaper than S3 Standard-IA while satisfying the millisecond retrieval time requirement. The telemetry logs are kept in S3 Standard and deleted at

25\text{ days}

to prevent both the

128\text{ KB}

size billing penalty and the

30\text{-day}

minimum storage duration penalty associated with S3 Standard-IA.

Step-by-Step Solution

Evaluate the Match Replay Videos storage tiering constraints.

The video files are large (

120\text{ MB}

) and require millisecond-level retrieval after transition. They are kept for a total of

120\text{ days}

and transitioned after

14\text{ days}

, meaning they spend

106\text{ days}

in the target tier. This exceeds the

90\text{-day}

minimum storage duration for S3 Glacier Instant Retrieval, making S3 Glacier Instant Retrieval the most cost-effective choice since it supports millisecond retrieval.

Determining the correct storage tier for the video files based on size, retrieval speed, and duration without incurring minimum storage duration penalties.

Evaluate the Player Telemetry Logs storage tiering constraints.

The log files are small (

8\text{ KB}

) and short-lived (

25\text{ days}

total retention, with transition proposed at day 10). If transitioned to S3 Standard-IA, they would reside in the tier for only

15\text{ days}

, which is less than the

30\text{-day}

minimum storage duration. Furthermore, S3 Standard-IA bills a minimum of

128\text{ KB}

per object, charging 16 times more storage capacity than actual usage. Therefore, the logs should remain in S3 Standard for the full

25\text{ days}

and then be expired.

Analyzing size and lifespan constraints to avoid S3 Standard-IA billing penalties for small and short-lived objects.

Key Concept

Optimizing S3 Lifecycle policies by balancing storage tier unit costs against minimum storage duration constraints and minimum billing object size limitations.

Estimated Time:3m 0s

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

Topics