Scaling & Decoupling

Load Balancer · Layer · Protocol · Use Case

Units

Elastic Load Balancing (ELB)
Loosely Coupled Architectures
Stateless vs. Stateful Apps
SQS as Buffer

Practice questions

Generated from this module’s study material.

1. What best describes "SQS: Standard: At-least" in this context?

time streaming. Data retained up to 365 days (can replay).once delivery, best-effort ordering (Standard queue)out notifications → SNStime records).

2. Which of the following statements is accurate based on the Scaling & Decoupling study material?

Amazon ECS — EC2 Launch Type: You provision/maintain the EC2 instances. EC2 must run ECS Agent to register in the cluster.Amazon Keyspaces — Apache Cassandra-compatible. Serverless. Single-digit millisecond latency. CQL. Use for IoT, time-series.SQS: Standard: At-least-once delivery, best-effort ordering (Standard queue)Design Resilient Architectures — 26%

How to use this

Open a unit and mark it complete when you are ready to move on.

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