Quiz: What is a Dead Letter Queue (DLQ) in message broker architecture?
A Dead Letter Queue captures poison pill messages that exceed retry limits, preventing consumer crash-loops and enabling triage.
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A Dead Letter Queue captures poison pill messages that exceed retry limits, preventing consumer crash-loops and enabling triage.
Client-Side Load Balancing shifts routing decisions to the caller using cached service registry endpoints, eliminating an extra network hop.
Amazon S3 (Simple Storage Service) provides object storage. Files are stored in "buckets" and addressed by keys.
AWS Lambda is a serverless compute service. You upload your function code and Lambda handles scaling, patching, and infrastructure.
Amazon S3 (Simple Storage Service) provides industry-leading object storage with 99.999999999% (11 9s) data durability.
AWS Lambda lets you run functions without provisioning or managing servers, scaling automatically from a few requests per day to thousands per second.
IAM Roles issue short-lived temporary security tokens that are automatically rotated, drastically reducing the risk of compromised static credentials.
SQS queues messages for worker polling (point-to-point); SNS broadcasts messages to multiple subscribing endpoints (fan-out push model).