Home / System Designing / 08. Infrastructure Tooling / 07. SQS SQS¶ The chapters in this module, in reading order. # Chapter 00 SQS — ELI5 01 Visibility timeout, FIFO, deduplication — how SQS actually delivers 02 boto3, poll loops, batch operations — the SDK surface 03 DLQ, throughput, cost — the production surface