AWS SQS Workshop Samuel James 

Agenda •Introduction •Choosing a Queue System •AWS SQS •AWS SQS Types •AWS SQS Pricing •Cost Optimisation •Practical Coding Session 

Message Queue A message queue provides temporary message storage that allows exchange of data between a message producer and a consumer in an asynchronous manner. 

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Using a Queue System? 

• What type of data fetching model is supported pull or push? • What is the maximum lifetime of messages or the maximum queue depth? • What happens with messages that consistently fail? Is there a dead-letter queue option? • Can messages arrive out of order relative to the order from which they were sent? Credit: Brian Zambrano (Serverless design & best practices) 

AWS SQS 

AWS SQS •Managed Service (Serverless) & scales automatically based on demand •You can use AWS SQS even if your app is not running inside of AWS infrastructure •Unlimited queues and messages •Retains messages up to 14 days •Message Locking (Prevents multiple consumers from processing a message at the same time) •Long Polling •Supports Batching •Dead Letter Queue (DLQ) 

AWS SQS Types • Standard Queue • FIFO Queue 

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Pricing 

STANDARD QUEUE (PRICING) FIFO QUEUE (PRICING) First 1 million monthly requests are free First 1 million monthly requests are free $0.0000004 per request $0.0000005 per request $0.40 per 1 million requests $0.50 per 1 million requests 

• Every API action (sending, receiving, deleting or changing message visibility) is a request. • Each 64KB chunk of message payload is billed as 1 request. A message of size 128KB will be billed as 2 requests. How SQS is Billed? 

Cost Optimisation 

• Use long polling • Batch your requests • Poll less frequently if you don’t need to Cost Optimisation techniques 

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Thank you :)