AWS Serverless Microservices with Patterns and Best Practices - Amazon SQS Short and Long Polling

The video tutorial explains Amazon SQS's short and long polling methods for receiving messages from queues. Short polling queries a subset of servers, often resulting in empty responses, while long polling queries all servers, reducing empty responses and costs. Long polling is recommended for its efficiency and cost-effectiveness, though short polling may be suitable in certain scenarios. The tutorial covers how to consume messages using both methods and highlights the benefits of long polling.

What are the two types of polling provided by Amazon SQS?

• Short polling

• Long polling

• Medium polling

• No polling

How does short polling work in Amazon SQS?

• Queries all servers

• Queries a subset of servers

• Waits for messages

• Returns empty responses immediately

What is the maximum wait time for long polling in Amazon SQS?

• 10 seconds

• 15 seconds

• 20 seconds

• 30 seconds

What is one of the main benefits of using long polling?

• Increases the number of empty responses

• Reduces the cost of using Amazon SQS

• Returns messages faster

• Requires more server resources

Explain how Amazon SQS handles message requests when using long polling.

• Returns messages immediately

• Waits until a message is available

• Only queries a subset of servers

• Always returns empty responses