Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, complete managed message queue service, designed to separate from the components of the cloud application and can send any large amount of data, There is no need to lose the message and it is not required that other services are always available.
Amazon SQS is fully managed by Amazon and can decouple between services. It is accessible via the network, is auto-scaled and is offered in a system that pays as much as it uses. SQS is aimed at providing a highly scalable host message queue that solves common producer-consumer problems or issues resulting from producers and consumer connections.
Two kinds of queues are prepared for SQS.
The queue acts as a buffer between the component that creates and stores data and the component that receives and processes the data. In other words, queues solve problems that arise when producers (producers) generate jobs earlier than consumer (Consumer) processing speed or where producers and consumers are intermittently connected to the network to do.
Standard Queue – It provides at least one delivery with maximum throughput, best effort type order.
SQS FIFO Queue – It is designed to ensure that messages are processed exactly once in the order in which they were sent.
There are only three basic operations that the user makes to the SQS: data entry/extraction/ deletion. Since tuning to the queue is unnecessary, users using SQS can use the queue service very easily. For this reason, SQS is generally used as a “queue for communicating commands (instructions) from different programs A to B.
Features of Amazon Simple Queue Service
- High speed
- High reliability
- Low cost
- Distributed managed queue
- Excellent scalability
How to Create a Queue in Simple Queue Service
- Access to SQS
- Click on create new queue.
- Enter Queue name and click ‘Create Queue’.
Functions of AWS Simple Queue Service
Delay Queues – Default Visibility Timeout is the most important function in SQS. SQS does not send that queue for the time specified by Default Visibility Timeout after sending the queue. That means that if the time specified in Default Visibility Timeout, it will also send the same queue.
Default Visibility Timeout – By setting a time longer than the time required for queue processing, it is possible to process the queue if queue processing fails.
Delivery Delay – By setting delivery delay one can open intervals until queue is registered after queue is registered in SQS.
Dead Letter Queue – By setting Dead Letter Queue, one can move queues that have been left behind n times to another queue. It is possible to rotate the batch once again for the moving queue or use it to investigate the cause.
Advantages of Amazon Simple Queue Service
- Elimination of management overhead
- Reliable message delivery
- Protection of confidential data
- Stretchable Scale
AWS Lambda supports Amazon Simple Queue Service
Amazon has announced updates for the Simple Queue Service. Developers can invoke AWS Lambda functions using SQS messages. In addition, developers no longer need to run message polling services or to create SQS to SNS mappings. AWS Lambda is a computing service that enables developers to execute code without provisioning or managing servers. This service has evolved over the last four years as Amazon adds features and supports SQS. In other words, developers can use the queuing service as a direct event source for Lambda to trigger functions. Currently, the Lambda trigger operates only on the standard queue.