![]() SQS Message Retention Period is a vital configuration that we need to understand before designing our solution. It’s possible to configure that limit to a lower value than 256 but not higher. Therefore, we only need to pay attention to the limitation of 256 kilobytes for the whole message. Also, the message could be a text in any format. There is a hard limit, and, by default, we can publish a message up to 256 kilobytes. But be aware that there are more configurations out of the list, but the ones mentioned below are enough if you plan to prepare for the AWS exam or start using SQS. However, there are many configurations that we must be aware of and guarantee that the queue is working correctly. The SQS is an uncomplicated service, as the name suggests. So, it can connect to SQS and, obtain that data, recover that message whenever it’s prepared to read it. In an earlier article, LINK, we learned the best practice to create one EC2 instance reaching a load balancer and then requesting directly from the ELB to the EC2 or another resource.īut what do we need to do if we need a direct connection? For example, to compose a message and send it to that SQS queue, and then a backend server can retrieve it whenever it’s ready? This approach doesn’t require a faster process to react to that message arriving from a load balancer if it’s not prepared to receive that content. First, what does means the term asynchronous? It’s a genuinely critical idea to comprehend and will work a little bit differently than perhaps how we’re employed to communicate with our server. It’s a messaging queue that allows an asynchronous process of a job. So, we can consider SQS sort of like a postman putting a letter into the mailbox. In this process, a producer writes the messages, for example, a web page (frontend), and takes a message in, writes said the letter message into an existing SQS queue, later then the backend server (the consumer) can reach retrieve that message from the SQS queue whenever it’s ready. That is actually what poll-based messaging means. Then, whenever your family member feels prepared, they can go to the mailbox, pick up that letter, and read it. Later, the post office takes our letter and delivery it to the final destination mailbox. For example, you would like to mail a letter with a message to a family member, so after writing the message on the letter, we put a stamp on it and hand it off to the post office. We want to assume that poll-based messaging is a minor case. We explain FIFO and Dead-Letter Queue in the different articles to give you a clear understanding. ![]() If you are planning to discover and learn the differences between AWS SNS vs SQS, you can take advantage of this post. And finally, we will give you some exam tips. What different configurations do we have to adjust and create the SQS accurately? Then, we’ll look at a significantly deeper dive into one of those configurations, known as the visibility timeout, and how it controls the interchange and communication between our architecture and that messaging queue. First, before we begin learning about the SQS service itself, we need to comprehend a significant idea, and that is: What is poll-based messaging? Later, we’ll analyze SQS and how does this serve our architecture? Then, we will learn some additional configurations that we must understand in depth. This article will guide what Simple Queue Service (SQS) is. Let’s continue to learn how to decouple our applications. ![]()
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