Video 3.3 introducing Amazon Sq s. In this video, they will learn the following what is Sq s? vida we use Sq s creating a Q testing Sq s? What is this Q s. Hopefully, everybody now knows that SQL stands for simple queue service. As the name suggests, it is a web service that helps us to create a message queue which will temporarily store messages that await processing. Let's look at a more structured definition. Amazon Sq S is a distributed queue system that enables web service applications to quickly and reliably queue messages that one component in the application generates to be consumed by another component where a queue is a temporary repository for messages.
It is basically a buffer between the component producing and the component In receiving the data first processing, a cure resolves issues that arise if the producer is producing work faster than the consumer, which is processing the messages, or if the producer or consumer is only intermittently connected to the network. Now, let's look at the two types of queue, a standard queue and fo queue. Standard queue excuse offers a standard queue as the default queue type. This queue type allows us to have an unlimited number of transactions per second. It also guarantees that a message will be delivered at least once. However, in rare cases, more than one copy of a message might be delivered.
Generally, the standard queues will put maximum effort to maintain and deliver the messages in the correct order, but it does not provide a guarantee. For cure queue. The FIFO queue has all the capabilities of the standard But FIFO queues are generally limited to 300 transactions per second. The most important feature of this queue is it sends messages exactly once FIFO queue doesn't allow duplicates to be introduced into the queue. The main advantage of FIFO is it guarantees that the messages are delivered in the right order via we use Sq s. In our project, we need to turn on the LED connected to Raspberry Pi at some fixed time every day. For example, we will turn on the LED every day at 10am.
Generally, with the help of SQL, you can send store and receive messages between various applications without losing messages. For this project, we will create a queue that will receive and temporarily store a message at 10am everyday. Vishal then write a Python code on raspberry pi, which will repeatedly check that queue for messages when it finds message it will turn on the LED and also it will delete the message in the queue. Since the action has been completed creating a queue creating an Amazon Sq Sq is very straightforward in AWS Management Console, search for Sq s, simple queue service selected now, we will select Get started now create new queue. Here, you can give any name for the queue, I will give my ESP 32 underscore Q, check the region in which the queue is being created. It's not Virginia.
Next, I will be sticking to the default standard queue. Choosing quick create queue. Once the queue is created, you can find the URL an errand here. Now, since we did not start sending any message, we will have an empty queue you Let's see how to check the Q. Testing Sq s. Here. On the top, you can find q actions.
Now, we will select, view or delete messages. Select polling for messages. Amazon Sq s uses polling to determine whether any messages are available from its servers. Since we are not sending messages, it will check for 30 seconds and doesn't show up any message. For now. I will end this video here.
In this video, we learned the following. What is SQL? Why do we use SQL is creating aq testing Sq s. In the next video, we will learn about cloud watch events