Introduction To AWS Lambda

Introduction To AWS Lambda

AWS Lambda is the new computing system that offers a variety of benefits like real-time data processing and custom back-end service. With so much information available about AWS Lambda, it can be hard to know what it is without an introduction.

Here’s a breakdown of introduction in the form of frequently asked questions about this system, to help a person to determine if it’s the right option or not.

1- What is AWS Lambda?

AWS Lambda is an Amazon serverless computing system that runs code and automatically manages the underlying computing resources. It lets a person automatically run code in response to many types of events, such as HTTP requests from Amazon API gateway, table updates in Amazon DynamoDB, and state transitions. It also enables the person to extend to other AWS services with custom logic, and even create its own back-end services.

The service works by running code on a high-availability computer infrastructure. It then performs all the administrative duties of that compute resource, like: providing maintenance on server and operating system,automatically scaling and managing the person’s capacity provisions,handling security patch deploymentcode monitoringlogging The only work required on the user’s end is supplying code for it to run.

2 - How Does AWS Lambda Work?

While AWS Lambda may seem confusing at first, it really isn’t. In fact, it’s actually just a simple process: Start off by uploading the code to AWS Lambda.From there, set up the code to trigger from other AWS services, HTTP endpoints, or mobile apps. AWS Lambda will only run the code when it’s triggered and will also only use the computing resources needed to run it. The user have to pay only for the compute time used.## 3 - What are the Advantages of AWS Lambda?

AWS Lambda offers a variety of benefits to its users. Here are 3 of the biggest benefits one should know about when deciding if AWS Lambda is right choice: It doesn’t require the user to manage any servers. Since AWS Lambda automatically runs user’s code, there’s no need for the user to manage the server. Simply write the code and upload it to Lambda.It empowers the user to easily scale. AWS Lambda runs code in response to each trigger, so user’s application is automatically scaled. The code also runs in parallel processes, each triggered individually, so scaling is done precisely with the size of the workload.It’s affordable. With AWS Lambda, one doesn’t pay anything when code isn’t running. The user has to only be charged for every 100ms of code execution and the number of times his code is actually triggered.## 4 - What Can You Build with AWS Lambda?

AWS Lambda can build a variety of things. Here’s a quick list of just a few use cases for it: Data processingReal-time file processingData validationFilteringSortingReal-time stream processing3rd-party API requests## 5 - How Much Does AWS Lambda Cost?

As previously mentioned, with AWS Lambda user only pays for what he uses, factoring in the number of requests and duration of the execution of the code. Lambda considers a request to be each time it starts executing in response to a trigger such as an event notification or an invocation volume.

The duration of the code is calculated from the moment the code begins executing until it returns or is terminated.

If one is unsure about whether AWS Lambda is right choice or not, there is a free tier option available to try. This option includes 1M free requests per month, and 400,000 GB-seconds of compute time per month.


To learn more about AWS Lambda, check out Amazon’s handy AWS Lambda FAQ

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