AWS Lambda and API Gateway Basics - Build Serverless website

Start Date: 01/24/2021

Course Type: Common Course

Course Link: https://www.coursera.org/learn/aws-lambda-and-api-gateway-basics-build-serverless-website

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AWS Lambda AWS Lambda was originally designed for use cases such as image upload, responding to website clicks or reacting to sensor readings from an IoT connected device. AWS Lambda can also be used to automatically provision back-end services triggered by custom HTTP requests, and "spin down" such services when not in use, to save resources. These custom HTTP requests are configured in AWS API Gateway, which can also handle authentication and authorization in conjunction with AWS Cognito.
Serverless Framework The Serverless Framework is a free and open-source web framework written using Node.js. Serverless is the first framework for building applications exclusively on AWS Lambda, a serverless computing platform provided by Amazon as a part of the Amazon Web Services. A Serverless app can simply be a couple of lambda functions to accomplish some tasks, or an entire back-end composed of hundreds of lambda functions. Serverless currently supports Node.js and Python runtimes. Support for Java and other runtimes for AWS Lambda will be coming soon. Serverless is developed by Austen Collins and maintained by a full-time team.
AWS Lambda AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of the Amazon Web Services. It is a compute service that runs code in response to events and automatically manages the compute resources required by that code. It was introduced in 2014.
AWS Lambda Unlike Amazon EC2, which is priced by the hour, AWS Lambda is metered in increments of 100 milliseconds. Usage amounts below a documented threshold fall within the AWS Lambda free tier - which does not expire 12 months after account signup, unlike the free tier for some AWS services.
AWS Lambda AWS Lambda supports securely running native Linux executables via calling out from a supported runtime such as Node.js. For example, Haskell code can be run on Lambda.
AWS Lambda The purpose of Lambda, as compared to AWS EC2, is to simplify building smaller, on-demand applications that are responsive to events and new information. AWS targets starting a Lambda instance within milliseconds of an event. Node.js, Python, Java and C# through .NET Core are all officially supported , and other languages can be supported via call-outs. However, some runtimes, such as the Java Virtual Machine, may be slower than others to start.
Serverless computing The first 'pay as you go' code execution platform where developers simply wrote code online including billing at a functional level, creation of virtual resources by the system as needed, exposure of functions as APIs was Zimki in 2006. AWS Lambda, introduced by Amazon in November 2014, was the first major provider considered to have a serverless offering. AWS Lambda initially launched with Node.js as the only runtime, but it now officially supports Python, Java, C# and other languages such as Haskell can also be used by using Node.js as an invoker.
Serverless computing Diagnosing performance or excessive resource usage problems with serverless code may be more difficult than with traditional server code, because although entire functions can be timed, there is typically no ability to dig into more detail by attaching profilers, debuggers or APM tools. Furthermore, the environment in which the code runs is typically not open source, so its performance characteristics cannot be precisely replicated in a local environment. However, Amazon plans to provide AWS Lambda support in its APM and tracing technology called AWS X-Ray.
Serverless computing Serverless code can either be triggered by specific events (such as user registration with Amazon Cognito), or be configured to run behind an API management platform in order to expose it as a REST API endpoint.
Serverless computing In serverless computing, the units of code exposed to the outside world are simple functions. For example, in AWS Lambda, they are essentially functions that both consume and produce JSON, although they can make calls to other APIs, and the JSON may be automatically serialized from and deserialized to data structures at the option of the programmer. This means that typically, the programmer does not have to worry about multithreading or directly handling HTTP requests in their code, simplifying the task of back-end software development.
Serverless computing Serverless code can be used in conjunction with code written in traditional server style, such as microservices. For example, part of a web application could be written as microservices and another part could be written as serverless code. Alternatively, an application could be written that uses no provisioned servers at all, being completely serverless.
Serverless computing Google has released an alpha version of its serverless platform, which is called Google Cloud Functions, and supports Node.js.
IBM API Management An environment consists of a management server (with management console and developer portal) and an API gateway. Plans published to an environment can be visible in the developer portal, enabling developers to sign up to plans and use the APIs contain within. API business owners can customize their developer portal with their branding to advertise, market, socialize and sell APIs. Plans published to an environment can be invoked on the API gateway, delegating to the API gateway responsibility for rate limits, rejecting unknown users and scalability. The API Gateway is one or more IBM DataPower Gateway devices.
Barbie Basics The Barbie Basics was the first doll line (and retail product) to bear the logo of the CFDA (Council of Fashion Designers of America) on their boxes. The line was officially approved by the CFDA and several of its members have even quoted about the line in the official Barbie Basics website.
IBM API Management The API gateway collects invocation metrics which are available for analysis in the developer portal and API Manager user interfaces. Example metrics collected are API usage, success and failures.
Banu Aws The Banū Aws (  , "Sons of Aws") or simply Aws (; also Romanized as Aus) was one of the main Arab tribes of Medina. The other was Khazraj, and the two, constituted the Ansar ("helpers [of Muhammad]") after the Hijra.
Serverless computing In addition, a serverless architecture means that developers and operations specialists do not need to spend time setting up and tuning autoscaling policies or systems; the cloud provider is responsible for ensuring that the capacity meets the demand.
Buddy (software) Amazon S3, Amazon EC2, AWS Elastic Beanstalk, AWS CodeDeploy, AWS Lambda
The Gateway (newspaper) The "Gateway" launched a new website, The "Gateway" Online, on 27 February 2007.
Banu Aws The word "al-Aws" means "the gift", probably a contraction for "Aws Manāt" (, "the gift of Manāt"). The name was changed in Islamic times to "Aws Allāh" ().