AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS) that allows users to build and run functions, self-contained programs written in one of the supported languages and runtimes, without worrying about server management. With Lambda, users can perform various computing operations, such as displaying web pages, processing data streams, calling APIs, and connecting with other AWS services.
Lambda enables developers to focus on writing application code, as serverless computing eliminates the need for administrative tasks like renting server resources, managing operating systems, and addressing security issues.
AWS manages the entire infrastructure layer for Lambda, automatically handling tasks like updating machines, minimizing network conflicts, and resolving other issues. This means that customers have limited visibility into how the system works but can spend more time focusing on their application code.
AWS Lambda uses a separate container for each function. When a function is created, Lambda packages it into a new container and runs that container on a multi-tenant cluster of servers managed by AWS. Each function's container is allocated the required amount of RAM and CPU power before the functions begin to execute. Users are then charged based on the memory allocated and the duration of each function execution.
One of Lambda's unique architectural features is its ability to execute multiple instances of the same function or different functions from the same AWS account. Lambda is unaffected by fluctuations in frequency due to time of day or day of the week, allowing users to only pay for the compute power their functions require. This makes AWS Lambda an excellent fit for building highly scalable cloud computing solutions.
AWS Lambda is ideal for a variety of use cases, including:
AWS Lambda supports multiple languages and runtimes, including Node.js, Python, Ruby, Java, Go, C#, and PowerShell Core. By using the SDKs provided by AWS for each of the supported languages, you can easily develop Lambda functions and integrate them with other AWS services.
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