Скачать или смотреть Lambda Versions and Aliases

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AWS Lambda is a serverless computing service that allows you to run your code without provisioning or managing servers. It's a great option for building highly scalable and cost-effective applications.

📌 Timestamps
0:00 - Introduction
0:08 - What Are Lambda Versions?
0:48 - Publishing Lambda Versions
1:38 - Qualified vs. Unqualified ARNs
2:21 - Introduction to Lambda Aliases
3:01 - Alias Configuration and Traffic Splitting
3:52 - Console Walkthrough: Creating an Alias
4:17 - Benefits of Using Aliases

Lambda versions are a way to manage different versions of your Lambda function code. Each version is identified by a unique version number, which is an integer value. When you create a new version of your Lambda function, AWS makes a snapshot of the code and configuration at that point in time. This allows you to make changes to your code without affecting the existing versions of your function.

One of the benefits of using Lambda versions is that you can easily roll back to a previous version if you encounter any issues with your latest code. This can be especially useful when you're dealing with production applications and need to quickly revert to a working version.

Aliases are another powerful feature of AWS Lambda. Aliases are pointers to a specific version of your Lambda function. You can create multiple aliases for the same Lambda function, each pointing to a different version. This allows you to use the same function for different purposes or environments, such as testing, staging, or production.

One of the benefits of using aliases is that you can deploy new versions of your function without changing the alias. For example, you might have an alias called "prod" that points to the latest production version of your function. When you deploy a new version of your function, you can test it using a different alias, such as "test", without affecting your production environment.

Another benefit of using aliases is that you can use them to implement a blue-green deployment strategy. In this approach, you create two aliases, one for the current production version and another for the new version you want to deploy. You then gradually shift traffic from the old alias to the new alias, until all traffic is going to the new version. This allows you to deploy updates without downtime or affecting your users.
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