Provisioned Concurrency
A feature in AWS Lambda that allows users to pre-allocate a specific number of execution environments for their functions.
Description
Provisioned Concurrency is an AWS Lambda feature that ensures your serverless applications have the necessary resources to handle incoming traffic without latency. Traditionally, AWS Lambda functions experience cold starts, where the function must be initialized before responding to requests, leading to unpredictable delays. With Provisioned Concurrency, developers can reserve a certain number of execution environments that are always warm and ready to respond immediately. This is particularly useful for applications with consistent and predictable traffic patterns, such as APIs or interactive web applications. By configuring Provisioned Concurrency, users can improve performance and enhance user experience during peak usage times. This capability can be integrated with AWS Auto Scaling to dynamically adjust the number of provisioned instances based on traffic, ensuring optimal performance while managing costs effectively.
Examples
- A financial services application uses Provisioned Concurrency to ensure that its transaction processing API responds instantly during high-volume trading hours.
- An online gaming platform employs Provisioned Concurrency to maintain low latency interactions during peak gaming events, enhancing player experience.
Additional Information
- Provisioned Concurrency can be configured via AWS Management Console, AWS CLI, or through infrastructure as code tools like AWS CloudFormation.
- Pricing for Provisioned Concurrency is based on the amount of concurrency provisioned and the duration it is active, allowing for cost-effective scaling.