Posted On: Jun 5, 2024

Starting today, Amazon Lambda functions now scale up to 12x faster than before in response to unpredictable traffic in the Amazon Web Services China regions. With this improvement each function can scale up to a rate of 1,000 concurrent executions every 10 seconds, up to your account concurrency limit.

Workloads such as SLA-bound data processing or web applications with request-response patterns require high scalability and are prone to frequent changes in traffic. Previously, Lambda’s scaling was at the account level, enabling customers to scale by up to 500 concurrent executions every minute. Today’s launch enables more rapid, granular scaling of individual Lambda functions, benefiting workloads that need to absorb traffic fluctuations, all without affecting the scaling rate of any other functions in your account.

This feature is available in Amazon Web Services China (Beijing) Region, operated by Sinnet, and Amazon Web Services China (Ningxia) Region, operated by NWCD. The new scaling experience is enabled by default for all functions that are invoked synchronously, at no additional cost.

You can set a limit on your function’s scalability by configuring Reserved Concurrency on your function. To learn more about Amazon Lambda’s new function scaling capabilities, visit the Lambda scaling behavior documentation page.