What is a GB-second?

By Flavio Copes

Learn what a GB-second is in AWS Lambda, the metric that multiplies how long your function runs by the memory it uses to measure your serverless usage.

AWS Lambda measures your usage time with a metric called GB-second.

Every month you are given 1M free requests, and 400.000 GB-seconds.

GB-seconds are the number of seconds your function runs for, multiplied by the amount of RAM memory consumed.

It’s a computed metric, calculated by multiplying two other metrics, and it’s a reasonable way to measure how many resources your serverless functions consume, in relation to time and memory.

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