AWS Lambda: Cold Start Duration per Language

The following chart shows the typical range of cold starts in AWS Lambda, broken down per language. The darker ranges are the most common 67% of durations, and lighter ranges include 95%.

Typical cold start durations per language

The charts below give the distribution of cold start durations per supported programming language. All charts have the same horizontal scale (0.0-1.2 sec) to make them easily comparable.

JavaScript:

Cold start durations of AWS Lambda in JavaScript

Python:

Cold start durations of AWS Lambda in Python

Java:

Cold start durations of AWS Lambda in Java

Go:

Cold start durations of AWS Lambda in Go

Ruby:

Cold start durations of AWS Lambda in Ruby

C# (notice that the scale of X axis is different from the other charts):

Cold start durations of AWS Lambda in C# (2 GB RAM)

Go back to Cold Starts in AWS Lambda.