By Selman Karaosmanoglu

Date created

8 July 2024

Rust Cargo-Lambda Deployment on AWS Lambda Serverless

Overview

This repository provides a guide for deploying a Rust-based AWS Lambda function on AWS Lambda utilizing Cargo-Lambda Rust library

Architecture

flowchart LR;
    A((HTTPS invoke)) <-.-> B((AWS Lambda λ));
    B <--> C[main.rs];

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Key Advantages of Rust for AWS Lambda

• Memory Efficiency: Rust uses significantly less memory compared to Python. This is because Rust is a compiled language with efficient memory management, while Python is an interpreted language with higher memory overhead.
• Performance: Rust offers substantial performance improvements over Python, often ranging from 10 to 1000 times faster, depending on the task.
• Deployment: Rust enables small binary deployments. By optimizing for size, Rust binaries can be significantly smaller than those of other languages.
• Cost Efficiency: Building on ARM architecture can be up to 34% cheaper, especially with processors like Amazon’s Graviton.
• Energy Efficiency: Rust is highly energy-efficient, often comparable to C, and significantly more efficient than languages like Python.
• Fast Response Times: Rust can achieve very low response times, often as low as 2 milliseconds, due to its efficient execution and low-level control.

Getting Started

Install Rust

If you don't have Rust on your system install rust using https://rustup.rs

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Install Cargo lambda

Cargo Lambda simplifies running, building, and deploying Rust functions on AWS Lambda without needing containers or VMs.

brew tap cargo-lambda/cargo-lambda
brew install cargo-lambda

For more information or other installation information on Cargo Lambda: https://www.cargo-lambda.info/guide/getting-started.html

AWS CLI

Make sure AWS CLI installed and configured.

If not, you can install with pip

pip install awscli

Configure AWS

aws configure

Testing locally

Run the Rust app locally

make watch

Test locally

make invoke

Deploy to AWS

make build && make deploy

Test deployed app

make aws-invoke

Lambda Function Summary

Reference

• Rust AWS Lambda - O'Reiily