µrt

µrt is a custom AWS Lambda runtime for C++ applications.

Features

• Single-digit millisecond cold starts, no dynamic memory allocations
• One header file, no third-party dependencies

Installation

Add the header file to your project by hand or install via CMake.

cmake_minimum_required(VERSION 3.22.2)
project(example)
set(CMAKE_CXX_STANDARD 17)

include(FetchContent)
FetchContent_Declare(
        urt
        GIT_REPOSITORY https://github.com/vassbence/urt.git
        GIT_TAG v0.3.0
)
FetchContent_MakeAvailable(urt)

add_executable(${PROJECT_NAME} "main.cpp")
target_link_libraries(${PROJECT_NAME} PRIVATE urt)

Usage

#include <urt.h>

int main() {
  urt::run([](std::string_view event) {
    return "{\"message:\":\"hello, world!\"}";
  });
}

See the example folder in the repository for a complete implementation.

Deployment to AWS

Follow the official deployment guide from AWS. Use the provided.al2023 runtime and name your compiled executable bootstrap.

License

MIT license