Miniflare

Miniflare is a local simulator and emulator for Cloudflare Workers. It provides a serverless runtime environment on a local machine, allowing for the development and testing of functions and edge APIs without deploying to a production cloud environment.

The project implements a local simulation of edge storage primitives, including key-value stores, object storage, and durable objects. It further enables a local integration test bed where serverless functions are executed within isolated sandboxes.

The toolset covers a broad development surface, including hot-reloading via file-system monitoring, local state persistence for storage bindings, and the management of environment secrets. It also supports automated integration testing with state-isolated containers to prevent data leakage between test cases.

Features

Edge Function Development Tools - Provides a comprehensive local environment for developing and testing Cloudflare Workers without deploying to the edge.
Serverless Runtime Emulation - Provides a local emulator for serverless runtimes and edge APIs to enable offline development and testing.
Serverless Storage Bindings - Simulates serverless storage bindings and relational databases to persist data during local development.
Edge Data Persistence - Provides a local implementation of SQL, key-value, and object storage to mimic edge data persistence.

floci-io/floci

14,168View on GitHub

Floci is a local emulator for AWS services and cloud infrastructure designed for developing and testing applications without a live internet connection. It serves as a containerized cloud emulator and a serverless runtime emulator, allowing users to run high-fidelity replicas of cloud databases, queues, and compute services on a local machine. The project distinguishes itself by using real container images instead of simple mocks to ensure behavioral accuracy. It functions as a local API gateway simulator with proxy-based routing for REST and WebSocket APIs, and provides a serverless environm

dherault/serverless-offline

5,257View on GitHub

serverless-offline is a Serverless Framework plugin that provides a local cloud infrastructure simulator. It acts as an AWS Lambda local emulator and AWS API Gateway mock, allowing for the development and testing of serverless functions on a local machine without deploying to a remote provider. The project distinguishes itself by simulating bidirectional WebSocket connections and message routing, as well as mimicking the request lifecycle of an HTTP gateway. It includes a mock identity authorizer pipeline to verify tokens and JWTs locally and supports the mounting of virtual dependency layers

aws/aws-lambda-runtime-interface-emulator

1,128View on GitHub

The AWS Lambda Runtime Interface Emulator is a proxy server designed to replicate the cloud-based serverless execution environment within a local container. It functions as a lightweight interface that allows developers to verify function logic, performance, and API integration by simulating the remote control plane and event invocation model on a local machine. The tool operates by intercepting HTTP requests and translating them into the structured JSON event payloads expected by serverless function handlers. It manages the function lifecycle through a synchronous event loop and maps local c

lambci/docker-lambda

5,786View on GitHub

docker-lambda is a Docker-based serverless simulator and local emulator designed to replicate AWS Lambda runtime environments. It provides a system for executing serverless functions locally and mirroring cloud execution environments through containerized images. The project includes a local API server that allows for function invocation via HTTP to eliminate cold starts during testing. It features a build tool for compiling native dependencies and packaging function code into deployment archives using specialized system images. The environment supports mirroring shared dependency layers by

cloudflareminiflareArchived

Features