lelylan 0,0,-1,1,1,1,0,0

Open Source Lightweight Microservices Architecture for the Internet of Things. For developers.

Lelylan. Open Source Internet of Things

Lelylan is an IoT cloud platform based on a lightweight microservices architecture.

The Lelylan platform is both hardware-agnostic and platform-agnostic. This means that you can connect any hardware, from the ESP8266 to the most professional embedded hardware solution and everything in between - and it can run on any public cloud, your own private datacenter, or even in a hybrid environment, whether virtualized or bare metal.

Lelylan Logo


This repository defines the architecture documentation. Check out the microservices list for the code implementation.

Why Lelylan

Research in the Internet of Things is global and growing fast, but lacks the standard tools. Many companies are building their own solutions. By sharing what we have learned during the years, we want to create a shared code base with a clear focus on developers. To see Lelylan in action checkout the tutorials in the dev center.


Getting Started


Lelylan is tested against

  • Ruby MRI ~1.9.3
  • Node ~0.8.8
  • MongoDB ~2.6
  • Redis ~2.6

(remember to run the mongod and redis-server)




Lelylan is composed by different microservices. Follow the installation guidelines for each of them.

Microservice Description
API Proxy Proxy API
Devices API Device monitoring and control
Types API Device type structure
Subscriptions API Realtime subscription
Profiles API Profile information
OAuth 2.0 User authentication and authorization
Physical Proxy Forward requests to the physical world
MQTT Node Forward and receive MQTT requests
MQTT Server MQTT server/broker
Webhooks Realtime HTTP notification
Websockets Full-duplex communication over TCP

You can now access the APIs) from (API proxy URL).


During deployment, every microservice needs to be set to the following environment variables (remember to change them with your own microservices, mongodb, redis and cache URLs).

Environment Variable Description
RACK_ENV=production Production rack environment
RAILS_ENV=production Production rails environment
NODE_ENV=production Production node environment
LELYLAN_PEOPLE_URL=people.lelylan.com OAuth 2.0 microservice URL
LELYLAN_DEVICES_URL=devices.lelylan.com Devices API microservice URL
LELYLAN_TYPES_URL=types.lelylan.com Types API microservice URL
LELYLAN_SUBSCRIPTIONS_URL=subscriptions.lelylan.com Subs. API microservice URL
LELYLAN_PROFILES_URL=profiles.lelylan.com Profiles API microservice URL
MONGOLAB_PEOPLE_URL=mongodb://<user>:<pass>@<host>:<port>/<name> OAuth 2.0 MongoDB URL
MONGOLAB_DEVICES_URL=mongodb://<user>:<pass>@<host>:<port>/<name> Devices API MongoDB URL
MONGOLAB_TYPES_URL=mongodb://<user>:<pass>@<host>:<port>/<name> Types API MongoDB URL
MONGOLAB_JOBS_URL=mongodb://<user>:<pass>@<host>:<port>/<name> Event Bus MongoDB URL
MONGOLAB_SUBSCRIPTIONS_URL=mongodb://<user>:<pass>@<host>:<port>/<name> Subs. MongoDB URL
MEMCACHIER_SERVERS=<host>:<port> Cache server
MEMCACHIER_USERNAME=<username> Cache server username
MEMCACHIER_PASSWORD=<password> Cache server password
REDIS_URL Background Job Redis URL
REDIS_RATE_LIMIT_URL=redis://<user>:<pass>@<host>:<port>/ Late Limit Redis URL

We are studying solutions such as Docker, Mesos, and Ansible to simplify the installation process. If you are experimenting in the same area get in touch with lelylan team.


The Roadmap provides the description of the items that the project has decided to concentrate on. It should serve as a reference point for Lelylan contributors to understand where the project is going, and helps to determine whether a contribution could be conflicting considering the future goals.

The fact that a feature isn’t listed here doesn’t mean that a patch for it will automatically be refused (we also miss important things). We are always happy to receive patches for new cool features that we haven’t thought about, or didn’t consider as a priority. Nevertheless understand that such patches might take longer for us to review.

Checkout the roadmap to see our near future goals.

Contributing to Lelylan

This Contributing document tries to define a contributor’s guide explaining how to contribute to one or more Lelylan Microservice. It contains information about reporting issues as well as some useful tips and guidelines for experienced open source contributors.

Checkout the contributing to help us with Lelylan.


Use the available communication channels to communicate your ideas, problems or suggestions.


Lelylan is licensed under the Apache License, Version 2.0.

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