1. Emitter: Scalable, fast and secure pub/sub in Go
This is a draft presentation. It will be improved for the actual lightning talk presentation.
Emitter: Scalable, fast and secure pub/sub in Go
Emitter.io

2. Content Communication challenge Solution API Use cases Specs
SDKs and platform support

3. Messaging challenge
Suppose Alice wants to send Bob a message, but Bob is offline.
Message is stored on server
How to avoid message from getting lost when server is down?
Have 2 or more servers store the same message
What to do if the maximum server capacity is reached (bandwith or storage capacity)?
Have multiple servers with load balancing
Scale up and down depending on traffic
How do Alice and Bob and the servers know who to communicate with?
Intelligent communication system
Alice
Bob

4. Messaging challenge
Online communication might seem simple at first sight, but….
You might need a complex back-end messaging system with:
Load balancing
Storage
Inter-server communication system
Automatic scaling
etc etc

5. Messaging challenge The same challenges occur in: IoT Web applications
Online gaming
Wouldn’t it be nice if there would be an off-the-shelf solution for all these use cases?

6. Solution
A possible solution to this challenge is Emitter Pub/Sub:

7. API Subscriber Publisher Publisher Broker Subscriber ChannelX ChannelX

8. Use case 1
Chat

9. Use case 2
Pressure and temperature sensors in furnaces of crematorium: passing on data to central dashboard

10. Optimized garbage disposal system
Use case 3
Optimized garbage disposal system

11. Use case 4
Online game

12. Stocks and user notifications at certain events
Use case 5
Stocks and user notifications at certain events

13. Use case 6
Twitter live stream

14. Emitter Open source Free Horizontally scalable You can tune it
You need server(s)
Emitter Cloud
Pay per usage
No need for servers
Fewer things to worry about

15. Emitter
Scalable: Built to handle millions of messages per second and to scale horizontally.
Fast: Designed to ensure reliable, speed-of-light message delivery and high throughput.
Secure: Supports TLS encryption, binary messages, expirable channel keys and permissions.
Persistent: Messages can be stored for a period of time and sent to subscribers on demand.
Light weight: Uses standard MQTT protocol, little overload, low battery usage
Easy to use: Simple API, supports message filtering, binary (supports all data types)

16. Emitter SDK’s for Java Javascript Typescript .Net / C# GO C/C++ Python
Platform support
NodeJS
Netduino

17. Emitter.io