Engine

Distributed identifier generation service

Components

• Engine
• Supplier
• Controller
• Generator

Engine

• Tornado powered web-server which returns next set of IDs to fetch and current system stats

Supplier

• Keeps an eye on the storage system using distributed locking
• Returns state of the system and storage
• Collect perpared set of IDs from storage and pass it to 'Engine' on demand
• Invokes 'controller' when 'master' storage is in 'caution' state

Controller

• Shift main system storage between 'master' and 'slave'
• Insert data from 'generator' into 'slave' storage on demand

Generator

• Generate non-sequential identifiers of fixed-length
• Uses a little Group Theory and properties of Anagrams

Storage

• RethinkDB