zendesk/persistence — pull request #5 by vanchi-zendesk (2014-10-09 17:51:22+00:00)
Title: RADAR-403: Changes for stream resource

1. Moves code into lib folder
2. Adds a list abstraction
- every push will stamp the entry with an autoincrementing id
- options to read the list from the tailend from a given id, based on length, start id and end id
- Option to trim the list based on a max length
- publish any pushes to the same pubsub key
3. Adds a lock abstraction
- supports acquire/release and expiry after some fixed time
4. Adds an id generator abstraction
- Allocs incrementing ids
- For the duration of the callback, another id generation is blocked.

/cc @zendesk/zendesk-radar

### Steps to merge
- [ ] :+1: of the team

### References
- Jira link: https://zendesk.atlassian.net/browse/RADAR-403

### Risks
- Very low: None of the code is used, but watch for regression because of path changes.