Presentation: Introducing Riak and Ripple
A presentation by Sean Cribbs (@seancribbs) on Riak and the Ripple Ruby client library. Together with Kevin Smith’s Introduction to Riak you should get a pretty good idea of Riak strenght.
My notes:
Mythbusting “scalability”
- Scalability is not a yes/no question
- It’s a ration of benefit to cost
- Benefits: low latency, throughput, uptime, concurrency, reliability
- Costs: CPU, RAM, disk, bandwidth, power, hw/sw
- scalability = bang for your buck (ROI)
What is Riak?
(the horizontal scaling bits)
- Based on Amazon’s Dynamo (2007)
- key-value storage
- masterless, peer-to-peer replication
- consistent hashing
- eventual consistency
- failover - quorums, hinted handoff
What is Riak?
(the document database bits)
- store your objects as JSON (or any format)
- link between objects (like hypertext)
- No SQL - query with Javascript Map-Reduce
What is Riak?
(the ops-friendly bits)
- web-shaped storage
- store data in its original format
- it’s just HTTP - same techniques apply
- load balancing, proxy caches, round-robin DNS
- no node is special - grow horizontally
- get some sleep, fix it in the morning
Other topics covered:
- CRUD in Riak (slide 74)
- Links (slide 80) and link-walking (slide 83)
- Riak Map-Reduce (slide 93)
- Ripple (slide 132)
