Building a Mobile Data Platform with Cassandra - Apigee Under the Hood (Webcast)
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The document discusses Usergrid, an open source mobile backend platform built on Apache Cassandra. It provides capabilities like API management, analytics, and tools. Usergrid allows building mobile and rich client apps without needing a web stack. It highlights key features like being platform agnostic, flexible data modeling, and multi-tenancy using virtual keyspaces in Cassandra. The document also discusses how Usergrid implements shared schemas and keyspaces in Cassandra to provide isolation and scale for multiple teams and applications.
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Building a Mobile Data Platform with Cassandra - Apigee Under the Hood (Webcast)
- 1. Usergrid Open Source Mobile Backend on Cassandra
- 2. Hi I m Ed Anuff
- 3. API Management API Analytics API Tools
- 4. Usergrid Backend-as-a- Service & Open Source Mobile and Rich client apps
- 5. App, Cloud, & HTTP
- 6. No Web Stack Page Templates MVC Logic Database
- 7. Just Apps and APIs
- 8. Key Capabilities A platform not a single app Flexible data model Easy to use from any language
- 9. Why should Cassandra developers care about Usergrid?
- 10. Open Source (APLv2) Built on Hector Multi-tenant (Virtual Keyspaces) JSON and full-text indexing Rich permissions model REST API
- 12. Lots of Teams... Team Team Team
- 13. Lots of Apps... App App App Team
- 14. And App Users... App Team
- 15. And data and devices App Team
- 16. Multi-tenancy at scale App App App App App App Team Team Team
- 17. Schema Separate Database Shared Database Shared - Scalability + Scalability + Isolation - No Isolation + Simple - Complicated Separate Schema - Scalability - Scalability + Isolation - No Isolation + Not Complicated - Complicated
- 18. CREATE DATABASE ALTER TABLE
- 19. Sharding SQL is too much work. Oracle is too much money.
- 20. What about NoSQL? Most NoSQL works at the wrong abstraction level.
- 21. Does Cassandra provide any more options? Sort of
- 22. Schema Separate Keyspace Shared Keyspace Shared Expensive Interesting Separate Schema Very Unwieldy Expensive
- 23. How would Shared Schema/Shared Keyspace work?
- 24. Users = { "4e3c0423-…" : { username: "edanuff", email: "ed@anuff.com", … : … }, "e5d61f2b-…" : { username: "jdoe", email: "john.doe@gmail.com", … : … } }
- 25. Users = { "4e3c0423-…" : { username: "edanuff", email: "ed@anuff.com", … : … }, "e5d61f2b-…" : { username: "jdoe", email: "john.doe@gmail.com", … : … } }
- 26. Conventional Row Keys In Single Keyspace Row UUID Row UUID Row UUID Row UUID Row UUID Row UUID
- 27. Multi-tenant Row Keys In Shared Keyspace Tenant ID Row UUID Tenant ID Row UUID Tenant ID Row UUID Tenant ID Row UUID Tenant ID Row UUID Tenant ID Row UUID
- 28. Wonderful, more things for me to build myself in the app tier... Hold that thought...
- 29. Shared Schema/ Shared Keyspace is Virtual Keyspaces Part of Hector Client
- 30. public static <E> Keyspace createVirtualKeyspace( String keyspace, E keyPrefix, Serializer<E> kps, Cluster cluster);
- 31. Hector hides the Tenant Prefixes Prepend Tenant UUID Hector Cassandra Remove Tenant UUID
- 32. What about indexes? Hector doesn t filter results Don t add a tenant column App-tier CF indexes preferable
- 33. What about CQL? See previous slide for index limitations Hector doesn t currently support Virtual Keyspaces via CQL I don t actually ever use CQL
- 34. So what else is in there?
- 35. JSON Full JSON values, fully indexed, using Jackson and stuff from Lucene
- 36. Permissions Fine grained, per user, built on Shiro
- 37. REST Full REST API, built on Jersey
- 38. Anything else?
- 39. Mongo Compatible API Experimental Mongo API emulation via Netty Mongo binary wire
- 40. That s what Usergrid is.
- 41. Use the ideas Use the code Use the cloud