Building a Mobile Data Platform with Cassandra - Apigee Under the Hood (Webcast)

Usergrid    Open SourceMobile Backend on Cassandra

Hi I m Ed Anuﬀ  

  API Management API Analytics API Tools

Usergrid  Backend-as-a-Service & Open Source  Mobile and Rich client apps 

App, Cloud, & HTTP

No Web Stack Page Templates MVC Logic Database

Just Apps and APIs

Key Capabilities  A platform not a single app Flexible data model Easy to use from anylanguage   

Why shouldCassandradevelopers careabout Usergrid? 

Open Source (APLv2) Built on Hector Multi-tenant (VirtualKeyspaces) JSON and full-text indexing Rich permissions model REST API  

Multi-tenant data forApps

Lots of Teams... Team Team Team

Lots of Apps... App App App Team

And App Users... App Team

And data anddevices App Team

Multi-tenancy atscaleApp App App App App App Team Team Team

Schema Separate Database Shared DatabaseShared - Scalability + Scalability + Isolation - No Isolation + Simple - ComplicatedSeparateSchema - Scalability - Scalability + Isolation - No Isolation + Not Complicated - Complicated

CREATE DATABASE ALTER TABLE

Sharding SQL is toomuch work.  Oracle is too muchmoney.

What about NoSQL?  Most NoSQL worksat the wrongabstraction level.

Does Cassandraprovide any moreoptions?  Sort of

Schema Separate Keyspace Shared KeyspaceShared Expensive InterestingSeparateSchema Very Unwieldy Expensive

How would SharedSchema/SharedKeyspace work?

Users = { "4e3c0423-…" : { username: "edanuff", email: "ed@anuff.com", … : … }, "e5d61f2b-…" : { username: "jdoe", email:"john.doe@gmail.com", … : … }}

Conventional Row Keys In Single Keyspace Row UUID Row UUID Row UUID Row UUID Row UUID Row UUID

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

Wonderful, morethings for me to buildmyself in the apptier...   Hold that thought...

Shared Schema/Shared Keyspace is Virtual Keyspaces   Part of Hector Client

public static <E> Keyspace createVirtualKeyspace( String keyspace, E keyPrefix, Serializer<E> kps, Cluster cluster);

Hector hides the Tenant Preﬁxes Prepend Tenant UUID Hector Cassandra Remove Tenant UUID

What about indexes?  Hector doesn t ﬁlterresults Don t add a tenant column App-tier CF indexespreferable 

What about CQL?  See previous slide for indexlimitations Hector doesn t currentlysupport Virtual Keyspaces viaCQL I don t actually ever use CQL

So what else is inthere?

JSON  Full JSON values,fully indexed, usingJackson and stuﬀfrom Lucene

Permissions  Fine grained, peruser, built on Shiro

REST  Full REST API, builton Jersey

Anything else?

Mongo CompatibleAPI  Experimental MongoAPI emulation viaNetty  Mongo binary wire

That s what Usergrid is.

Use the ideas Use the code Use the cloud

usergrid.com git.io/usergrid  Thanks!

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Building a Mobile Data Platform with Cassandra - Apigee Under the Hood (Webcast)

by Apigee on Aug 21, 2012

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Building a Mobile Data Platform with Cassandra - Apigee Under the Hood (Webcast) Presentation Transcript