bohconf

mongosf/index.md

@@ -0,0 +1,229 @@
+title: Activity Streams on Cloud Foundry with MongoDB and NodeJS
+
+!SLIDE
+
+<% left do %>
+<%= include "../shared/us/monica.md" %>
+<% end %>
+
+<% right do %>
+![main](/img/head2.jpg)
+<% end %>
+
+!SLIDE
+
+## Agenda
+
+### Overview of Cloud Foundry
+
+### What is Activity Streams ?
+
+### Building an Activity Stream Engine
+
+!SLIDE
+
+<%= include "../shared/intro_paas.md" %>
+
+!SLIDE
+
+<%= include "../shared/motivation/open_source.md" %>
+
+!SLIDE
+
+<%= include "../shared/vmc.md" %>
+
+!SLIDE vcenterH2
+
+## Why MongoDB ?
+
+!SLIDE
+
+## Data
+
+### Volumes are increasing 60% a year
+
+### Varies widely
+
+### Exchange done via messaging SOA
+
+!SLIDE
+
+## RDBMS technology is under duress
+
+### Sharding of data is external to the RDBMS
+
+### Traditional RDBMS scaling is vertical not horizontal
+
+### Database replication is expensive and difficult
+
+- Oracle RAC clustering is very expensive.
+- $70K/CPU according to list. Even at ½ the cost, it’s still really expensive to build out a horizontal data access grid.
+
+!SLIDE
+
+## Heterogeneous
+
+### ACID semantics are not needed for every use case
+
+### `BASE` semantics are a viable option
+
+### (`B`asically `A`vailable, `S`oft state, `E`ventually consistent)
+- Online Banking : `ACID`
+- Facebook Updates: `BASE`
+
+## Data has changed
+
+### Distributed applications mean distributed data
+
+### Consistency is relative
+
+!SLIDE
+
+## NoSQL means
+
+### Non-relational, next-generation operational datastores and databases
+
+### Focus on scalability
+
+### Ease of modeling and changing data
+
+!SLIDE vcenterH2
+
+## MongoDB
+
+!SLIDE
+
+## Stores JSON-style documents
+
+    { hello: “world” }
+
+### Represented as BSON
+
+    \x16\x00\x00\x00\x02hello\x00
+    \x06\x00\x00\x00world\x00\x00
+
+!SLIDE
+
+## Flexible Schemas
+
+    {
+    author: “mike”,
+    links: 3,
+    date: "Sun Jul 18 2010 14:40:20 GMT-0700 (PDT)"
+    text: “blah blah”
+    }
+
+    {
+    author: “eliot”,
+    date: "Sun Jul 18 2010 14:40:22 GMT-0700 (PDT)"
+    text: “Here is MongoDB ...”,
+    views: 10
+    }
+
+
+ `links: 3` vs `views: 10`
+
+!SLIDE
+
+## Embedded Document
+
+    {
+     _id: ObjectId("4d1009c7262bb4b94af1cea4")
+     author_id: “1346”,
+     date: "Sun Jul 18 2010 14:40:20 GMT-0700 (PDT)",
+     title: “my story”
+     text: “once upon a time ...”,
+     tags: [“novel”,”english”],
+     Comments:[
+     {user_id: 234, text: “awesome dude”},
+     {user_id: 1235, text: “that made me cry”}]
+    }
+
+!SLIDE vcenterH2
+
+## Little need for joins or transactions across documents
+
+!SLIDE
+
+## Horizontally scalable
+
+![main](/img/mongo-horizontal.png)
+
+!SLIDE
+
+## Full Indexing Support
+
+### Unique
+
+### Compound
+
+### Geo
+
+!SLIDE
+
+## BLOBs: GridFS
+
+### Main use case is Large Files
+
+### Just as easy to use as the File System
+
+### http://api.mongodb.org/ruby/current/file.GridFS.html
+
+!SLIDE
+
+## Replication & Sharding
+
+### Using Replica Set:
+
+- pool of servers with 1 master
+- automatic master election and failover
+- distributed reads (slaveOk)
+
+### Sharding
+
+- For large datasets,  or write heavy system
+
+![main](/img/mongo-shards.png)
+
+!SLIDE
+
+## Open Source
+
+- Great community
+
+## Many drivers
+
+- PHP, Java, Ruby, Erlang, Python, NodeJS
+
+## Object Relational Mappers too
+
+- Mongoose for NodeJS
+- Mongo Mapper and Mongoid for Ruby
+
+!SLIDE
+
+## MongoDB on Cloud Foundry
+
+### MongoDB version 1.8
+
+### Indexing and querying
+
+### As many collections as needed
+
+### GridFS Support
+
+### No replication or sharing currently
+
+!SLIDE vcenterH2
+
+## A practical example
+
+!SLIDE vcenterH2
+
+## Questions ?
+
+!SLIDE
+
+## Credits
+
+- Antoine Girbal 
antoine@10gen.com