talk in git for daniel

.gems

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+bluecloth
+nokogiri
+showoff
+gli

config.ru

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+require "showoff"
+run ShowOff.new

discussion/01_slide.md

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+!SLIDE
+
+# Things That Worked
+
+!SLIDE
+
+# Outside-In Administration
+* simplifies deploys
+* easily inspected
+
+!SLIDE
+
+# Simple Instances
+* off the shelf packages
+* predictable behaviour
+* low rate of change
+
+!SLIDE
+
+# Open Questions
+
+!SLIDE
+
+# Cloud computing resource suitability
+* IO performance
+* Uptime concerns
+
+!SLIDE
+
+# 

ec2/01_slide.md

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+!SLIDE
+
+# PostgreSQL, Web Apps, and EC2
+
+!SLIDE bullets incremental
+
+# Running 100,000 Apps At Once
+
+* 2000 free databases per server
+* plus dedicated databases
+
+!SLIDE bullets incremental
+
+# EC2
+
+* servers provisioned on demand
+* from 300mb of RAM to 68gb of RAM
+* sub-ms latency within EC2 zone
+
+!SLIDE bullets incremental
+
+# IO Performance on EBS
+
+* Not great
+* 8-volume mdadm raid
+* lvm2 on top
+* GNBD
+* see: http://orion.heroku.com/past/2009/7/29/io_performance_on_ebs/
+
+!SLIDE bullets incremental
+
+# Multi-tenant
+
+* Tried per-user schemas, not secure enough
+* Shared cluster allows high density
+* Shared cluster makes logging and introspection hard
+
+!SLIDE bullets incremental
+
+# Dedicated
+
+* challenging to monitor performance
+* constant monitoring
+* regular backups
+* secured ingress
+
+!SLIDE
+
+# Interesting Questions
+
+!SLIDE bullets incremental
+
+# What is my responsibility?
+
+* You create indexes...
+* I pick filesystems...
+* but I get paged at 3AM when you become nonresponsive.
+
+!SLIDE bullets incremental
+
+# How can I put more tools in your hands?
+
+* Fewer SIGHUP context GUC would be nice
+* Particularly logging
+* Host monitoring tools
+* CPU, IO, free memory, etc.
+* Requests welcome!
+
+!SLIDE
+
+# FIN
+# (demos!)
+# pvh@heroku.com
+

intro/01_slide.md

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+!SLIDE 
+# PostgreSQL-in-the-Cloud #
+## How to Run 97,283(ish) Ruby Apps At Once ##
+
+!SLIDE
+## Peter van Hardenberg ##
+### pvh@pvh.ca ###
+### Tech Lead, Department of Data ###
+## Heroku ##
+
+!SLIDE bullets incremental
+# Heroku #
+
+* Ruby host
+* PostgreSQL since day one
+* Local to SF
+* PaaS
+
+!SLIDE bullets incremental
+# PostgreSQL-in-the-Cloud #
+
+* The Dejargonizer
+* Cloud Service Architecture 101
+* Running PostgreSQL on EC2
+* Problems Outstanding
+

jargon/01_slide.md

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+!SLIDE
+
+# Cloud Jargon Demystified
+
+!SLIDE bullets incremental
+
+# Cloud
+
+* Someone else's computer
+* Usually virtualized resources
+* Available on demand
+* Pay as you go
+
+!SLIDE bullets incremental
+
+# *-as-a-service
+
+* Available on demand
+* Pay as you go
+* Somebody Else's Problem
+
+!SLIDE bullets incremental
+
+# Ruby-as-a-service
+
+* Read-only filesystem ...
+*  ... enforces scalability
+* Wide array off addons...
+*  ... rapid prototyping 
+
+!SLIDE bullets incremental
+
+# PostgreSQL-as-a-service
+
+* No superuser...
+*  ... enables managed backups and monitoring
+* Instant* provisioning
+* Convenient tooling
+
+

platform/01_slide.md

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+!SLIDE
+# Cloud Service Architecture
+
+!SLIDE bullets incremental
+
+# Cloud Computers
+
+* Computers are free...
+*  ... but running them is expensive.
+* You can have it now...
+*  ... but it may disappear.
+
+!SLIDE
+
+# Computer = Transistor
+
+!SLIDE center
+
+<img height="500" src="/image/platform/computer.jpg"/>
+
+!SLIDE
+
+# =
+
+!SLIDE center
+
+<img height="500" src="/image/platform/transistor.jpg"/>
+
+!SLIDE bullets incremental
+
+# Whaaa?
+
+* Don't try and fix a transistor.
+* If one transistor fails, throw it away.
+* If several transistors fail, fix the supply process.
+
+!SLIDE bullets incremental
+
+# Treat Servers like Transistors
+
+* Use a reliable method for creating them
+* Keep them simple
+* Replace them if something goes wrong
+
+!SLIDE bullets incremental
+
+# Deploys are Hard
+
+* O(n) worse than O(1)
+* Well understood, minimally unique servers
+* Heroku app for central control
+* Outside-in management of servers
+* None* of our code on the server
+
+!SLIDE
+
+# App Architecture
+
+<img height="500" src="/image/platform/architecture.png"/>
+
+

showoff.json

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+{ "name": "Postgres in the Cloud", 
+
+  "sections": [ 
+    {"section":"intro"},
+    {"section":"jargon"},
+    {"section":"platform"},
+    {"section":"ec2"}
+]}