Liveblogging Google App Engine release at Campfire One at Google

Liveblogging on Twitter at http://twitter.com/natekoechley

everything in this article is my paraphrasing of speakers’ presentations. not my own words.

(Video coming soon.)

1. We run web applications. We’re only focused on this narrow goal.
2. We handle the entire lifecycle of an app.
3. Apps are run on Google infrastructure.

“It’s hard, but it’s worth it for us.”

“For the first time you can use the same infra we use…Auth, GOS, BigTable”

The Stack

1. Scalable serving infra
2. python runtime
3. SDK
4. Web based admin console
5. DataStore

Demo: App from scratch in 8 minutes.

More details

1. Scalable Serving Infrastructure: fault tolerant (redundant). Fluid: don’t need to schedule needs up front… more servers come online dynamically.
2. Python Runtime and Libraries. All tools are generic, so new languages can be dropped in later. Python used in same python available otherwise. Goal: you can use any language eventually. We don’t want to limit you.
3. SDK: Environment to develop apps locally. Avail for Linux, Mac, Windows today. (But can probably work anywhere.)
4. Admin Console: web-based admin console. (Looks like google finance meets google analytics.) Tools for request logs. Data explorer. Usage/quote numbers. App-version balancing. Can hook up domain (don’t need to run at *.appspot.com).
5. Scalable Datastore. Schemaless object store. Not a clustered sql thing. Instead based on BigTable. (Whitepapers online.) Horizontally scalable. Reacts to hotspots. BigTable instead of SQL is a big change, and may take some time to get used to. But we think you’ll come to like it. Schemaless means you can add a new datatype or entity whenever - no need to update your schema.

Now we’re looking at a Datastore Model Class.

GQL Query example

SELECT *
FROM Story
WHERE title = 'App Engine Launch'
AND author = :current_user
AND rating >= 10
ORDER BY rating, created DESC

Other Notes

Mail Sending API

no setup needed.

Make HTTP Requests

Authenticate with Google Accounts

Frameworks

The whole Django framework.

Guido van Rossum: Creator of Python and member of Google App Engine team

My passion is making life easier for developers. With python i’ve done that for decades. Now i’ve joined GAE team. Excited by potential. (and that python was first picked)

First time that GOogle has let third-party people run software on their infra. That’s fundamentally a big deal.

8:13 PM “We’re offing 100% of the python lang.”

8:14 PM - we don’t offer threads, but you won’t been it because of our scalable arch.

GAE uses a quota system so nobody monopolizes the infra.

me: if it’s so scalable, why do they need the quotes?

What’s Next?

• large upload/download support
• purchase additional capacity
• other language support
• offline processing.