Google App Engine as a serverless platform for A2X...
Transcript of Google App Engine as a serverless platform for A2X...
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Serverless A2XGoogle App Engine as a serverless platform for A2X
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A2XEasy accounting for Amazon sellers
● monthly subscription SaaS app
● millions of orders from Amazon
● summarize and match data
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Scaling: 2 years on App Engine
● < 5 sellers
● $300,000/month
● 1000’s of orders
● > 5000 sellers
● > $1 Billion/year
● > Millions of orders
No Servers. No Databases.Same architecture and platform from day one.
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What is App Engine?
“If you write your app the way we tell you to, against our API’s, we promise it’ll scale really well on our platform”
- Google *
*not a real quote!
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What is App Engine?Design guidelines with App Engine
● Do all your work in the web layer
● Keep no state in the web layer
● Keep all the (user facing) requests short and lightweight
● Shift the heavy/slow work to the background (but still in the web layer)
● Keep result sets small
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How does App Engine fit in?
Bare-metal, colocation, dedicated
EC2, IaaS App Engine, Heroku, Beanstalk, PaaS
Lambda, FaaS
A bit less-serverless
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Is App Engine ‘Serverless’?
● JVM platform● Call a method● With some parameters● Abstract everything else
● Web app platform● Service a request● With some parameters● Abstract everything else
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Scaling is here
Web Request as the unit of work
Web App Container
Web App Container
Web App Container
... Web App Container
Datastore Cloud storage Memcache
Tasks
users/APIBackground processing
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What’s cool about App Engine
● Java, Go, PHP, Python● + other containers● Any GETs or POSTs ● i.e APIs, web apps, services● Scales for you● High throughput services:
Datastore, Task Queues
General Platform
● Fast prototyping● Local dev environment● Versions, deployment● traffic splitting● Unit testing tools● Environment monitoring,
logging, dashboard, billing
Developer Friendly
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Engineering: Fast Prototyping
...write some code...
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Engineering: versions, deployment
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Engineering: environments
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Engineering: Easy Profiling
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Monitoring: health
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Monitoring: budgets & costs
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The ‘catch’?● No state on the app server
● Request time/resource limits
● No threads (well, limited threads)
● Sandbox with whitelisted libraries - no low level APIs
● No filesystem (use cloud storage)
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And… Selling your soul to Google
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What’s next for App Engine?● Google has made a long term commitment to App Engine
● Java 8 is in beta on App Engine
● BigQuery to analyze 100’s of GB of raw source
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App Engine; fast start, easy scale up● + A fast easy way to get started
● + A smooth transition to growth, no need to re-architect
● + Clear path to scale up further within the same platform
● - Limits on what you can do on the platform
● - Tight lock-in to Google’s infrastructure
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Contact:a2xaccounting.com | @aschroder | [email protected]
Thank You!Questions, comments?
(ps: we’re hiring)