What Exactly is Google App Engine?• Google PaaS for building web applications in Cloud.• No Server Maintenance, Auto-scaling, No Database Management (uses BigTable)• Free Quota- 1GB Storage, 10 Apps per User.• SDK for development, ease Deployment.• Easy to Start.
App Engine Services• Data Store- BigTable- Scalable Read/Write.• MemCache- Shared amoung your instances.• Google Accounts- Login and Logout purpose.
App Engine Restrictions• Read only access to file system.• Pure Python based web servers.• Application can not create new threads.• 10 MB request and response size limit.• 1000 results max per datastore query.• 30 sec deadline for every request/response.
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