Forex Tester: 2010

Limitele Google App Engine:
Google App Engine Limits
Aflati mai multe despre limitele App Engine:
Quotas
sau
GQL Query fetch limit
Incepand cu versiunea 1.3.1 nu mai sant fetching limits:
App Engine Sdk 1.3.1
Noutati incepand cu versiunea 1.4.0:
Google Upgrades its Cloud Platform
App Engine 1.4.0
"App Engine 1.4.0's improved task cue capability, meanwhile, expands the time that services like indexing and processing can be run. "You have a lot more leeway into running long-running tasks in the background," said Lynch. The previous limit of 30 seconds for background tasks has been expanded to 10 minutes. Also, the size of URLFetch requests, in which an application can request something like an image from another website, has been expanded from 1MB to 32MB."

SOA Webservices

The App Engine now has an option of running an application with low traffic as a high priority. Instances of the application will be kept running on three servers, even if it has no traffic, so that it will be instantly available if traffic materializes, rather than needing to be launched. The three instances also allow a hardware server to fail and still have a primary server and its backup available. The option is called the Always On feature and is priced at $9 per month.

Warm Up Requests is a feature of Always On. It anticipates a need for more instances of an application and loads them on servers before traffic needs to be sent to the additional servers. The feature is also available independently for any application through an App Engine XML command.