Sunday, June 29, 2008

Google App Engine

One month after I started writing my first Google App Application I had reached more then 1000 Page View per one day!!!

One of the great advanatges of GAE over creating my own Web Server is that robutness of Google servers, My application is up 100% of the time, And after writing the application in correct way without consuming too much CPU per request and handling exceptions the application can be used anytime by the users.

The question is what would happen when GAE would support also Java, I realy don't know how I would be able to convert my application from Python to Java

Friday, June 13, 2008

Google App Engine Tips

  1. Often your application would work just fine locally but after deploying it the application won't work, a reason for that is that when running locally there is no CPU limit but on Google servers there is a CPU limit, My advice is to deploy your application at night this would enable you to test your application live without interfering the users
  2. Check your Logs frequently to see if your application throws exceptions to the user, You should strive to a point that no error logs would be displayed at all.
  3. To delete old entities you can access from "Application Overview" then choose "Data Viewer" and then select the entity click on the top check-box and then click the delete button, once there are no rows the entity would be removed.
  4. Don't upload an application if you havn't fully tested it before locally.

More tips would be posted in the next posts

Tuesday, June 3, 2008

My First Google App Engine Application

Ok, I finally succeed writing the Beta version of my Google App Engine application, This application translate from Hebrew Language to 15 other Langauges - Engish, Russian, Japanesse, Chinesse, Korean. The application use the datastore to hold the dictionary and also it auto-correct words which are misspelled, You can check the application at this url -

Deploying such application myself which would be both robutness and scalable can cost a lost of money, If buying servers and paying for high bandwith internet connection and maintaining the DB and using Load Balancer and so on, I think that it's worth it.


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