Category Archives: Google App Engine

Google App Engine (GAE)

GAE: Billing

Quotas Una aplicación GAE puede consumir recursos hasta los limites que marcan las cuotas. Con estas cuotas , App Engine te asegura que tu aplicación no excederá tu presupuesta, y además que las otras aplicaciones que se estén ejecutando en App Engine no impactarán sobre el rendimiento de tu aplicación , ni la tuya impactará […]

GAE: Users service

App Engine applications can authenticate users who have Google Accounts, accounts on your own Google Apps domain, or OpenID identifiers. An application can detect whether the current user has signed in, and can redirect the user to a sign-in page to sign in or create a new account. While a user is signed in to […]

GAE : Objectify : Guia de usuario : Transacciones

Transactions are where Objectify departs most significantly from the patterns set by the Low-Level API and JDO/JPA. Objectify’s transactions are inspired by EJB and NDB transactions: Designed to allow modular, convenient transactional logic with a minimum of boilerplate. You should familiarize yourself with the GAE Transactions documentation. Basic Transactions A basic transaction looks like this: import static com.googlecode.objectify.ObjectifyService.ofy; […]

GAE : Objectify : Guia de usuario : Introducción

Introduction Introduction to Objectify Objectify is a Java data access API specifically designed for the Google App Engine datastore. It’s goals are to: Be easy to learn and understand. Support all native datastore features in an intuitive, human-friendly way. Model sophisticated, strongly-typed, polymorphic data structures. Enable modular, EJB-like transactional logic. Increase performance and decrease cost […]

GAE: Tutorial: Code Lab Exercise 2: Transactions, Memcache and Relationships

Goal This tutorial will demonstrate the following: Memory Cache using Google Memory Caching Service Handling Transactions Model the relationships across the entities This code lab is an extension to the previous code lab, adding transactions, caching & relationship management. This exercise builds on the previous product catalog, with entities Customer and Order added to demonstrate a sample […]

GAE: Tutorial: Code Lab Exercise 1: Working with Entities

Goal This tutorial guides you through the process of creating a sample application to perform CRUD operations on entities. These entities are stored and retrieved using the DataStore APIs from datastore defined by GAE. For this exercise we will build a sample product catalog with two entities: Product and Item. The application provides UI to perform […]