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Lucene In-Memory Search Example: Now updated for Lucene 3.0.1
Update: Here’s a link to some sample code for Python using PyLucene. Thanks, Joseph! While playing around with Lucene in my experiments to make it work with Google App Engine, I found an excellent...
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Introduction to working with App Engine’s low-level datastore API
App Engine’s Java SDK ships with three different mechanisms for persisting data: JPA – the javax.persistence.* package JDO – Java Data Objects The low-level API The formal documentation has got some...
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Using the Java Mapper Framework for App Engine
The recently released Mapper framework is the first part of App Engine’s mapreduce offering. In this post, we’ll be discussing some of the types of operations we can perform using this framework and...
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Google App Engine Tips and Tricks: Prebuilding Indexes using a non default...
(This’ll be a shorter post than usual.) Waiting for indexes to build can be drag; indexes need to be built before Entities even exist and can take longer than needed if the global index building...
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Issuing App Engine datastore queries with the Low-Level API
Last time, I wrote an introduction to using the low-level API for creating entities, setting keys, and getting keys by value. Basic queries and sorts These are useful when we know the keys, but its...
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Using the App Engine Mapper for bulk data import
Since my last post describing App Engine mapreduce, a new InputReader has been added to the Java project for reading from the Blobstore. Nick Johnson wrote a great demo where indexing was done via...
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GWT, Blobstore, the new high performance image serving API, and cute dogs on...
I’ve been working on an image sharing application using GWT and App Engine to familiarize myself with the newer aspects of GWT. The project and code are here: http://ikai-photoshare.appspot.com...
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App Engine datastore tip: monotonically increasing values are bad
When saving entities to App Engine’s datastore at a high write rate, avoid monotonically increasing values such as timestamps. Generally speaking, you don’t have to worry about this sort of thing until...
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Unit Testing in Tipfy, an App Engine framework in Python
I’ve been playing around with the Tipfy framework for App Engine. Tipfy is a framework built on top of App Engine’s APIs that provides many features on top of what is currently possible. I won’t go too...
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