Category Archives: Database

The right tool – neo4j?

Posted on May 6, 2011 by Toke Eskildsen

Background We use a backing storage for documents in our home brewed search system Summa. It was supposed to be a trivial key-value store with document-IDs resolving to documents. Then an evil librarian pointed out that books are related to … Continue reading →

Posted in Database, eskildsen, Hacking, Low-level, Summa | 2 Comments

Juglr, Higgla, and DidYouMean

Posted on February 10, 2010 by kamstrup

A productive day today! Summa DidYouMean Henrik and I sat down and pushed a preliminary did-you-mean service to Summa trunk. It’s to be considered pre-alpha quality at this stage, but it will be mature for Summa 1.5.2. It’s based on … Continue reading →

Posted in Database, Hacking, kamstrup, Lucene, open source, Summa | Tagged , , , , , , , | Leave a comment

Efficient sorting and iteration on large databases

Posted on June 15, 2009 by kamstrup

Before you read on, heed my words that this post might be a wee bit technical… If not extremely technical – caveat emptor The Problem In our continuous quest for a blazingly fast Summa, we ran into a performance problem … Continue reading →

Posted in Database, kamstrup, Summa | Tagged , , , , , | 3 Comments

Adventures in the land of databases

Posted on March 4, 2009 by kamstrup

The tale of three databases In the olden days Summa used a Postgresql database as a backend for its caching/presentation engine, also called the Storage. Postgresql served us well – good performance and good reliability. The one drawback was that … Continue reading →

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