November 2018
Intermediate to advanced
652 pages
20h 56m
German
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Suchindizes aufbauen
Google hat ursprünglich mit MapReduce die Indizes für seine Suchmaschine aufgebaut, nämlich implementiert als Workflow von fünf bis zehn MapReduce-Jobs [1]. Obwohl Google später davon abgerückt ist, MapReduce für diesen Zweck einzusetzen [43], hilft es für das Verständnis von MapReduce, wenn man die Aufgabe betrachtet, einen Suchindex aufzubauen. (Auch heute ist Hadoop MapReduce weiterhin eine gute Methode, um Indizes für Lucene/Solr zu erstellen [44].)
Der Abschnitt »Volltextsuche und Fuzzy-Indizes« auf Seite 94 hat kurz gezeigt, wie ein Volltextsuchindex wie zum Beispiel Lucene funktioniert: Es handelt sich um eine Datei (das Begriffswörterbuch), in der man effizient nach einem bestimmten Schlüsselwort suchen kann und die ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.