May 2012
Intermediate to advanced
200 pages
3h 39m
German
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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.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.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.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.
Dokumente löschen
Da CouchDB Änderungen immer an den B-Tree anhängt, gilt das auch für das Löschen von Dokumenten. Die Löschung eines Dokuments führt also nicht zum Entfernen des Dokuments, sondern überführt es in einen Zustand. Bei der nächsten Compaction wird es dann aber endgültig aus dem B-Tree entfernt. Das gilt übrigens auch für Replikationen. Um ein Dokument zu löschen, führen Sie eine DELETE-Operation auf die betreffende Dokument-URL aus. Als Parameter müssen Sie dabei die aktuelle RevisionID übergeben. Im Erfolgsfall gibt der Server die neue RevisionID des gelöschten Dokuments zurück.
DELETE /dbname/doc_id?rev=RevisionID
Alternativ zum Parameter rev können Sie auch den ETag-Header mit einer »If-Match«-Anweisung verwenden. Das folgende Beispiel ...
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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.