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Editorial Team
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Asked: 2026-05-31T09:16:02+00:00

I want to use RestKit to parse XML data from our servers. Downloading and

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I want to use RestKit to parse XML data from our servers. Downloading and parsing takes 2-3 seconds with our current approach using TBXML. However, when I now download and parse the same XML using RestKit + CoreData it takes ~ 10 seconds. Which is way too much in our case since it would drastically affect the end user experience.

The XML has a size of 1.3 MB and I convert the XML to two entities with the following attributes:

Parent:

  • 3 string attributes
  • 1 Integer32 attribute

Nested Object:

  • 2 date attributes (With a custom Date formatter assigned to the mapping: yyyy-MM-dd HH:mm:ss'Z')
  • 2 string attributes

Is there a way with which I could boost the performance of my setup and is the trade-off of CoreData quite big so that it might make sense to only use RestKit without CoreData.

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1 Answer

  1. Editorial Team

    You are comparing apples to oranges. Downloading and parsing with TBXML is doing significantly less than RestKit + CoreData, which is downloading, parsing, dynamically mapping to objects and storing to CoreData.

    This article gives a good overview of the performance characteristics of various XML parsers running on iOS devices. TBXML is the fastest, with libxml2 DOM parsing about 20% slower.

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