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Sequential or Random Access usage:
The ARC/WARC reader /GZip readers can be used to read either all the records/entries in a file sequentially or select records/entries in random order.
Both scenarios are supported by the various factory and reader methods.
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The ARC/WARC factory and reader methods support both compressed and uncompressed files in varying combinations.
Basicly Basically you can create a reader for compressed or uncompressed files, but the factory also includes an auto-detection mechanism which can determine the correct reader on a per file basis.
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