Crossref shifts DOI redirect strategy from 303 to the more common 302, indicating a shift in best practices.
Crossref has decided to change the HTTP redirect code used by our DOIs from 303 back to the more commonly used 302. Our implementation of 303 redirects back in 2010 was based on recommended best practice for supporting linked data identifiers. Unfortunately, very few other parties have adopted this practice.
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Bilder et al. (2018) studied this question.
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