11.9 Bookmarking Challenges

• You must be extra cautious if your app relies on random number generation. Bookmarking will not generate the same results unless you make your process reproducible.

  • Suggested solution: repeatable() : returns a wrapped version of a random data function that always uses the same seed when called.
    
  • rnormA <- repeatable(rnorm)

• Be sure to give your tabs an id when using tabsetPanel()

• Be cautious of what you share. If your app requires sensitive information, use setBookmarkExclude() somewhere in the server to ensure that they do not get included in your bookmark.

  • setBookmarkExclude(c("secret1", "secret2"))

• If you use reactiveValues() to manually manage our reactive state, use onBookmark() instead of onBookmarked(). This will be discussed more in Ch.16 and more details can be found in Advanced Bookmarking

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