Re: [Haskell-cafe] Optimizing performance problems with Aeson rendering large Text arrays

On 02/01/2013 01:44 PM, Bas van Dijk wrote:

If I make a special case for text based UUIDs in aeson:

data Value = ... | UUID Text | ...

Data.Aeson.Encode.fromValue (UUID s) = singleton '"' <> fromText s <> singleton '"'

Then encoding time improves by 20%.

So a big part of the time is spent encoding the UUID strings.

Bas

This might work, but it doesn't seem to be something I could actually distribute, unless I shipped modified Aeson source code... the String fromValue pattern seems to do a lot of escaping which won't apply to my UUIDs, but I'm not sure what the right solution to that is. - Ocharles