Ruby on Rails

On 21 April 2016 at 23:21, Meenakshi Sharma <meenakshi8@gmail.com> wrote:
> Hi all,
>
> I am running into 'concurrent POST requests' issue in the application that I
> would like to handle.
> It's resulting in duplicate entries in database for columns with indexes.
>
> I am thinking of adding unique constraint to the table columns (with index)
> and handle resulting database errors in the application.

If you have a uniqueness validation then you should always also
enforce that in the database, for exactly the reason you describe.
See
http://guides.rubyonrails.org/active_record_validations.html#uniqueness

Colin

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