SETNX: Examples about locking contain a deprecated command (GETSET)

[cdelacruzpinto]

• The example about simple locking uses GETSET, which is supposed to be deprecated.
• According to the GETSET doc page, it can be replaced with "SET with the GET argument when migrating or writing new code". Maybe update the SETNX doc to do it this way if it's backwards compatible?

[itamarhaber]

Hi @cdelacruzpinto

Thanks for noting and reporting - you are very correct, and I think the that right resolution at this stage is to include both the current approach (i.e. SET ... GET) as well as the deprecated GETSET (for older versions).

Would you care to make a PR that addresses this?