1. Add an internal ttl table to contain document and field expiration information
   • there will be a thread local timestamp that we check the expiration times against
   • it will be updated when a batch of results is obtained from the pipeline
2. In our field related iterators check if a field is expired before returning the document as a possible result
   • In query and hybrid iterators it required adding a loop, we might need to consider handling timeout
   • note it will require a lot of fields being expired at roughly the same time
3. In our result processor check if the document itself was expired
4. This set of changes helps in the case of lazy expiration to some degree.
   • if the document/field expires between us retrieving it and opening it and retrieving its fields then the problematic edge case remains.
   • We will need a change at the redis level to be able to solve the problem 100%.

A clear and concise description of what the PR is solving, including:

1. Documents are expired during the query in a lazy fashion which causes empty documents to be returned to the user
   • For fields the issue is even trickier since we can return what the user perceive as incorrect results.
2. Try and minimize the edge case by checking for the expiration before returning a result up the chain
3. Less empty documents will be returned to the user.

Which issues this PR fixes

1. MOD-7329

Main objects this PR modified

1. Iterators relating to fields
2. Document Table

Mark if applicable

• This PR introduces API changes
• This PR introduces serialization changes