Add ExpireAt to the iterator return result (#128)

Co-authored-by: laynexie <[email protected]>

Add atomic "Update" method (#117)

* Added atomic Update method

Co-authored-by: Patrick O'Reilly <[email protected]>

Consistent expiration check (#115)

update xxhash v2 (#105)

Signed-off-by: Weizhen Wang <[email protected]>

Add a SetAndGet method to return previous value when setting a new one (

#101)

fix evacuate count

add GetWithBuf method to avoid memory allocation

Merge pull request #35 from jb0n/master

fixes for various race conditions

support iterator