http://i3xi5qxvbrngh3g6o7czwjfxwjzigook7zxzjmgwg5b7xnjcn5hzciad.onion/proposals/226-bridgedb-database-improvements.html
This idea should
be further explored to assess the safety and potential drawbacks to
removing old data.
If there is data which SHOULD expire, the PEXPIREAT command provided by
Redis for the key datatype would allow the RDBMS itself to handle cleanup
of stale data automatically. [16]
**** 4.