New defaults for the Provider Record Republish and Expiration (22h/48h)

[yiannisbot]

Checklist

• My issue is specific & actionable.
• I am not suggesting a protocol enhancement.
• I have searched on the issue tracker for my issue.

Description

We have carried out a detailed study on the Republish and Expiration intervals for Provider Records in IPFS. Our results suggest that:

• the Republish Interval can be increased to 22hrs (at least), and
• the Expiration Interval can be increased to 48hrs.

Increasing those values will reduce significantly (by ~100%) the overhead of content providers, as they now have to republish their records at a much lower frequency (every 22hrs, compared to every 12hrs).

You can read the detailed study here: https://github.com/protocol/network-measurements/blob/master/results/rfm17-provider-record-liveness.md

The changes have been implemented in the following PRs:

• Increase default republish interval: feat: increase default Reprovider.Interval #9326
• Increase expiration time: feat: increase expiration time for Provider Records to 48h (RFM17) libp2p/go-libp2p-kad-dht#793
• Increase the max record age for the PUT_VALUE: feat: increase the max record age to 48h (PUT_VALUE, RFM17) libp2p/go-libp2p-kad-dht#794

The relevant libp2p specs have also been updated in this spec PR: libp2p/specs#451

cc: @cortze

[lidel]

quick status update (cc @BigLep):

• Republish (reprovide interval in kubo) is merged: feat: increase default Reprovider.Interval #9326
• Expiration interval bump in feat: increase expiration time for Provider Records to 48h (RFM17) libp2p/go-libp2p-kad-dht#793 and feat: increase the max record age to 48h (PUT_VALUE, RFM17) libp2p/go-libp2p-kad-dht#794 is waiting for review and new go-libp2p release
  • when done, we need to switch kubo to release with the above

[lidel]

Released remaining work with https://github.com/libp2p/go-libp2p-kad-dht/releases/tag/v0.20.0 and opened PR to bubble this up to Kubo: #9491

[BigLep]

@lidel : I'm closing because of 3a3a971 . Please reopen if there is remaining work.