ipns publish: lower the default TTL

[lidel]

Checklist

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

Description

Never-ending complains about IPNS being slow usually boil down to the implicit default of --ttl in ipfs name publish RPC being set to 1h.

It may not be the best default for Kubo and also not the best recommendation in Specs (https://specs.ipfs.tech/ipns/ipns-record/)

We may look into the default setting big DNS providers have (afaik Cloudflare uses 5 minutes for the same reason – a tradeoff between caching and user complaints due to slow propagation), and change spec recommendation and Kubo default to more pragmatic value.

Ref.

• https://discuss.ipfs.tech/t/ipns-best-setting-for-fast-update/18103/3?u=lidel
• https://discuss.ipfs.tech/t/ipfs-name-resolve-does-not-always-return-the-freshest-cid-for-ipns-on-kubo-0-20-0/16624/9?u=lidel

TODO

• ipns: lower the suggested default TTL specs#492
• chore(ipns): lower DefaultRecordTTL to 5m boxo#859

[2color]

Never-ending complains about IPNS being slow usually boil down to the implicit default of --ttl in ipfs name publish RPC being set to 1h.

What exactly do you mean by IPNS being slow in this context? Slow propagation of changes? or Slow to resolve?

IIUC, you're referring to users that can't see their newly published IPNS record propagated, because nodes aren't looking up the new record due to the one hour TTL?

[lidel]

Yes. In my subjective experience, virtually every "ipns is slow" argument I've heard in past 5 years ended up being TTL-related, upon closer inspection. TTL was set to default 1h, or raised to 24h, I've even seen someone setting validity and TTL to a year, and then complaining "IPNS is broken". All those issues went away when TTL was lowered.

Filled related ipfs/ipfs-docs#2002

[lidel]

Triage note:

• ipns.DefaultRecordTTL lives in boxo/ipns, so we need chore(ipns): lower DefaultRecordTTL to 5m boxo#859
• updating spec suggestion as well: ipns: lower the suggested default TTL specs#492