Caching

[peacekeeper]

How should resolution results be cached?

This could be influenced by:

• Default settings by community consensus and recommendations of the IND WG.
• Custom configuration by the UR administrator.
• Request parameters by a UR user (e.g. to override defaults and force a fresh non-cached lookup).
• Settings associated with the identifier (e.g. TTL setting in the DID document or BNS zone file).

How should the cache be implemented? The UR could cache results in memory, or use a shared caching mechanism such as Blockstack's Atlas peer network.

[peacekeeper]

We revisited this on the 23 Jun 2021 Universal Resolver call and decided that this is still relevant and we should work on it at some point.

[peacekeeper]

We discussed this on the 29 Sep 2021 Universal Resolver work item call. Some ideas here are relevant to a concrete implementation, while others would fit better into specifications (e.g. DID Core, DID Resolution). This issue should probably be broken up into smaller issues in the appropriate places.