Incorporate Collections into Name module.

[Taztingo]

Summary

The collections package has been added to cosmos sdk v0.50, and we should see if we can leverage this. This package will help improve clarity and may improve performance of our storage usage. A simple module that we can easily integrate this into and use for gathering metrics is the name module.

Problem Definition

The current way that we use state is quite cumbersome and it may not be optimal.

Proposal

The following steps are one of many ways to implement this and can be followed loosely to incorporate this into the name module:

• Create a codec for Record message
• Update the prefixes to use collections.Prefix.
• Store the params as an Item
• Store the name as a Map<String, Record>
• Store the addresses with as a Map<Pair<Addr, String>, Record>
• Update pagination queries to use collections.Paginate

Some useful metrics to gather, compare, and discuss are:

• Gas usage when adding, removing, and editing entries
• Runtime performance under different loads

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