Avoid performing type introspection on known types

[elprans]

Type codec setup functions will no longer attempt to introspect the type
if it's one of the known builtin types.

Fixes: #1206
Fixes: #1138
Fixes: #1242

[antonmyronyuk]

Hi @elprans! Is it possible to release a new version with removal of introspection query?

Having some issues with stucked transactions (TYPE_BY_OID) on PostgreSQL under heavy load. This update should fix such cases as well.

Thank you in advance!

[elprans]

I'll get around to cutting a release this week at some point.

[sumersao]

Thank you @elprans. We're also experiencing this, so glad to see it was resolved already! Looking forward to the release 🙏🏾

[yyuliababenko]

Hi @elprans, waiting for the new release as well!

[alex-tolstov]

Hello @elprans ! Could you please promote a new release involving those bugfixes? We'd highly appreciate it!

[dmkulazhenko]

Hi @elprans! looking forward to release 🚀

[brandfocus]

@elprans Is a new release still planned?

For anyone looking to patch this in the interim, update your pyproject.toml to the following:

asyncpg = {git = "https://github.com/MagicStack/asyncpg.git", rev = "5c9986c4ae4e52a650b6592681ae9ea81ed2d70a"}