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Speed up PostgresConnection fetch() and iterate() - #193
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vmarkovtsev merged 2 commits intoMay 1, 2020
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April 26, 2020 19:33
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databases/backends/postgres.py
| typing.Mapping[typing.Any, typing.Tuple[int, TypeEngine]], | ||
| typing.Mapping[int, typing.Tuple[int, TypeEngine]], | ||
| typing.Mapping[str, typing.Tuple[int, TypeEngine]], | ||
| ]: |
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Okay. I'd be quite keen for us to document the return types here, maybe?
I realise that's not currently the case, but if we're touching this part of the codebase, then now might be a good time for us to improve that, since it's a really unclear area at the moment.
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@tomchristie How about now? I'd rather add the rest of the docs later. |
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lovelydinosaur
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Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
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Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
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Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
vmarkovtsev
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Oct 20, 2020
Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
vmarkovtsev
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Oct 20, 2020
Changelog: - Use backend native fetch_val() implementation when available (#132) - Replace psycopg2-binary with psycopg2 (#198) (#204) - Speed up PostgresConnection fetch() and iterate() (#193) - Access asyncpg Record field by key on raw query (#207) - Fix type hinting for sqlite backend (#227) - Allow setting min_size and max_size in postgres DSN (#210) - Add option pool_recycle in postgres DSN (#233) - Fix SQLAlchemy DDL statements (#226) - Make fetch_val call fetch_one for type conversion (#246) - Allow extra transaction options (#242) - Unquote username and password in DatabaseURL (#248)
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I noticed that the column maps in the Postgres abstraction can moved outside of the loop. According to the profiling results, this makes -25% less overhead on wrapping asyncpg.Record.