Caching metadata for a database table

A system comprising:

• at least one processor;
• and
• a memory device including instructions, which when executed by the at least one processor, cause the at least one processor to perform operations comprising:
• caching, in connection with processing a first query, one or more table-metadata files in at least one of a current version set of one or more table-metadata files and a new version set of one or more table-metadata files, the new version set of one or more table-metadata files comprising table metadata for a new version of a database table;
• receiving a subsequent query directed to the database table;
• downloading, in connection with processing the subsequent query, at least one uncached table-metadata file in a scan set of table-metadata files for the subsequent query;
• and
• processing the subsequent query using the at least one uncached table-metadata file.

A non-transitory computer-readable medium comprising instructions, which when executed by at least one processor, cause the at least one processor to perform operations comprising:

• caching, in connection with processing a first query, one or more table-metadata files in at least one of a current version set of one or more table-metadata files and a new version set of one or more table-metadata files, the new version set of one or more table-metadata files comprising table metadata for a new version of a database table;
• receiving a subsequent query directed to the database table;
• downloading, in connection with processing the subsequent query, at least one uncached table-metadata file in a scan set of table-metadata files for the subsequent query;
• and
• processing the subsequent query using the at least one uncached table-metadata file.