Introduction In this article, I’m going to explain you should use compact table columns when designing your database schema. By using compact table columns, you can cache more table records and index entries and, therefore, speed up your SQL queries. Database caching As I explained in this article, relational database systems cache the pages that are loaded from the disk in the Buffer Pool (e.g., shared buffers in PostgreSQL) so that the next time the same page is requested by an SQL query execution, the page will be served from the memory... Read More
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