If you want to compare Redis and PostgreSQL as a cache, be sure to measure an unlogged table, as suggested in the article. Much of the slowness of PostgreSQL is

If you want to compare Redis and PostgreSQL as a cache, be sure to measure an unlogged table, as suggested in the article. Much of the slowness of PostgreSQL is to ensure durability and consistency after a crash. If that isn't a concern, disable it. Unlogged tables are automatically truncated after a crash.