Just as I was bout to start this post, I saw Marco’s Entry “On Database Joins” where he quotes a tweet by @codinghorror on joins being super expensive and explains how Tumblr avoids them. Tech folks at our portfolio companies have probably all heard me say that “joins are evil” because they will make it really difficult for your service or site to scale past a certain level. Of course, once you start to program without joins, you pretty quickly demote your database engine to perform object (o...

Just as I was bout to start this post, I saw Marco’s Entry “On Database Joins” where he quotes a tweet by @codinghorror on joins being super expensive and explains how Tumblr avoids them. Tech folks at our portfolio companies have probably all heard me say that “joins are evil” because they will make it really difficult for your service or site to scale past a certain level. Of course, once you start to program without joins, you pretty quickly demote your database engine to perform object (o...