I think his hostility comes from the fact that if you google just &quot;postgresql json&quot; the second hit is the official documentation that goes over jsonb right in the second paragraph.<p><a href="http:&#x2F;&#x2F;www.postgresql.org&#x2F;docs&#x2F;9.4&#x2F;static&#x2F;datatype-json.html" rel="nofollow">http:&#x2F;&#x2F;www.postgresql.org&#x2F;docs&#x2F;9.4&#x2F;static&#x2F;datatype-json.html</a><p>You can also see that the very first link outside of the official documentation:<p><a href="https:&#x2F;&#x2F;www.compose.io&#x2F;articles&#x2F;is-postgresql-your-next-json-database&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.compose.io&#x2F;articles&#x2F;is-postgresql-your-next-json...</a><p>Explains the benefits of jsonb and how to use indexes.<p>If you&#x27;re going to include a database, at the very least do 20 minutes of research on it.  If that can&#x27;t be given, then just don&#x27;t include something.<p>That&#x27;s like saying &quot;I&#x27;ve just installed MongoDB and read the intro documentation page, I&#x27;m now going to benchmark it against a MySQL cluster, which I have years of experience with, and that I helped develop.&quot; (E.g.: they developed ArangoDB, so they should be experts in at least that, right?)