Tym razem okrągły dump, bo #30. 

• https://dennylesmana.medium.com/what-is-database-caching-ceebe57de9ba
• https://brandur.org/fragments/postgres-table-rename
• https://dmarc.postmarkapp.com/
• https://www.postgresql.org/docs/current/sql-merge.html
• https://mailcatcher.me/
• https://github.com/mailhog/MailHog
• https://codeception.com/12-15-2013/testing-emails-in-php.html
• https://tria.ge/login
• https://jolicode.com/blog/how-to-dynamically-validate-some-data-with-symfony-validator
• https://archiv.pehapkari.cz/blog/2017/02/24/symfony-validator-dynamic-constraints/
• https://austingil.com/automatically-deploy-from-git/
• https://chenhuijing.com/blog/understanding-browser-cookies/
• https://wcedmisten.fyi/post/self-hosting-osm/
• https://www.crunchydata.com/blog/postgres-query-boost-using-any-instead-of-in
• https://www.postgresql.org/docs/current/sql-merge.html
• https://cachethq.io/
• https://dencode.com/
• https://hazelweakly.me/blog/scaling-mastodon/