BANCO DE DADOS | FUNDAMENTOS PARA VIBE CODERS #2
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Aula 2 dos Fundamentos pra Vibe Coders: banco de dados. É no banco que o teu app vibecodado te dá prejuízo de verdade, porque é ali que a conta explode e é ali que o dado vaza. E quase tudo se resolve com o básico que o próprio banco já faz, só que a IA não faz sozinha: você tem que pedir pelo nome.
Nessa aula: qual banco usar (Postgres, MongoDB, Supabase, Firebase), chave primária e estrangeira, constraints, transação, o índice que a IA esquece (testei com 5 milhões de pedidos e uma linha de SQL derrubou a consulta de 58 ms pra 0,37 ms), a conta de US$ 72 mil no Firestore, os 16.326 bancos Supabase abertos, migrations, dev x produção e backup que volta de verdade.
📚 Apostila grátis com os 7 prompts e o teste do capítulo 4 no Substack: https://manodeyvin.com.br
Aula 1 dos Fundamentos pra Vibe Coders: https://www.youtube.com/watch?v=G8SeOH0qerk
⏱️ Capítulos
00:00 Abertura
02:07 01 · Qual banco usar
06:25 02 · Modelagem e constraints
11:46 03 · Transação
15:50 04 · A linha que falta
21:28 05 · Susto no final do mês
24:10 06 · A porta aberta
26:37 07 · Migrations e ambientes
28:48 08 · Backup que volta
30:37 A ordem que eu rodaria
📰 Fontes
PostgreSQL wiki, Don't Do This: https://wiki.postgresql.org/wiki/Don%27t_Do_This
PostgreSQL, Constraints: https://www.postgresql.org/docs/current/ddl-constraints.html
Hostinger VPS: https://www.hostinger.com/br/vps
Milkie Way e os 116 bilhões de leituras (The Register): https://www.theregister.com/2020/12/10/google_cloud_over_run/
Firebase, evitar contas surpresa: https://firebase.google.com/docs/projects/billing/avoid-surprise-bills
Firestore, preços: https://firebase.google.com/docs/firestore/pricing
UpGuard, bancos Supabase expostos: https://www.upguard.com/blog/everything-everywhere-systemic-data-exposure-in-supabase-apps
Moltbook (Wiz): https://www.wiz.io/blog/exposed-moltbook-database-reveals-millions-of-api-keys
FIESP (Tecnoblog): https://tecnoblog.net/noticias/fiesp-expoe-dados-pessoais/
Supabase, mudança de grant em tabela nova: https://supabase.com/changelog/45329-breaking-change-tables-not-exposed-to-data-and-graphql-api-automatically
GitLab, postmortem: https://about.gitlab.com/blog/postmortem-of-database-outage-of-january-31/
GitLab, relatório do incidente: https://about.gitlab.com/2017/02/01/gitlab-dot-com-database-incident/
Membros: https://www.youtube.com/channel/UC1VZDEtGNxfQzh7EYcD2frg/join
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Canal de cortes: https://www.youtube.com/@cortesdomanoofc
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