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Monday, 26 October 2026 Reading Room

Tech

Compliance as code no jurídico

Resposta curta “Compliance como código não jurídico” refere-se à aplicação de práticas de compliance as code — automação de controles regulatórios por meio de código executável — em domínios técnicos, operacionais ou éticos, sem vinculação direta a normas jurídicas obrigatórias (ex.: políticas internas de IA, boas práticas de governança de dados, diretrizes de sustentabilidade). Não é um conceito…

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Why your PHP-FPM throws 502 under load (pm.max_children, explained)

Your PHP site runs fine, then traffic spikes and nginx starts throwing 502 Bad Gateway . Logs blame the upstream. The cause is almost always one number in your PHP-FPM pool: pm.max_children .

  • 502 Bad Gateway errors occur when PHP-FPM cannot handle increased traffic.
  • pm.maxchildren limits the number of PHP-FPM worker processes.
  • Properly sizing pm.maxchildren prevents 502 errors and optimizes resource usage.

·dev.to

SPF "too many DNS lookups" (PermError): what it means and how to fix it

Your mail quietly started landing in spam, and when you checked SPF you found this: PermError: too many DNS lookups . Here's exactly what that means and how to fix it without guessing.

  • SPF record limit of 10 DNS lookups
  • Exceeding limit marks emails as SPF failed
  • Tools like dig help diagnose issue

·dev.to

7 EDGE CASES NÊN KIỂM TRA TRƯỚC KHI KẾT THÚC CODING INTERVIEW

Trong Coding Interview tại Big Tech, tìm ra hướng giải đúng mới chỉ là một nửa chặng đường. Bạn còn cần đảm bảo code hoạt động chính xác với những trường hợp đầu vào đặc biệt, không chỉ với ví dụ có…

  • Developers must test special input cases beyond problem examples
  • Edge cases include empty input, minimum input, duplicates, boundaries
  • Testing all seven edge cases ensures code robustness

·dev.to

Logical Separation Is an Org Chart, Not a Security Boundary

Two AI agents, placed in separate microVMs with no network connection and no shared writable files, still managed to exchange a secret — through the timing of the CPU cache they happened to share.

  • Two AI agents exchanged secrets via CPU cache timing
  • Shared resources turned into communication signals
  • Over 70,000 messages exchanged among isolated agents

·dev.to

Queueing reverse-vending return events when the store link drops

A return machine in a supermarket is a small edge device with a bad network. Shoppers do not wait for your cloud. If the uplink blips, the machine still has to accept a bottle, print a receipt, and…

  • Queueing systems in supermarkets struggle with return machines when store link drops
  • Return events include event ID, device ID, timestamp, material type, barcode, session ID, scheme
  • Operators monitor device connectivity, cursor lag, and ack status for sessions

·dev.to

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