Duck Cloud Blog
Tutorials, SEO-friendly explainers, and step-by-step articles that link directly to the tools they describe.
Data Engineering
Read PostgreSQL EXPLAIN plans with row estimates, filters, buffers, and workload context so you can diagnose slow queries before adding unnecessary indexes.
Oct 3, 2026
Read nowData Engineering
Build PostgreSQL full-text search with language configuration, an index, permission filters, and relevance tests before adding a separate search service.
Oct 3, 2026
Read nowData Engineering
Choose SQLite or PostgreSQL by deployment shape, write concurrency, operational needs, and recovery rather than assuming every startup needs the same database.
Oct 3, 2026
Read nowData Engineering
Prevent SQL injection with bound parameters, allowlisted sort fields, least-privilege database access, and tests that separate query structure from user input.
Oct 3, 2026
Read nowWeb Infrastructure
Understand DMARC alignment, inventory legitimate senders, and move toward enforcement with evidence so spoofing defence does not disrupt business email.
Oct 3, 2026
Read nowWeb Infrastructure
Diagnose DNSSEC SERVFAIL after a nameserver change by checking validation, registrar DS records, and authoritative keys rather than blaming propagation.
Oct 3, 2026
Read nowWeb Infrastructure
Troubleshoot Cloudflare error 525 by checking origin TLS, certificate presentation, SNI, and server logs without weakening encryption to hide the failure.
Oct 3, 2026
Read nowWeb Infrastructure
Find dangling DNS records, confirm resource ownership, and coordinate service retirement so abandoned subdomains do not become an avoidable takeover risk.
Oct 3, 2026
Read nowSecurity Defence
Check unexpected QR codes and chat links without trusting the sender name, scanning blindly, or entering credentials before independently verifying the request.
Oct 3, 2026
Read nowSecurity Defence
Reduce session cookie theft risk with secure browser habits, scoped cookies, session rotation, and verified revocation rather than relying on passwords alone.
Oct 3, 2026
Read nowSecurity Defence
Understand device code phishing, spot unexpected sign-in requests, and review identity controls without assuming a genuine login page makes a request safe.
Oct 3, 2026
Read nowDeveloper Workflows
Design workflow checkpoints with explicit stages, verified outputs, leases, and recovery tests so long-running jobs can resume safely after interruption.
Oct 3, 2026
Read now