Duck Cloud Blog
Tutorials, SEO-friendly explainers, and step-by-step articles that link directly to the tools they describe.
Software Engineering
Keep push subscriptions, account associations and preferences consistent across logout, endpoint changes and failed delivery without assuming permanence.
Oct 18, 2026
Read nowSecurity
Review DPoP integrations with owned test clients, checking token-key binding, request matching, replay handling and proxy boundaries without inventing crypto.
Oct 18, 2026
Read nowSoftware Engineering
Understand why ignore rules do not untrack existing files, inspect the index safely, and verify a reviewed removal without confusing it with secret revocation.
Oct 18, 2026
Read nowInfrastructure
Test whether concurrent misses for one cache key share a fill, then review wait limits, failures and cache-key isolation before enabling request coalescing.
Oct 18, 2026
Read nowInfrastructure
Check client protocol offers, TLS termination and proxy-to-origin behavior when HTTPS succeeds but the expected HTTP/2 connection is not actually negotiated.
Oct 18, 2026
Read nowInfrastructure
Investigate a new DNS name that still returns NXDOMAIN by comparing authoritative answers, recursive negative responses and their remaining cache lifetime.
Oct 18, 2026
Read nowSoftware Engineering
Test font subsets against real language content, dynamic text and fallback layout; distinguish CSS unicode-range declarations from the glyphs inside font files.
Oct 18, 2026
Read nowSoftware Engineering
Define decimal inputs, currency scale, rounding mode and rounding stage in money APIs, then test totals and refunds against an explicit calculation contract.
Oct 18, 2026
Read nowSecurity
Verify supplier bank changes through a trusted channel, separate approval from payment, and retain evidence without trusting the request thread alone.
Oct 18, 2026
Read nowTechnology Business
Separate invoice corrections, customer credits and actual refunds, then reconcile each to the original transaction without issuing the same adjustment twice.
Oct 18, 2026
Read nowTechnology Business
Build a useful weighted sales forecast with consistent amounts, evidenced stages and close dates while keeping pipeline, signed commitments and cash separate.
Oct 18, 2026
Read nowTechnology Business
Read solar and electricity comparisons by checking MW versus MWh, reporting period, geography and measurement boundaries before interpreting a headline ranking.
Oct 18, 2026
Read now