Duck Cloud Blog
Tutorials, SEO-friendly explainers, and step-by-step articles that link directly to the tools they describe.
Web Platform
Set predictable download filenames with Content-Disposition, handle international names correctly and keep user-provided paths out of response headers.
Oct 6, 2026
Read nowEngineering Performance
Use Server-Timing to expose useful backend durations, separate network and application costs, and avoid leaking internal topology through performance headers.
Oct 6, 2026
Read nowData Engineering
Handle RFC 3339 timestamps with explicit precision and offset rules, compare instants correctly and prevent lexical sorting from corrupting event order.
Oct 6, 2026
Read nowData Engineering
Choose raw-byte signing or a defined JSON canonicalization scheme, reject ambiguous data and test interoperability before generating hashes or signatures.
Oct 6, 2026
Read nowWeb Platform
Handle duplicate URL query parameters consistently across proxies, signatures and application code, with explicit rules for repeated filters and scalar fields.
Oct 6, 2026
Read nowEngineering Performance
Control metric cardinality with bounded labels, route templates and per-metric budgets, while moving user-specific detail into appropriately protected logs.
Oct 6, 2026
Read nowEngineering Performance
Trace missing distributed spans by checking traceparent propagation, proxy boundaries and sampling decisions without treating trace IDs as authentication.
Oct 6, 2026
Read nowEngineering Performance
Design Python microbenchmarks with repeatable inputs, controlled setup, realistic workloads and honest timing reports before choosing a faster implementation.
Oct 6, 2026
Read nowData Engineering
Distinguish absent values from floating-point NaN in Polars, test filtering and replacement rules, and preserve meaningful zero values in data pipelines.
Oct 6, 2026
Read nowData Engineering
Use Polars lazy CSV scans to inspect query plans, select columns early and validate results before treating a faster data pipeline as a correct one.
Oct 6, 2026
Read nowSecurity Operations
Secure push publishing with scoped sender access, recipient authorization, token lifecycle controls and a release check that prevents accidental mass sends.
Oct 6, 2026
Read nowSecurity Operations
Review hidden and visible mailbox forwarding after account compromise, preserve evidence and confirm recovery beyond a password change or successful login.
Oct 6, 2026
Read now