bk99.de entertain the web since 1997

bk99.de
RFC · Data formatsStandard explained

RFC 9535: JSONPath: Queries for JSON documents

Summary

RFC 9535 standardises JSONPath as a language for selecting values within nested JSON data. Standardised query languages improve portability between tools. Flexible paths need limits against expensive evaluation.

Ideas

  • Root and child segments navigate the document structure.
  • Wildcards select several elements.
  • Filter expressions narrow down results by conditions.

Remarks

  • RFC 9535 has the status “Proposed Standard”; current errata and successor documents should also be checked.

Recommendations

  • Limit input size and expression complexity for untrusted queries.
  • Test edge cases with arrays, missing values and Unicode.

References

Read the RFC at the RFC Editor

Search the Web Archive

RFC · 2002

RFC 3339: Timestamps for internet protocols

RFC 3339 defines an unambiguous profile based on ISO 8601 for date and time in internet protocols. Time data needs a shared syntax and still clear semantics. Machine readability does not prevent errors caused by wrong time zone assumptions.

RFC · 2026

RFC 10008: HTTP QUERY: Safe, idempotent queries with content

RFC 10008 defines the HTTP method QUERY for complex, safe and idempotent queries with request content. New methods close gaps when established semantics do not fit cleanly. Explicit semantics are better than misused POST requests.