Tag
conditional-requests
- Nov 6, 2025 Safety and Idempotence in HTTP Method Semantics What each method promises about side effects, how caches and retrying intermediaries use those promises, and where real endpoints quietly break them. backend systems
- Feb 25, 2023 Conditional Requests: Entity Tags, Dates, and Preconditions How If-None-Match and If-Modified-Since turn a full response into 304, how strong and weak validators differ, and why the precondition order is fixed. internet protocols